Corn: I really enjoy this stage when corn is just tall enough to give the fields a green cast when looking at them from an angle. There continues to be discussion and questions about uneven corn emergence. Like many, I wasn’t anticipating seeing uneven emergence after having great soil conditions (right moisture and a warming trend of temps) for planting. Variations in soil temp, depth, and moisture can delay germination from a few days or longer. Residue blowing back over the row explained much difference in emergence this year. I wish I would’ve noted the days on my calendar, but there’s a couple warm days in late April during planting where it just seemed like the moisture rapidly left the soil surface. And, in conversations it seems as if others noticed that too. So I think moisture around seed was another factor as was fertilizer burn in some situations. Purdue University has some research which showed yield reductions of 6-9% for plants emerging 1.5 weeks later than a uniformly emerging stand. They also found yields of uneven stands to be similar to planting the stand 1.5 weeks later.
If you’re side-dressing nitrogen and interested in testing different rates, we have some on-farm research protocols available at: https://go.unl.edu/tv63.
With warmer temperatures anticipated, corn will grow rapidly. This week we wrote an article in CropWatch regarding proper growth staging of plants; this will be extra critical once we hit V6+. Remember to use the leaf collar method and this is how I explain it. A collar develops at the leaf base near the stalk after each leaf fully expands. Think about collars like the collar on a button-down shirt. The collar flares slightly at one’s neck, just as a true exposed leaf collar flares at the base of the leaf at the stem. Start counting leaves at the base of the plant with the smallest rounded-tip leaf with a collar as #1. From there count every leaf with a true collar. Leaves that are still wrapped in the whorl around the main stem without exposed leaf collars are not counted. I recommend taking a picture inside the end rows to document the growth stage of your field prior to the post-application of herbicide. Next week I will share my experiences with proper growth staging to avoid ear abnormalities. Also be aware of potential off-target movement with dicamba products and higher temperatures.
Soybean: In most cases, soybeans are looking really good. There have been situations this week with herbicide damage to beans that may have been cracking when irrigation or rainfall event occurred allowing some pre-emergent herbicide to enter the row. Pre- herbicides can also rain splash onto cotyledons and first leaves making them look bad, but usually doesn’t kill them unless the weather stays cold and wet. If the plants end up severely pinched below the cotyledons, they won’t survive. Otherwise, keep watching them as they may continue to grow (warm weather will allow them to grow and metabolize the chemical better). I think we’re also possibly seeing some environmental effects from the cold conditions that occurred after planting/emergence when we can’t always explain the appearance of injury on the plant by herbicide. The ‘halo’ effect of ILeVo is another thing that is being mistaken as herbicide and/or environmental injury but it doesn’t last past the cotyledon stage.
Coronavirus Food Assistance Program for Crop Producers Webinar: There will be a webinar on June 4th at Noon (CST) to learn more. Registration is required at the following site: https://go.unl.edu/wj0e. In the meantime, Dr. Brad Lubben has put together an article with more information at: https://go.unl.edu/h3aq. All webinars are also archived at that same web link.
Irrigation Scheduling Equipment: It’s also a great time to get irrigation scheduling equipment installed! I decided to make a quick video instead of writing; it can be found at: https://youtu.be/4r5gn2pvvB4.
Gardeners: For all of you gardening for the first time, congrats! Some tips: keep soil moisture even by ensuring plants have around 1” of water/week (Best to water at base of plant; if use sprinkler, do so in early morning). Mulching gardens with leaves, grass clippings, straw, newspapers aids in conserving moisture, reducing weeds, and maintaining stable soil temperature. If herbicides were added to grass clippings, make sure to read the label for if/when they can be applied to a garden. In general, many labels will say grass clippings are safe after 4 mowings.
As I write this, I’m setting outside on a beautiful sunshiny afternoon! It’s been so cool to see families spending time outside together doing lawn work, playing, or eating. Some have commented it’s nice not to be torn so many directions. There’s way more people walking than I’ve seen in the past. And, several groups have found ways to help such as sewing masks for medical staff and donating various items. Those are just a few good things I’m observing right now! There’s been a variety of questions Extension is receiving as a result of COVID-19, so this column will share resources to help.
