Category Archives: on-farm research

JenREES 3/7/21

Farm Bill ARC-IC: Unless one has a field that tends to get hit with lower yields compared to county average every year, I’m unsure that ARC-IC is a fit for many farmers in this part of the State. For the 2021 decision, one would need to expect 2021 yield to be significantly less than county average yields. So if your field(s) are typically near or above county average yields, it’s perhaps not the wisest decision.

Lawn Care: The beautiful weather is a great opportunity to rake lawns, remove leaves from lawns, and dormant overseed grass in thin spots. Dormant seeding provides an opportunity for seed to grow when soil temperatures warm and spring rains come. Prepare areas to overseed by hand raking small areas to remove dead growth and loosen the soil surface. Large areas can be heavily aerated. It’s best to only power rake if there’s a thatch layer of ½” or more present. Overseed Kentucky bluegrass at 1-2 lbs/1000 square feet and tall fescue at 4-6 lbs/1000 square feet. Also, it’s too early to apply fertilizer and herbicides to lawns.

Solar Electric Questions: Will share more regarding a free webinar series next week to be held from Mar. 30-Apr. 8. If you have specific solar-related questions right now, please direct them to John Hay, Nebraska Extension Educator at 402-472-0408 or jhay2@unl.edu.

Nitrogen Rate and Timing Studies: An article written by Dr. Charlie Wortmann and colleagues shared, “Partial Factor Productivity (PFP) is commonly expressed as yield per unit input, e.g. bushels of corn per pound of fertilizer N applied (bu/lb N). PFP can be adapted to units of nutrient removed in grain harvest to units of nutrient applied, such as corn N harvested relative to fertilizer N applied (PFPN, lb/lb).” Advances in corn genetics and changes in farmers’ management practices have resulted in more pounds of grain produced for every pound of nitrogen applied. Dr. Richard Ferguson shared, “The average PFP of fertilizer N for corn in Nebraska was estimated to average 1.16 bu/lb N in 2012 compared to 0.57 bu/lb N in 1965. This represents a doubling in PFP for fertilizer N applied to corn. The trend of increase was linear from 1965 to 2012. Assuming a grain N concentration of 1.2% at 84.5% dry wt. or 0.67 lb N/bu, the PFPN converts to 0.79 lb of grain N per lb of fertilizer N applied in 2012 compared with 0.38 lb/lb in 1965.” That’s quite an increase in nitrogen use efficiency!

Another way farmers have been looking to increase nitrogen use efficiency is to compare nitrogen rates and timing of the fertilizer applications. We’ve had some on-farm research studies recently look at sidedress applications using either the UNL equation/Maize N model or industry models such as Climate Field View and Granular. In all these studies, the recommended rate was compared to rates that were at least 30 or 50 pounds over and under the recommended rate. In 2020, there were two nitrogen rate and timing studies in the area partially sponsored by the UBBNRD. A York County study found no yield differences between applications of spring anhydrous of 135, 185, and 235 lbs/ac. The same farmer also did a nitrogen rate X timing study in Hamilton County. He compared Fall vs. Spring vs. Split application rates of anhydrous + UAN of 205 vs. 255 lb/ac for each timing. There were no yield differences with any of the timings and rates. Take homes: In none of the studies did the addition of 30-50 lbs N/ac above the recommended rate increase the yield statistically. A few of these studies also compared side-dress applications vs. pre-plant alone. One situation resulted in a statistically lower yield with pre-plant alone while the others resulted in no yield differences. I’ve compiled these results in a table at http://jenreesources.com.

These nitrogen rate and timing studies could provide farmers a way to assess for their own operations. I’ve mentioned the precision nutrient management studies (https://go.unl.edu/4rvw) for several months. If you weren’t sure if it could apply to your situation, I was told that those don’t have to be precision nutrient applied. So, if you’re interested, please let me know and we can work out the details. There is a $1300 stipend for that specific study. There’s also up to $300 reimbursement from UBBNRD for water quality related studies. I’m currently working through on-farm research protocols for 2021. If you have a production and/or product-related question you want to test on your own farm, please contact me or your local Extension educator and we’d be happy to help you set up a study!

*Note: End of column for newspapers.*
*For mobile devices, please scroll left-right to read the first table below.*


YearCounty/
Irrigation
Pre-PlantIn-Season Rate/
Yield
In-Season Rate/
Yield
In-Season Rate/
Yield
In-Season Rate/
Yield
Other
2015Dodge
(Maize N model)
12 lb N/ac MAP (fall)
80 lb N/ac 32% UAN at plant
70 lb N/ac
222 bu/ac
100 lb N/ac
220 bu/ac
2015Dodge
(Maize N model)
12 lb N/ac MAP (fall)
80 lb N/ac 32% UAN at plant
70 lb N/ac
221 bu/ac
100 lb N/ac
221 bu/ac
2016Dodge
Rainfed
(Climate Field View)
78 lb N as 32% UAN in April30 lb N/ac as 32%+10%ATS (SD)
224 bu/ac
60 lb N/ac as 32%+10%ATS (SD)
226 bu/ac
90 lb N/ac as 32%+10% ATS (SD)
239 bu/ac
2016Dodge
Non-irrigated
(Climate Field View)
78 lb N as 32% UAN in April35 lb N/ac as 32%+10%ATS (SD)
196 bu/ac
65 lb N/ac as 32%+10% ATS (SD)
201 bu/ac
95 lb N/ac as 32%+10%ATS (SD)
201 bu/ac
2016Dodge Pivot70 lb N/ac as NH3110 lb N/ac
247 bu/ac
140 lb N/ac
250 bu/ac
170 lb N/ac
249 bu/ac
2017Dodge
Pivot (4″)
70 lb N as 32% UAN Spring110 lb N/ac 32% (SD)
239 bu/ac
140 lb N/ac 32%
(SD)
243 bu/ac
170 lb N/ac 32% (SD)
251 bu/ac
210 lb N/ac 32% Spring Pre-plant
216 bu/ac*
2017Saunders
Non-irrigated
100 lb N/ac as 32% UAN Spring40 lb N/ac 32% (SD)

195 bu/ac
40 lb N/ac 32%+Humic acid (SD)
199 bu/ac
75 lb N/ac 32% (SD)

200 bu/ac
140 lb N/ac 32% Spring Pre-Plant
193 bu/ac
2017Saunders
Non-irrigated
100 lb N/ac as 32% UAN Spring40 lb N/ac 32% (SD)

183 bu/ac
40 lb N/ac 32%+Humic acid (SD)
183 bu/ac
75 lb N/ac 32% (SD)

185 bu/ac
140 lb N/ac 32% Spring Pre-Plant
185 bu/ac
2018Gage
Non-irrigated
150 lb N as 32% UAN in April. Rye cover crop.0 lb N/ac as AMS (SD)
137 bu/ac*
50 lb N/ac as AMS (SD)
161 bu/ac
100lb N/ac as AMS (SD)
151 bu/ac
2018Franklin
Pivot (4″)
None. Cover crop mix0 lb N/ac as Urea broadcast

210 bu/ac*
100 lb N/ac as Urea broadcast

254 bu/ac
175 lb N/ac as Urea broadcast

272 bu/ac
250 lb N/ac as Urea broadcast
275 bu/ac
*Denotes that yield for the treatment was statistically different from others for a given year and location at the 90% confidence level. (SD)=Sidedress application.

