In Tennessee, corn harvest is beginning and soybeans will be right around the corner. Time to start talking about cover crops, in particular, what options are best for your cropping system. Cover crops offer many benefits to cash crop systems, including weed suppression, nutrient credits, improved soil health, pollinator habitat, and more. Many species can be used as cover crops but each differs in the ecological benefits it can provide to a system as well as in its adaptation to production regions in Tennessee. This adaption is highly dependent on management practices, especially time of planting. A species selected as a top performer when planted after corn may not do so well in a system following soybeans, where cover crop planting is two to four weeks later. Planting a poorly adapted species reduces your return on investment in a cover cropping system, so let’s talk about what works in Tennessee. Continue reading
Category Archives: Soybean
Some considerations for soybean harvest aids
While the majority of soybeans are harvested without the benefit of a harvest aid, there are a few situations where they make sense. Using the right product in the right field at the right timing is key to achieving enhanced dry down without impacting seed quality. Continue reading
Terminating Irrigation in Soybeans
As May planted soybeans are approaching full seed, I have received several calls about terminating irrigation. Since this has been a hotter year than the past few years, there is some concern that if water is shut off too early, we may give up some yield. Continue reading
Insect Control … last week for cotton … not so much for soybean
Cotton – Even for our latest cotton, given an average frost date of around October 15, this is the last week you can likely justify insecticide applications to cotton. Based on average historical temperatures, the last effective bloom date was two week ago. A late flurry of bollworm moth activity has forced some sprays this week, and most folks are electing to Continue reading
Reports of Palmer Amaranth Escapes in Xtend Crops Continue to Mount
I was thinking it might be 2021 or at least 2020 before we would start getting reports of Xtend soybean fields that were wrapped up with Palmer amaranth. Wrong! It is 2019. I visited several soybean fields this week where, judging by the Palmer amaranth regrowth, Engenia had been applied to Palmer that was 2 to 6″ tall (Picture 1). A small percentage died and the rest went on to over run several Xtend soybean fields (Picture 2). In another field a follow-up Engenia application was made and it did improve the pigweed control some but the field was still far from being a success story. Continue reading
Managing Corn Earworm in Soybean
Despite a relatively lack luster moth flight, corn earworms (a.k.a. bollworm or soybean podworm) are showing up in some late maturing soybean fields, and as usual the action in centered in the river bottom. The treatment threshold for corn earworm is based on sweep net sampling and using the table below. Continue reading
Insect Calls of the Week (August 1, 2019)
I don’t think I have had a call about soybean all week, but my observations suggest we need to be scouting for stink bugs in our earliest beans, and in some areas, kudzu bugs. Thus far, caterpillar infestations have been very light. As the bollworm flight increases, closely scout for corn earworm in Continue reading
Field Days – Water Management and Sensor Demonstration for Soybean (Next Week)
A field tours of water management and sensor demonstrations in soybean are planned for nest week (see below). Please navigate to the following page for more details about times, locations and registration information – https://ag.tennessee.edu/BESS/Pages/Sensor-Comparison.aspx.
- July 30 – West TN Research and Education Center (field tour and in-service training)
- August 1 – Weakley Co. (sensor demonstration)
- August 2 – Fayette/Hardeman Co. (sensor demonstration)