Agronomy eUpdate July 24th, 2020

Issue 811

Critical timing in Kansas: High temperatures and corn development

Recent high temperatures occurred at a particularly critical period for the Kansas corn crop. Temperatures last week were unfavorable for a significant portion of Kansas. Heat stress during critical stages could lead to yield reductions.

corn high temperatures corn development 

Learn how to estimate corn yield potential

Once tasseling, silking, and pollination are complete, or nearly complete, producers can begin to estimate corn yield potential. To get a reasonable yield estimate, corn should be in the milk, dough, or dent stage. Learn how to get an early estimate of yield potential in this article.

corn yield potential yield estimates 

In-season Palmer amaranth control in grain sorghum

With adequate moisture and high temperatures, Palmer amaranth populations are rapidly growing and causing concern for some sorghum producers in western Kansas. What options to growers have at this point in the growing season? Read more in the article from weed scientist Dr. Vipan Kumar.

grain sorghum weed control palmer amaranth post-emergence 

New cover crop publication discusses planting cereal rye after corn harvest

As a cover crop, cereal rye can be part of an effective weed management program in soybean production. A new publication from K-State and the Midwest Cover Crop Council provides helpful information for producers looking to incorporate a cereal rye cover crop following corn harvest.

cover crops cereal rye weed suppression water conservation 

Updated 2020 Wheat Variety Disease and Insect Rating publication

Variety selection is one of the most important decisions that a grower can make to ensure success on their farm. The Wheat Variety Disease and Insect Ratings 2020 publication, from K-State Research and Extension, has now been released for this year. Keep this resource handy when making planting decisions.

wheat insects disease variety selection 

2019 Kansas Summer Annual Forage Hay and Silage Variety Trial final report

In 2019, summer annual forage variety trials were conducted across Kansas near Garden City, Hays, and Scandia. All sites evaluated hay and silage entries. A total of 95 hay varieties, 99 sorghum silage varieties, and 12 corn silage varieties were evaluated. The full report is now available online.

hay silage variety selection summer annual forage