2020 York Spring Anhydrous Nitrogen Rate on Corn
This study essentially showed what the previous studies had: that less nitrogen can be applied without hurting yield or net return. This study is sponsored in part by the UBBNRD.

Pre-PlantIn-seasonlbs N/bu grainYieldMarginal Net Return
110 lb N/ac spring NH3 (March)25 lb N/ac as UAN May0.73 C184 A$599.14 A
160 lb N/ac spring NH3 (March)25 lb N/ac as UAN May0.98 B189 A$600.38 A
210 lb N/ac spring NH3 (March)25 lb N/ac as UAN May1.23 A191 A$594.88 A
*Values with the same letter are not statistically different at a 90% confidence level. Marginal net return based on $3.51/bu corn, $8/ac for the anhydrous application cost, $0.28/lb N as anhydrous, and $0.35/lb N as UAN.

2020 Hamilton County Evaluating Nitrogen Rate and Timing on Corn
This study showed no difference in nitrogen timing nor rate on yield and showed less nitrogen can be applied without impacting yield. For reference, the UNL economical N recommendation for this field was 232 lb/ac N if applied in the fall, 190 lb/ac N if applied in the spring, and 156 lb/ac N if split applied. With a lbs N/bu grain of 1.0 or greater, it would be interesting to see this study conducted again using lower nitrogen rates. Soil samples down to 6 feet were taken by the farmer and the results did not find leaching in any treatments in this study. This study is sponsored in part by the UBBNRD.

Pre-PlantIn-seasonlbs N/bu grainYieldMarginal Net Return
180 lb N/ac Fall NH325 lb N/ac as UAN May1.03 B199 A$629.85 A
230 lb N/ac Fall NH325 lb N/ac as UAN May1.27 A201 A$625.49 A
180 lb N/ac Spring NH325 lb N/ac as UAN May1.02 B201 A$638.30 A
230 lb N/ac Spring NH325 lb N/ac as UAN May1.24 A206 A$641.70 A
120 lb/ac N Spring NH325 lb N/ac as UAN May
60 lb N/ac side-dress V8
1.00 B205 A$645.69 A
170 lb/ac N Spring NH325 lb N/ac as UAN May
60 lb N/ac side-dress V8
1.24 A206 A$633.50 A
Values with the same letter are not significantly different at a 90% confidence level. Marginal net return based on $3.51 bu corn, $0.28/lb N as anhydrous ammonia, $8.00/ac for anhdryous application, $0.35/lb for UAN applied with herbicide or as a sidedress, and $3/ac for sidedress UAN application.

JenREES 2-21-21

On-Farm Research Updates: This week brings my favorite winter meetings, the on-farm research updates on Feb. 25 and 26! I’m passionate about on-farm research as it’s such a practical, inexpensive way to address the research questions growers have! These meetings are more meaningful to me because we get to hear from the farmers themselves who conducted the studies and have more discussion around the topics. They do look different this year with a huge number of people registered virtually vs. in-person. They’re also only a half day and we won’t cover the entire book of studies that were conducted. However, whether you participate virtually or in-person, you will hopefully hear from farmers who conducted on-farm research studies. And, this ‘in-person’ meeting does have people at most local sites also presenting in person. I realize that’s been a point of confusion/frustration as we’ve hosted many zoom meetings as ‘in-person’ watch events where no one presented live at the location. Register for virtual or in-person at: https://go.unl.edu/h83j.

I enjoy hearing from the farmers themselves regarding why they conduct on-farm research. The following YouTube video produced in 2020 highlights area farmers David and Doug Cast of Beaver Crossing and Ken Herz of Lawrence: https://youtu.be/tEy-I43CT0E.

Succession/Estate Planning opportunities are upcoming with a two-part webinar event held Feb. 25 and Mar. 4 at Noon. You can register for those at: https://farm.unl.edu/webinars . There’s also an in-person event at Central City at the Fairgrounds on March 2 at 9:30 a.m. and please RSVP to 308-946-3843 if you’d like to attend.

Tree and Houseplant Webinars: A webinar focused on trees will be Feb. 26 from 9 a.m.-Noon with registration here: Go.unl.edu/ProHort. A houseplant webinar series will occur on Feb. 27 and Mar. 6 from 10-noon with registration here: https://go.unl.edu/houseplants101.

Nitrogen Studies: With spring nitrogen applications around the corner, perhaps you are interested in testing different rates, timing, or inhibitors on your farm? On-farm research is a great option to consider! For some specific precision nitrogen studies (including inhibitors), there are stipends of $1300 available to producers interested in those studies. More info: https://cropwatch.unl.edu/precision-nitrogen-management-farm-research-project. There’s also a partnership with the Upper Big Blue NRD where those interested in conducting nutrient management or cover crop studies may receive $300 in reimbursement costs. If you’re interested in a study like this, please let me know. Next week I’ll share on nitrogen rate and timing results.

Farm Bill: Another tool that may be more visual in helping you make these decisions is the K-State tool at: https://www.agmanager.info/ag-policy/2018-farm-bill/tradeoff-between-20212022-arc-and-plc and I added it to my Farm Bill Decision Tools blog post. It shows you in one chart what happens with potential ARC-CO or PLC triggers by crop depending on what market year average price does or what county yield does. It doesn’t allow you to put in a historical irrigated percentage (HIP), so you need to consider that when selecting ‘irrigated’ or ‘nonirrigated’ in the tool. With it being in one chart, visually, perhaps that would help some of you more? It honestly doesn’t change what I’ve shared with you before, but it seems people are really struggling with this decision, so if you need another way to visualize what to do, it may help. Ultimately, no matter what tool is used, PLC is favored most often in corn, milo, and wheat. Soybeans often could go either way, and likely there may be no payment for soy or corn unless something substantial happens with MYA price or county yields. If you’re really on the fence, it may be helpful/wise to just split decisions between the two programs for different farms? For counties where there’s split irrigated/non-irrigated payments, particularly in areas that are drought-prone, look at what county average yield will trigger ARC-CO for your specific county using the tool. Crop insurance and marketing are ultimately a huge chunk of risk management too. Ultimately, the decision is up to you and no one can predict prices/yields. This information is just shared as a way to hopefully help with your decision making.

I still haven’t heard/seen that 2020 county average yields have been released for me to help anyone with looking at ARC-IC. From the past, we needed around 20% farm level yield loss compared to county average yield for ARC-IC to trigger. So, for those with significant yield loss from wind events, depending on how your farms are grouped, it still may be something to look at. Hopefully county average yields will be available soon.


