Category Archives: Soybean

29 May 2023

Crunch Time for Weed Control

29 May 2023
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Picture 1. Goosegrass escaping multiple glyphosate applications. Tipton County. Mid-June 2022

As the calendar turns to June weed management concerns change from ryegrass and horseweed to the summer annuals goosegrass, junglerice and Palmer amaranth.

Tennessee growers are in a real crunch time to control these three summer annual weeds. Big percentages of the corn, soybean and cotton crops all need some kind of POST application right now. The planter technology that can plant three different crops across large acreages very quickly has one drawback. The sprayers often cannot keep up to most every acre needing to be sprayed just as quickly. Continue reading →

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25 May 2023

Herbicide Stewardship

25 May 2023
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It is crunch time for weed control in our row crops.  When every minute counts to get herbicide applied it is tempting to cut corners on herbicide stewardship.  The forecast would suggest that Tennessee will be entering a bit of a dry spell.  Herbicide drift is even harder for crops to recover from when drought stressed so please take time to use best management practices applying all herbicides but particularly products that contain dicamba and 2,4-D. Continue reading →

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16 May 2023

Corn and Soybean Tolerance to Flooding and Submergence

16 May 2023
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Excessive rainfall over the weekend (5/12 and 5/13) in the North Western river counties has resulted in several calls this week concerning flooding and standing water in corn and to a lesser extent in soybean. Crop response will depend on the length of time the crop remains submerged and varies between corn and soybean. With rain still in the forecast for the next few days, here are a few agronomic considerations to be aware of. Continue reading →

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16 May 2023

Ryegrass Issues Persist and Johnsongrass Management

16 May 2023
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Ryegrass Infestation in Corn

Ryegrass infestations still persist in some fields.  In cotton and soybeans, clethodim can be used now to push this weed on to maturity. In corn, other than just going out and spraying the typical POST corn premix and hoping that pushes the ryegrass on to maturity there is no real solution to controlling it. Continue reading →

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15 May 2023

Nutrient Deficiency – Nitrogen

15 May 2023
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This is the first of several installments dealing with commonly observed nutrient deficiencies in corn and soybean.  Each week, a new macro or micro nutrient will be posted and discussed. The main objective of this series will be to discuss for each nutrient: (1) visual symptomology of deficiency, (2) plant and leaf tissue deficiency levels, (3) common causes of deficiency, and (4) in-season corrective measures. Continue reading →

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01 May 2023

2023 Soybean Replant Decisions

01 May 2023
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Soybean replanting decisions are almost always a tough call and a subjective decision.  In 2023, favorable planting conditions in late March and early April have resulted in quite a few acres being planted.  As we head into the month of May, let’s take a look at some objective factors that can help inform replant decisions. Continue reading →

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30 Apr 2023

Mitigating Potential Herbicide Mixing Issues

30 Apr 2023
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This time of year as we move to burndown behind the planter we typically get some reports of mixing issues when either glyphosate or Gramoxone is added to the tank with residual herbicides like atrazine, metribuzin, Cotoran, Caparol, fomesafen or a pyroxasulfone containing product.  What happens is the white herbicides will often clabber up and stop up screens and strainers in the sprayer. Continue reading →

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