Category Archives: Soybean

Cover Crop Species Selection for Tennessee Corn and Soybean Systems

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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

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Insect Control … last week for cotton … not so much for soybean

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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

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Reports of Palmer Amaranth Escapes in Xtend Crops Continue to Mount

(Picture 2) Xtend soybeans wrapped Up with Palmer amaranth that escaped Engenia + Roundup PM + Warrant
(Picture 1) Shortened branch 2nd from right was original apical meristem…. It was 4″ tall and never re-grew after Engenia applicaton

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

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Insect Calls of the Week (August 1, 2019)

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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

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Field Days – Water Management and Sensor Demonstration for Soybean (Next Week)

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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)

 

 

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