Quick way to view how county average yields and MYA price can impact ARC-CO or PLC decisions. With Olympic average county corn yield of 234.24 for York County, for this irrigated farm, at the PLC reference price of $3.70 for a MYA price, it would take county average yields falling to 190 before ARC-CO could trigger. The MYA price (based at this county yield of 234.24) would need to be $3.18 before ARC-CO would trigger.
For this Seward county non-irrigated corn field example, it shows Olympic county-average yield is 175.07 bu/ac. At the $3.70 PLC reference price as the MYA price, it would take a county average yield loss of around 30 bu/ac in order for ARC-CO to trigger. It would take a MYA price of $3.18 (based on county-average yield of 175.07 bu/ac) for ARC-CO to trigger.
For this York Co. irrigated soybean example, the decision can go either way. Olympic county average yield is 72.33 bu/ac. At PLC reference price of $8.40, county average yields would have to drop to around 65 bu/ac for ARC-CO to trigger. MYA price would have to drop to $7.70 for ARC-CO to trigger. Reality is that most likely, barring no major yield or price changes, neither program may trigger for soybeans.

JenREES 2/14/21

Cold Weather and Livestock: This week I found gratitude time and again for a warm home. Thinking of those who haven’t been as fortunate. Have also thought about our livestock producers taking care of animals. In the unfortunate event of livestock losses, please document/take photos in the event of any disaster declarations for livestock indemnity payments (LIP).

Crop/Livestock Systems On-Farm Research Study: At last week’s cover crop and soil health conference, Ken Herz shared on his family’s on-farm research study. I’m so proud of and grateful to the entire Herz family for their partnership in this study and for the focus on the economics of an entire system! This study was designed with a system’s perspective incorporating crops, cattle, cover crops in a way that fit many operations in a non-irrigated setting. Their goals were to increase soil organic matter and ultimately determine yield and economics of the entire system. The crop rotation is Wheat (with cover crop planted into stubble after harvest), Corn, Soybean. Cattle graze the cover crop in the winter and also graze the corn residue. No-till wheat prior to corn for increased moisture saving and yield is common in this part of the State as is planting a cover crop into wheat stubble for grazing. The questions I hear include:

1-What moisture and potential yield am I giving up to the successive corn crop if I plant a cover crop into my wheat stubble?
2-If there’s a yield loss in the successive corn crop, do the economics of grazing the cover crop offset that loss?

We had three treatments and two locations (Location 1 had a cool-season cover crop and Location 2 had a warm-season one). The treatments are: ungrazed wheat stubble, ungrazed cover crop, and grazed cover crop. We’ve collected soil property, moisture, nutrient, and health data; yield and moisture of each crop; cover crop biomass; grazing days; and economics.

Location 1 in Nuckolls county began in 2016 with a cool season cover crop planted after wheat was harvested and manure applied. Three-year analysis showed no difference in soil physical properties (bulk density and compaction) amongst treatments. There was greater total microbial and fungal biomass in the grazed cover crop treatment (indicators of improved soil health). Interestingly, the ungrazed wheat stubble is the most economical treatment at this location. Reasons: cost of hauling water for grazing, numerically higher yields in the ungrazed wheat stubble, variable biomass in cool season cover, and a large yield hit to the 2018 soybeans in the grazed cover crop treatment during a dry year. In 2018, to the line there was a stress difference in the soybeans and that treatment read drier via soil moisture sensors. They’ve been conservative with grazing so at the time we couldn’t explain it. In taking soil health tests in year 3, we realized how greatly the microbial biomass had increased where cattle grazed. Our hypothesis is microbes broke down the remaining residue exposing soil to more evaporative losses resulting in less soil moisture and less yield for soybeans in the grazed treatment during a dry year. It’s now on our radar when grazing occurs to get cattle off even sooner to account for feeding the microbes too.

Location 2 in Webster county began in 2018 with a warm season cover crop. Over 4 tons of biomass allowing for 91 grazing days, not hauling water, and no successive crop yield differences all led to the grazed cover crop being the most economical treatment at this location.

Take home points: it’s important to add all the components when looking at economics. Grazed cover crop treatment at Location 1 would look better if we didn’t include the large cost of hauling water and if there was more cool season biomass allowing for more grazing days. The differing results at the two locations showed the influence of cover crop biomass and importance of including value of grazing; fencing/water/labor costs for livestock; cover crop costs; and successive crop yields in system economics. It’s easy to make assumptions that a certain practice is profitable! Location 1 will hopefully continue another 6 years switching the cool season cover crop to a warm season one to compare economics on the same field. We’re curious if the warm season cover will increase biomass and grazing days enough to outweigh the water hauling costs and show a benefit to the grazed cover crop treatment, or if the ungrazed wheat stubble will remain the most economical for this field location.

Regarding cover crop economics, it could be helpful to determine a consistent way for assessing a dollar value for potential benefits such as aiding in weed and erosion control, nutrient uptake, etc. This may aid conversations with landlords and lenders for those desirous to try them. Without livestock value, currently on paper, there’s really only costs.

(End of news column. Photos below are additional information.)