Trusted Information: While the ability to access information can be good, the overabundance of mis-information can make this time challenging. When it comes to COVID-19, we recommend obtaining information from sources such as CDC, WHO, and locally the UNMC and health departments. As you see info from various sources, be aware photos and videos are being doctored and also check the date. Before sharing, right click on a link to see where the source is coming from. Does it end in ‘.gov, .edu, .com, .net, or .org’? Those extensions tend to be more trusted than other strange endings.
Food Preparation: There’s been a renewed interest in baking bread, canning and freezing! Food.unl.edu and in particular, this website, https://food.unl.edu/article/family-food-fun-home has a number of resources based on specific questions. When prepping fruits and vegetables, it’s really important that you do not use bleach, soaps, or hand sanitizing wipes on them! These products were not designed for food and can make you sick. Wash all produce thoroughly under only running water before eating, cutting or cooking. Your hands should be properly washed with soap and water when preparing food.
Youth Learning Activities: Finding yourself needing some fun activities for your kids during this time of being at home? A number of fun, hands-on learning activities are available at the https://4h.unl.edu/virtual-home-learning website! You will see activities for youth of all ages that provide both live, recorded, and self-paced learning.
Gardening: There’s also been a renewed interest in growing gardens. A great resource developed by Gary Zoubek is the vegetable planting guide on when to plant found at: https://go.unl.edu/d7qk.
Windbreak Renovation: Continuing from last week, there’s just too much information for me to cover adequately in my news column. Instead, we have several wonderful resources and wish to point you to them! We can also provide them for you if you don’t have internet access. They contain drawings of windbreaks and photos regarding do’s and don’ts.
- Windbreak Establishment: https://nfs.unl.edu/publications/downloads/ec1764.pdf
- Windbreak Renovation: http://extensionpublications.unl.edu/assets/pdf/ec1777.pdf
- Windbreaks and Wildlife: http://extensionpublications.unl.edu/assets/pdf/ec1771.pdf
- Windbreaks for Rural Living: https://nfs.unl.edu/documents/windbreakruralliving.pdf
Recertification Information: We’ve also received a number of questions regarding pesticide, chemigation, and dicamba certification. All in person classes have been cancelled and certification can be achieved online. We realize not everyone has access to computers or good connectivity. For private applicators who are in that situation, you can also call the pesticide office 402-472-1632 and they will mail you a lesson with test to complete instead. There is no option like that for chemigation or dicamba. We need to continue to be patient as information and rules keep changing. All certification information can be found at: https://pested.unl.edu/covid-19-information.
Interested in plants and gardening? Check out this information about the Master Gardening Program from Elizabeth Killinger, UNL Extension Educator!
New blog posted at http://huskerhort.wordpress.com/ about The Nebraska Extension Master Gardener Program
Do you enjoy plants and gardening? Looking to learn more and hone your skills but don’t know where to go? The Master Gardener program will educate you on many aspects of horticulture, allow you to test your knowledge and skills, all while serving your local community.
The Nebraska Extension Master Gardener program is a horticulture related volunteer training program based in many counties throughout the state. It has been part of University of Nebraska- Lincoln (UNL) Extension since 1976. Master Gardener volunteers are trained by UNL Extension faculty and staff. They contribute time as volunteers working with their local Extension office to provide horticulture-related information to their community. Participants are required to complete 40 hours of training and 40 hours of volunteer service during the initial year of their involvement in the program. Master Gardener volunteers retain their…
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As I set here writing, we went from wearing t-shirts yesterday to receiving freezing rain and sleet today! The precipitation is much welcomed and it’s nice to see spring bulbs coming up and the grass turning green! But we’re unfortunately not out of the woods yet regarding this drought, and may not be for some time.
This Thursday, April 11, Elizabeth Killinger, UNL Extension Educator in Hall County, will be talking to us about gardening during drought. Come enjoy an evening of learning about drought-tolerant plants and ideas for your landscape! The evening begins with a light supper at 5:30 p.m. and we plan to be finished around 7:00 p.m. There will be no charge for this workshop, so please come and invite your friends and your youth who enjoy gardening as well!
Also, if you would like to bring some plants for exchange, you are welcome to do so and share with others! Please call the Clay County Extension Office at (402) 762-3644 or Jenny at firstname.lastname@example.org to let us know you’re coming so we can plan for the meal. See you then!