2016 Cover Crop: Cost for spraying wheat stubble was $18/ac. Costs for the non-grazed cover crop treatments were $46.64/ac ($28.64/ac for seed and $18/ac for drilling). Costs for grazed cover crop treatments were $61.94/ac ($46.64/ac for the cover crop seed and planting, $5/ac for fencing, and $10.30/ac for water). Water cost was calculated assuming hauling water (1,000 gal) 15 miles every two days at $2 per loaded mile and $6 per $1,000 gal. Costs for the grazed cover crop treatments equaled $30.97/AUM (animal unit months). Value of the forage is estimated to be $84.80/ac (based on rental rates of $53/pair/month [1.25 AUMs] or $42.40 AUM).
2017 Corn: The economic analysis had no input differences for any of the treatments for corn production. UNL Corn Budget 21 (EC872, 2017 Nebraska Crop Budgets, revised Nov. 2016) was the closest that fit this operation, so a total cost/ac of $459.60/ac and a market year average price of $3.15/bu was used. In the previously established grazed cover crop treatment, cattle grazed on the corn stalks. A $5/ac cornstalk rental rate value was assessed to this 9.6 acre area. This rate assumes water, fencing, and the care of the animals.
2018 Soybean: The inputs were the same for the soybeans planted into all the previous treatments. UNL Budget 56 (EC872, 2018 Nebraska Crop Budgets, revised Nov. 2017) was used, which stated a $315.82/ac total cost. A market year average price of $7.40/bu was used.
2019 Wheat: The inputs were the same for the wheat planted into all the previous treatments. UNL Budget 70 (EC872, 2019 Nebraska Crop Budgets, revised Nov. 2018) was used which stated a $247.04/ac total cost. A market year average price of $3.65/bu was used. 2019 Cover Crop: Cost for spraying the wheat stubble was $18 ($9/ac application and $9/ac herbicide cost). Costs for the non-grazed cover crop treatments were $49.42/ac ($31.42/ac for seed and $18/ac for drilling). Costs for grazed cover crop treatments were $64.00/ac ($49.42/ac for the cover crop seed and planting, $5/ac for fencing, and $9.58/ac for water). Water cost was calculated based on hauling water (5.75 water trips at $16/trip which included cost of water). Costs for the grazed cover crop treatments equaled $54.78/AUM (49.42*9.6=474.43/8.66AUM from what was grazed=54.78). Value of the forage is estimated to be $84.80/ac (based on rental rates of $53/pair/month (1.25 AUMs) or $42.40 AUM). Forage production was limited in fall of 2019 compared to 2016 due to wet summer that delayed wheat harvest which delayed cover crop planting. Cool fall led to less growth. Only 8.66 AUM was achieved with the 2019 cover crop compared to 19.03 AUM with the 2016 cover crop.
2020 Corn: The economic analysis had no input differences for any of the treatments for corn production. UNL Corn Budget 23 (EC872, 2020 Nebraska Crop Budgets, revised Nov. 2019) was the closest that fit this operation, so a total cost/ac of $452.10 and a market year average price of $3.51 was used. In the previously established grazed cover crop treatment, cattle grazed on the corn stalks. A $5/ac cornstalk rental rate value was assessed to this 9.6 acre area. This rate assumes water, fencing, and the care of the animals.
2018 Cover Crop: Costs to spray the wheat stubble for weed control were $18/ac. Costs for the non-grazed
cover crop treatments were $41.82/ac for cover crop seed and drilling. Costs for the grazed cover crop
treatments were $47.74 ($41.82/ac for cover crop seed and drilling, $5/ac for fencing, and $0.92/ac water).
Grazing benefit is $6370 (using a value of $2.00/head/day) for the 52.3 acres grazed. The resulting net
benefit is $74.06/acre.
2019 Corn: The economic analysis had no input differences for any of the treatments for corn production.
UNL Corn Budget 23 (EC872, 2019 Nebraska Crop Budgets, revised Nov. 2018) was the closest that fit this
operation, so a total cost/ac of $438.08/ac and a market year average price of $3.83/bu was used. In the
previously established grazed cover crop treatment, cattle grazed on the corn stalks. A $5/ac cornstalk
rental rate value was assessed to this 52.3 acre area. This rate assumes water, fencing, and the care of the
animals.
2020 Soybean: The economic analysis had no input differences for any of the treatments for soybean
production. UNL Soybean Budget 58 (EC872, 2020 Nebraska Crop Budgets, revised Nov. 2019) was used
which states a $392.90/ac total cost. A market year average price of $9.50 was used.

JenREES 2-7-21

Nitrification Inhibitors: For the next several weeks I will share data from on-farm research studies. Nitrification Inhibitors are best thought of as an insurance policy against loss of applied ammonium-based fertilizer due to excess rain in the first month or so after fertilization. For spring applications, some active ingredients have been proven by research to slow the conversion of ammonium to nitrate for at least two weeks, with a range of 1-6 weeks, depending on soil temperature. They are one tool (not a silver bullet), when used at right place and time, for aiding in nitrogen management. To summarize the research below, nitrification inhibitors are less likely to have a significant impact on increasing yield and reducing nitrate leaching in silt loam and silty clay loam soils as compared to sandy soils.

An ongoing study at UNL’s South Central Ag Lab (SCAL) near Clay Center is conducted on silt loam soils, common in the UBBNRD. The majority of the study at SCAL compared Spring pre-plant anhydrous vs. side-dress application with and without the use of nitrification inhibitor N-Serve® (nitrapyrin). A yield increase due to nitrapyrin applied pre-plant was observed in 6 of 28 years with a mean yield change of 2 bu/ac/year. Only 1 of 28 years was a yield increase observed when nitrapyrin was applied in season during side-dress application with a mean yield change of 0 bu/ac/year. In this study, they found delayed side-dress N with nitrapyrin could reduce plant N uptake and release N too late, thus it is not recommended to add an inhibitor to nitrogen applied in-season.

In 2019, two York Co. farmers compared spring anhydrous ammonia applications with and without the nitrification inhibitor (N-Serve®). At York location 1, 180 lbs N as anhydrous was applied on April 10, 2019 in ridge-till, silt-loam soil. At York location 2, 160 lbs N as anhydrous was applied on April 8, 2019 in no-till, silt-loam soil. These locations were around 4 miles apart and the previous crop in both was soybean. Soil samples were taken 2” off the anhydrous band down to three feet for both ammonium and nitrate concentrations at V7 growth stage. The results showed the nitrification inhibitor was still slowing the conversion of ammonium to nitrate in 1st foot at York 1 location (longer than would be anticipated for a spring-applied inhibitor treatment), but not at York 2. At both study locations, no yield difference occurred between the check and inhibitor treatments respectively (250 vs. 251 bu/ac at York 1 and 264 vs. 264 bu/ac at York 2).

In 2020, four farmers (3 in York Co. and one in Fillmore Co.) conducted on-farm research inhibitor studies. These studies were in partnership with the UBBNRD. Soil samples for ammonium and nitrate concentration were taken around 6 and 9 weeks post-application based on the protocol provided. Note: with these being inhibitor focused studies, future protocols will have soil tests taken closer to application. With farmers interested in what nitrogen distribution in the profile looks like in the late season, we will also sample then.

At York location 1, 150 lbs N as anhydrous was applied in the fall and spring with and without Centuro®. Soil tests in early May showed less total nitrogen in the third foot for the Spring anhydrous with Centuro® compared to Fall anhydrous with no inhibitor. There were no yield differences between treatments in 2020 (Fall and Spring check yielded 269 bu/ac, Fall with Centuro® 267 bu/ac, Spring with Centuro® 270 bu/ac). This study will continue. The other three locations had yields impacted by the July 9, 2020 wind event. At the Fillmore Co. location, 115 lbs spring applied 32% UAN with and without Instinct® II was compared. There was less nitrate and total nitrogen in the Instinct® II treatment at 2nd and 3rd foot vs. the check and there were no yield differences (both yielded 213 bu/ac). At the York 2 location, four products were compared (44 gal. spring applied 32% UAN as a check compared to the check plus either ammonium thiosulfate (ATS), Biovante™, or Instinct® II. The UAN+ Instinct® II had less nitrate and total nitrogen in the 3rd foot than the UAN+ Biovante™. The UAN+ATS treatment yielded significantly more than the check (215 bu/ac vs. 209 bu/ac) with no differences amongst the other treatments (212 bu/ac each). At the York 3 location, 45 gal spring applied 32% UAN was compared to a producer-developed concoction containing humic acid, sugar, and ATS. There was more nitrate, ammonium, and total nitrate in the inhibitor concoction than the check at the 3rd foot with no yield differences (220 bu/ac check vs. 221 bu/ac inhibitor concoction). These and other Nebraska on-farm research studies will be presented Feb. 25-26 both virtually and in-person. You can learn more and register here: https://go.unl.edu/h83j.


JenREES 10-18-20

This week I don’t have a crop update, just grateful for how well harvest continues to progress and how many farmers have shared they finished this week or are near the finishing mark. It’s also heartwarming to see so many friends and neighbors rally around farmers in need across the country.

Picture taken from June 2020 soil sampling of 1′, 2′, 3′ depths in on-farm research nitrification inhibitor studies.

I’m also grateful to all the farmers who worked with me in on-farm research studies and plots this year! We had 20 and will share the results when the data is compiled. Six of the on-farm research studies were on nitrogen management in partnership with the UBBNRD. As harvest finishes and you turn your attention to planning for next season, one topic on your mind may be nitrogen management. There was a recent CropWatch article written with some considerations here: https://cropwatch.unl.edu/2020/planning-2021-fertilizer-n-application-following-dry-2020

Are you interested in how agricultural technologies can improve nitrogen management on your farm? Nebraska Extension received a $1.2 million On-Farm Conservation Innovation grant from USDA – Natural Resource Conservation Service which connects corn and wheat producers across Nebraska with access to cutting-edge technologies through on-farm research. The goal is for producers to get hands-on experience with new technologies to manage nitrogen more efficiently and evaluate how these technologies will work on their operations. Interested producers will be able to select from several project options. They include:

  • Nitrification Inhibitors for Corn
  • Crop Canopy Sensing for Corn N Management
  • Crop Model Based Tools for Corn N Management and Split-Applications
  • Crop Sensing for Wheat N Management.

Producers and consultants will work closely with Nebraska Extension to accomplish the project. Eligible producers who complete these studies will receive $1,300 for recognition of their time and resource commitments and to mitigate risk of potential yield (and therefore potential profit) loss. Cooperating producers will also be eligible to receive up to $1,200 for eligible technology costs associated with these studies.

Interested growers should contact me at jrees2@unl.edu, your local Extension Educator, or Laura Thompson, Director, Nebraska On-Farm Research Network at laura.thompson@unl.edu. Additional information regarding the project can be found at https://cropwatch.unl.edu/precision-nitrogen-management-farm-research-project.

Women Managing Ag Land Conference on Dec. 2nd from 11:30 a.m.-2:30 p.m. will offer learning opportunities for female farmland owners and tenants looking to improve their business management skills and navigate the challenges of owning and renting agricultural land. Attendees will have the opportunity to attend either in person or virtually via Zoom. The closest in-person event locations near Eastern Nebraska R&E Center near Mead and Holiday Inn at Kearney will have limited attendance and health measures will be implemented. The keynote address, “Finding Happiness in the Craziness of Life,” will be delivered by Kathy Peterson, a farmer from Storm Lake, Iowa, and founder of PeopleWorks, Inc. Additional topics include: “Improve your Ag Lease by Improving the Landlord/Tenant Relationship” by Extension Educator Allan Vyhnalek, “NextGen A Win-Win for Beginning Farmers & Asset Owners” by Karla Bahm with NDA, “Navigating Uncertainty in 2021: Nebraska Land Values & Cash Rental Rates” with Ag Economist Jim Jansen, and more!

Registration on or before Nov. 18, is $25. Registration on or after Nov. 19 is $30. Registrations for in-person locations will close Nov. 29. Lunch will be included at each in-person site. This conference is hosted by Nebraska Extension and inspired by Annie’s Project. More information and registration at: https://wia.unl.edu/WMAL.

JenREES 3-1-20

Happy March! One question that’s surfaced often is ‘at what maturity of corn and soybean do we start losing yield?’ There are many reasons for this question including planting a range of maturities to spread harvest load, taking advantage of marketing opportunities, and even planting shorter maturities to allow for increased cover crop biomass after harvest. The past two years, on-farm research growers in York and Seward Counties have compared Group 2 vs. Group 3 beans planted early to determine any yield differences. In 2018, combining the data from 16 reps over 3 locations planted the first week of May, the Group 2 and Group 3 beans yielded 70.2 bu/ac vs. 71.5 bu/ac respectively with no yield difference. In 2019, there were 13 reps over 3 locations. We don’t have these analyzed as a group. At the first (non-irrigated) location planted April 22, the 2.1 bean significantly out-yielded the 3.1 bean (70 bu/ac vs. 67 bu/ac). At the second (irrigated) location planted May 2, the 2.4 and 2.7 beans significantly out-yielded the 3.1 and 3.3 beans (71, 73, 70, and 67 bu/ac respectively). At the third (irrigated) location planted May 16, there was no difference between the 2.7 and 3.4 beans (71 vs. 72 bu/ac respectively).

Small plot research containing 16 soybean varieties with 8 relative maturities (range from 0.3 to 4.7) in Nebraska, Ohio, and Kentucky showed that soybean yields leveled off with no differences between Group 3 and Group 4 beans. They found a 3-4 bu/ac difference between Group 2 and 3 beans across locations. Ultimately, from looking at a variety of research studies including our on-farm research studies, we would suggest that when comparing really high yielding genetics of Group 2 vs. Group 3 beans, there aren’t yield differences. The small plot research also showed that there was an 11-13 day difference between R8 (full maturity) occurring in soybean from Group 3 to Group 4 and a 10 day difference between Group 2 to Group 3 occurrence of R8. What this suggests is for those seeking to plant Group 2 beans to get cover crop biomass established after harvest, one can gain an additional 10 days by following the drill behind the combine compared to planting a Group 3 bean and an additional 20 days compared to a Group 4 bean. It’s estimated every 0.1 in maturity results in 1 day harvest difference. Looking at our on-farm research data in York and Seward, for the grower who harvested the different maturities based on 13% moisture, the harvest date difference between his Group 2 vs. Group 3 beans lined up pretty well with that line of thinking.

For corn, relative maturities of 95, 105, 111, and 113 days were planted in 2017 in two locations. That year showed no yield difference for the 105-113 day but it dropped off for the 95 day. In 2018, relative maturities of 95, 99, 105, 111, and 113 were compared at one location. The yield trend showed the 113 day yielding significantly higher than 111 and 105 with the 95 and 99 day yielding the least. Based on that data and data from UNL’s South Central Ag Lab (SCAL), a 105 day relative maturity appears to be the cut off before seeing significant yield loss., but corn yields vs. maturity are highly dependent on hybrid and growing season. Greatest fall and spring cover crop biomass at SCAL planted after corn harvest (2015-2016) occurred after harvesting 88-105 day relative maturities.

Kiwanis Club of Seward 52nd Ag Recognition Banquet will be held March 16 at the Ag Pavilion at the Seward County Fairgrounds. The evening social begins at 5:30 p.m. with wine by James Arthur Vineyard and cheese from Jisa’s Farmstead Cheese. At 6:30 p.m. will be the prime rib dinner. Greg Peterson of the Peterson Brothers (YouTube celebrities) will be the evening entertainment. Honored as the Seward Kiwanis Outstanding Farm Family of the Year is Tomes Family Farm (Bill, Patty, Andrew, and Becky). Honored as the Seward County Agribusiness of the Year is the Lawrence and Della Beckler Family (Richard, Ruth and Kris Beckler). To purchase tickets, please call Shelly at (402) 643-3636.


2018 soy maturity data.PNG

2019 soy maturity data.PNG

SCAL cover crop biomass.PNG

JenREES 2-16-20

This week begins Nebraska Extension’s On-Farm Research Update meetings. Over 100 studies were conducted in 2019! Each meeting runs from 9 a.m.-4 p.m. (registration at 8:30 a.m.). Meal is included and there’s no cost thanks to our partnerships with Nebraska Corn, Soybean, and Dry Bean Boards and Growers’ Associations. Please pre-register at: onfarm@unl.edu or 402-624-8030. Meetings are: Feb. 18 at Holiday Inn Express in Beatrice, Feb. 19 near Mead at ENREC, Feb. 20 in Norfolk at the Extension Office, Feb. 26 in Kearney at the Extension Office, and Feb. 28 in York at the Holthus Convention Center. At the meetings, you will receive a book of all the 2019 studies and hear from the farmers who conducted the studies if they are present at that specific location. What’s powerful about that to me is that you get to hear from your peers and the discussion and questions are greater. At all locations except for York, all the studies in the book will be shared. New this year to only the York location, only the cover crop on-farm research studies will be shared followed by outside speakers sharing about cover crop/soil health topics. That meeting also qualifies for UBBNRD nitrogen credits.

On-Farm research in Nebraska has occurred the past three decades. Growers partner with Extension and sometimes other government agencies and ag industry to test questions on their own farms using their own equipment benefiting many with the information. We often don’t have funding to do these studies. Thus, I’m extra grateful for our cooperating growers to research products and production practices that may not happen otherwise!

Sometimes, it’s best to hear from the farmers themselves regarding why they conduct on-farm research. The following YouTube video highlights area farmers David and Doug Cast of Beaver Crossing and Ken Herz of Lawrence:

Ron soil sampling.jpg

Ron Makovicka helping me take soil samples for his study.

https://youtu.be/tEy-I43CT0E.

Three York County farmers were also featured in a CropWatch article sharing their on-farm research experiences. Ron Makovicka and Jerry Stahr have conducted on-farm research since the beginning while Jay Goertzen was a first year participant. “Anytime you can get information, it’s very valuable. You can always learn something,” Stahr said. Goerzten shared, “There’s good support provided to help set up a research plot, help you with the follow through, and collecting data in-season.” All shared there was value in trying studies on your own farm with Makovicka emphasizing, “Go for it!”

This year, Makovicka and Stahr worked with me to compare areas with and without the nitrification inhibitor (N-Serve®) with their spring anhydrous ammonia applications. Nitrification inhibitors may reduce the rate at which ammonium is converted to nitrate thus helping reduce N losses through denitrification and leaching. Stahr applied 160 lbs N as anhydrous on April 8, 2019 in no-till, silt-loam soil. Makovicka applied 180 lbs N as anhydrous on April 10, 2019 in ridge-till, silt-loam soil. These locations were around 4 miles apart and the previous crop in both was soybean. At both study locations, no yield difference occurred between the check and inhibitor treatments. Soil samples were taken 2” off the anhydrous band down to three feet for both ammonium and nitrate concentrations at V7 growth stage. The results showed the nitrification inhibitor was working to slow the conversion of ammonium to nitrate in Makovicka’s field but not Stahr’s. We don’t have a good explanation for this. However, the results are consistent with other University studies conducted in silt loam soils.

Those are two examples of on-farm research studies. If you’re interested in trying a study for 2020, please contact your local Extension Educator. We work with you to set up your study in a scientifically valid way to work with your equipment. There’s also an opportunity to obtain up to $300 reimbursement for water-quality related studies through the UBBNRD (there is a short application form for that through the NRD). Please also save Mar. 2 from 9-Noon for an on-farm research ‘brainstorming’ meeting at the 4-H Building in York. I’ll share more on that and other study results next week.

JenREES 1-12-20

Great to see and meet so many at the York Ag Expo last week! And, to the 156 of you who attended pesticide training, thank you again for your kindness and grace with the packed room and overflow to the hallway. Sharing this week on February upcoming ag programs and adding the flyers to https://jenreesources.com.

Jan. 28th is the Farmers and Ranchers Cow-Calf College at the US Meat Animal Research Center near Clay Center. Registration begins at 9:30 a.m. with program beginning at 9:55 a.m. Topics include: Forage Sampling, Understanding Annual Cow Costs, Questions to Ask Your Vet before Calving Season, Blockchains: Connecting Consumers with their Food (IMI Global), and Alternative Meats and Alternative Statistics: What the data says. There is no charge and meal is provided. It’s best to pre-register to save time and you can do so at https://go.unl.edu/frcollegereg. You can also RSVP at (402) 759-3712.

Feb. 4 is the Hamilton County Ag Day at the fairgrounds in Aurora (Reg. at 9 a.m. with program beginning at 9:30 a.m.). Attendance at this event qualifies for UBBNRD nitrogen management training. Many have asked about nitrogen research and this event is geared towards providing that. Topics include: In-season nitrogen application, management to reduce nitrate leaching, fertigation equipment & procedures for in-season management, crop nutrients from manure, cover crops and nitrogen management, optimum irrigation application, on-farm research for evaluating N management, land rental considerations for 2020, in addition to updates from Nebraska Corn and USDA. There is no charge.

Feb. 13 is the Nebraska Cover Crop Conference near Mead with registration beginning at 8:30 a.m. and program from 9 a.m.-3:30 p.m. This year’s focus is on interseeding cover crops into corn/soybean. Loran Steinlage from Iowa will share what he’s doing with 60” row spacings and keeping something growing in his fields 365 days of the year. Noah Seim from Merrick County (30” rows for a few years) and Jay Goertzen from York County (36” rows for 1 year) both have interseeding projects with Nebraska on-farm research and will share their experiences. Additional Topics/Speakers include: Finding the right fit with cover crops (Abbey Wick from NDSU), Selling cover crop seed in Nebraska (Steve Knox with Nebraska Crop Improvement), Accelerating soil health adoption by quantifying economic and environmental outcomes (Brian Brandt, Ohio), Review of cover crop demonstrations in the Central Platte NRD (Dean Krull), Cover crops by helicopter: FAQ (Brent Wulf, Hexagon Helicopters, Inc.), and Soil Health (Aaron Hird, NRCS). There is no charge for this event including meal and it’s a large event. Registration is required by Feb. 7. More info. and register at: https://extension.unl.edu/statewide/enre/nebraska-cover-crop-conference/ or 402-624-8030.

Nebraska On-Farm Research Updates: Believing in the value of on-farm research, these are among my favorite meetings each year! These meetings give you an opportunity to hear from your peers regarding research they’re trying in cooperation with Nebraska Extension. We often wouldn’t have research on topics many of you ask me about if it wasn’t for our on-farm research cooperators, so I’m grateful to them! Dates include: Feb. 18 at Holiday Inn Express in Beatrice, Feb. 19 near Mead at ENREC, Feb. 20 in Norfolk at the Extension Office, Feb. 26 in Kearney at the Extension Office, and Feb. 28 in York at the Holthus Convention Center. The Feb. 28 meeting in York will be unique focusing only on cover crop and soil health research and that meeting also qualifies for UBBNRD nitrogen management training. Each meeting runs from 9 a.m.-4 p.m. (registration at 8:30 a.m.). Meal is included and there’s no cost thanks to our partnerships with Nebraska Corn, Soybean, and Dry Bean Boards and Growers’ Associations. Please pre-register at least 2 days in advance for meal planning purposes to: onfarm@unl.edu or 402-624-8030.


IMG_20200106_084421cow-calf collegeweed science schoolAurora AgDay2020Nebraska Cover Crop Conference2020 On-Farm Research UpdatesBroiler Manure Application Flyer

JenREES 4-14-19

*Note: you may have to turn your cell phone horizontal to more easily read this post.*

Some commented we’ve felt all four seasons last week! This additional weather event didn’t help with stress levels. Disaster stress stages can include heroic, honeymoon, disillusionment, and reconstruction. Heroic was at the beginning of the blizzard/flood disaster. This quickly progressed into the honeymoon phase where we’ve seen an outpouring of support to help with donations, clean-up, etc. It’s very heart-warming and provides some hope in the midst of disaster. While there’s overlap of phases, we’re seeing more of the next stage called ‘disillusionment’ now. This phase can last a year with events like this past week’s weather triggering new anger, grief, loss. It’s during this phase that people more affected by disaster can feel forgotten as others not affected move on with life. And, those not as affected as neighbors/others may experience guilt. For any type of stress, it’s important to talk to a trusted friend, family member, counselor, pastor and not isolate. Unhealthy coping can include turning to substance abuse or other unhealthy options. I’ve been asked what can be done to help. Perhaps the biggest help is to keep praying. Also, keep checking on and reaching out to friends, family, neighbors. These things are more helpful than I can express here! Reminder: the Wellness for Farm and Ranch Families webinar will be held on April 23rd from Noon-1 p.m. at: http://go.unl.edu/farmstresswebinar.

In-Season Nitrogen: I know several were glad to get some nitrogen on last week! For those in NRDs which require nitrogen rates based on UNL recs, it’s important to note that the UNL nitrogen equation uses a weighted average soil nitrate test for the ppm Nitrate. A minimum of 2’ is required. Thus, if you only have a 0-8” soil sample, you have to account for a weighted average or the equation will overestimate the amount of soil nitrate and result in a lower requirement than what may be needed. The Extension circular “Fertilizer Recommendations for Corn” (http://extensionpublications.unl.edu/assets/pdf/ec117.pdf) explains this in detail with an example. There is also an excel spreadsheet that does this for you when you input the depth of soil samples taken. If you’d prefer to use the excel spreadsheet, you can find it at the following website by scrolling to “Corn Nitrogen Recommendations Calculator” https://cropwatch.unl.edu/soils.

With a full soil moisture profile, some have wondered at the impact of using a nitrification inhibitor with their anhydrous this spring. We have a couple farmers testing this and if you’re interested, here’s an on-farm research protocol: https://go.unl.edu/j9dg.

We’ve had some on-farm research studies recently look at sidedress applications using either the UNL equation/Maize N model or industry models such as Climate Field View. In all these studies, the recommended rate was compared to rates that were at least 30 pounds over and under the recommended rate. Some of the studies went as high as +/- 50 lbs/acre compared to recommended rate. I’ve compiled these results in a table at http://jenreesources.com. Take homes: In none of the studies did the addition of 30-50 lbs N/ac above the recommended rate increase the yield statistically. A few of these studies also compared side-dress applications vs. pre-plant alone. One situation resulted in a statistically lower yield with pre-plant alone while the other two resulted in no yield differences. In-season nitrogen studies is our featured on-farm research study this year. You can find protocols at: https://cropwatch.unl.edu/farmresearch/extensionprotocols.

For chemigating fertilizer, often we tend to apply 30 pounds of nitrogen with each quarter inch of water. However, Randy Pryor shared: “did you know that a high capacity injector pump on a pivot can supply 50-60 pounds of nitrogen with a quarter inch of water safely on corn with one application? A soil at field capacity will still intake a quarter inch of irrigation water. Split applications of nitrogen reduces risks with corn injury when the time window is shortened between pre-plant anhydrous applications and corn planting.”

Soil Temperatures: Soil temperatures are available at https://cropwatch.unl.edu/cropwatchsoiltemperature. Your local field and lawn conditions may vary, so you can check with a meat thermometer at 4″ depth. It’s too early for crabgrass preventer. More on that and planting considerations next week.

#NebraskaStrong also means being strong enough to ask for help. Nebraska Family Helpline: 888-866-8660. Nebraska Farm Hotline: 800-464-0258.

*Note: End of column for newspapers.*


 

Nebraska On-Farm Research Corn Yield Results (2015-2018) where Growers Tested a Base Pre-Plant + Varying In-Season Nitrogen Rates

Year County / Irrigation Pre-Plant In-Season Rate/

Yield

In-Season Rate/

Yield

In-Season Rate/

Yield

In-Season Rate/

Yield

Other
2015 Dodge

 

(Maize N Model)

12 lbs N/ac MAP (fall)

80 lbs N/ac 32% UAN at planting

70 lbs N/ac

222 bu/ac

100 lbs N/ac

220 bu/ac

2015 Dodge

 

(Maize N Model)

12 lbs N/ac MAP (fall)

80 lbs N/ac 32% UAN at planting

70 lbs N/ac

221 bu/ac

100 lbs N/ac

221 bu/ac

2016 Dodge

Rainfed

(Climate Field View Model)

78 lbs N as 32% UAN in April 30 lbs N/ac as 32% + 10% ATS (SD)

224 bu/ac

60 lbs N/ac as 32% + 10% ATS (SD)

226 bu/ac

90 lbs N/ac as 32% + 10% ATS (SD)

239 bu/ac

2016 Dodge

Non-Irrigated

(Climate Field View)

78 lbs N as 32% UAN in April 35 lbs N/ac  as 32% +10% ATS (SD)
196 bu/ac
65 lbs N/ac as 32% + 10% ATS (SD)

201 bu/ac

95 lbs N/ac as 32% + 10% ATS (SD)

201 bu/ac

2016 Dodge

Pivot Irrigated

 

70 lbs N/ac as NH3 110 lbs N/ac

247 bu/ac

140 lbs N/ac

250 bu/ac

170 lbs N/ac

249 bu/ac

2017 Dodge/

Pivot Irrigated 4”

70 lbs N/ac as 32% UAN Spring

 

110 lbs N/ac 32% (SD)

 

239 bu/ac

140 lbs N/ac 32% (SD)

 

243 bu/ac

170 lbs N/ac 32% (SD)

 

251 bu/ac

210 lbs N/ac 32% Spring Pre-Plant

216 bu/ac*

2017 Saunders

Non-Irrigated

100 lbs N/ac as 32% UAN Spring 40 lbs N/ac 32% (SD)

195 bu/ac

40 lbs N/ac 32% + Humic Acid (SD)

199 bu/ac

75 lbs N/ac 32% (SD)


200 bu/ac

140 lbs N/ac 32% Spring Pre-Plant

193 bu/ac

2017 Saunders

Non-Irrigated

100 lbs N as 32% UAN Spring

 

40 lbs N/ac 32% (SD)

183 bu/ac

40 lbs N/ac 32% + Humic Acid (SD)

183 bu/ac

75 lbs N/ac 32% (SD)

185 bu/ac

140 lbs N/ac 32% Spring Pre-Plant/

185 bu/ac

2018 Gage

Non-Irrigated

150 lbs N as 32% UAN in April. Rye cover crop. 0 lbs N/ac as AMS  (SD)

137 bu/ac*

50 lbs N/ac as AMS (SD)

161 bu/ac

100 lbs N/ac as AMS (SD)
151 bu/ac
2018 Franklin

Pivot Irrigated 4”

 

None. Cover crop mix. 0 lbs N/ac as Urea broadcast

210 bu/ac *

100 lbs N/ac  as Urea broadcast

254 bu/ac

175 lbs N/ac as Urea broadcast

272 bu/ac

250 lbs N/ac as Urea broadcast

275 bu/ac

*Denotes that treatment was statistically different from others for a given year and location at the 90% confidence level. All other treatments without this denotation are not statistically different although they may be numerically different due to variability.

(SD) = Sidedress application

JenREES 2-17-19

We had our 4-H Festival tonight in York. IMAG5247Sometimes I need to be reminded how cool ag is and not take it so easily for granted. Watching the kids exclaim “that is so cool!” when looking at fungal spores under the microscope or seeing both youth and parents be amazed to see the root and early leaves with soybean dissection repeatedly brought a smile to my face. Any youth ages 6-18 are welcome to join me every month for Crop Science Investigation (CSI). At each meeting, the youth become detectives to solve a real-life problem about plants. Learning is hands-on, youth don’t have to be in 4-H to attend, and also can be from outside of York County. Our next meeting will be March 25th from 5-6 p.m. at the York Co. Extension Office and every third Monday of the month after that. Please contact me at jrees2@unl.edu to RSVP or for more information.

On-Farm Research Brainstorming Meeting: Last week I shared about on-farm research and the updates that are occurring this week throughout the State. Because we cover so many research projects at those updates, there’s not a lot of time for growers to just brainstorm and talk about projects they’re considering for this year. So, I’m having an on-farm research brainstorming meeting on Monday, February 25th from 10 a.m.-Noon at the 4-H Building in York. I will also provide lunch at Noon for those attending in person. We will also have a distance connection available for Extension Offices in other parts of the State and I can share that link with anyone who is unable to attend in person. Please RSVP to me (jrees2@unl.edu) if you plan on attending or if you would like to join us via weblink. Purpose: Brainstorm on-farm research topics to conduct this year and better determine who is interested in which studies to see if we can get several to conduct the same study. A number of growers have contacted me since harvest with project ideas. What has been shared thus far include: interseeding covers at V3-V5; biological products including some heard about during No-Till on the Plains; renewed interest in applying sugars; soy pop looking at impact on soybean stem borer; economics of lower corn pop with high flex hybrid under irrigation vs. current pop; second year for some on early vs. later maturity group soy planted early; Chris Proctor and my interest in small grain or other cover on soybean endrows (document palmer); comparison of sorghum vs. corn in non-irrigated setting looking at economics for Nebraska. Come with any topics you’re interested in discussing and looking forward to the discussion!

Soybean Seed Quality: The wet fall brought challenges with harvest and seed quality.

Soybeans with purple seed stain (left) and soybeans showing signs of seed decay due to Phomopsis disease complex. (Photo by Jenny Rees)

Purple Seed Stain (left) and Phomopsis Seed Decay (right). Photo by Jenny Rees, Nebraska Extension.

Not surprisingly, we’re hearing about reduced germination for soybean seed next year. There’s an article in this week’s CropWatch at http://cropwatch.unl.edu that goes into more details. Essentially in seeds infected with fungi causing purple seed stain and also phomopsis seed decay, reduced germination is occurring. Steve Knox, manager of the Nebraska Crop Improvement Association shared that while a few lots came in at or above 95% germination, results are averaging in the mid 80% range. In a typical year, soybean seed lots tested by the Nebraska Crop Improvement Association (NCIA) range from 88% to 98% germination. This year samples thus far ranged from 43% to 98% germination. The minimum germination for certified soybean seed is 80%, as set by the Association of Official Seed Certifying Agencies (AOSCA). The Nebraska Department of Agriculture has set a minimum germination standard of 75% for soybeans. On a phone call, Steve mentioned that all the moldy and dead seed were removed from the samples before conducting germination tests. They did test the purple seed stained soybeans and found little to no germination reduction in infected seeds. Purple seed stain is seed transmitted; thus, if you have seed lots that are infected at planting, you may notice it at harvest as well. You may also have noticed soybean seed last fall that had very tightly wrinkled seed coats. This was due to the continual wetting/drying process beans went through with rain and wind events. Steve said soybeans with those characteristics didn’t germinate at all thus far but there’s few soybeans with those characteristics in most seed lots tested thus far. Iowa State research found that adding a fungicide seed treatment to lower quality seed could increase the germination percentage up to 15%. However, a fungicide seed treatment won’t improve germination of dead or dying seeds. Seed treatments should be considered when germination rates are below normal and when you’re planting into cold, wet soils. It’s important for growers to check the germination rate of soybean seed this year. Regarding any adjustments for seeding rates, when we conducted on-farm research soybean seeding rate studies, we did not adjust for the germ on the bag (seeded 90K, 120K, 150K, and 180K with no adjustments). However, every seed lot had at least 90% germ in those studies. We’re not recommending to adjust for 80-98% germ if the grower seeds 150K+ because there’s already enough seed planted without adjustment based on our research. However, those planting less than 150K may wish to consider adjusting this year if germination for their seed is in the 80-89% range.

<span>%d</span> bloggers like this: