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Tennessee Weather and Crop Progress Update

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SCATTERED RAIN AND THUNDERSHOWERS SLOW HAY HARVEST

Remnants of Hurricane turned Tropical Storm Barry brought rain and thunderstorms to the State, especially West Tennessee. The rains were slow to or did not run-off bottom land but improved conditions of crops planted on higher ground. Though the hay crop is ready for another cutting, rains kept producers out of the field waiting for more favorable conditions. Crop spraying occurred as weather permitted. Some tobacco was topped and sucker control applied. The rain, combined with sometimes oppressive heat, helped pastures but
kept cattle in search of shaded areas. There were only 3.8 days suitable for field work. Topsoil moisture was rated 1 percent very short, 8 percent short, 70 percent adequate, and 21 percent surplus. Subsoil moisture was rated 1 percent very short, 7 percent short, 77 percent adequate, and 15 percent surplus.  You can read the entire Tennessee Crop Weather report at: TN Crop Weather 07_22_19. You can also read the latest national crop progress report at: US Crop Progress 07_22_2019.

 

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Cotton response to saturated soils in West TN

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Authors: Avat Shekoofa and Tyson Raper

Reports of ‘sudden wilt’, ‘parawilt’, or ‘wet wilt’ began Wednesday afternoon and continued through Thursday. This article briefly explains the phenomena and discusses management during recovery. 

Fig. 1: Prolonged periods of saturation resulted in wilt in many areas of West Tennessee following Hurricane Barry. 18 July 2019

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Crunch Time for Cotton Insects

The 3-4 weeks after first bloom, and typically the last two weeks of July and the first two weeks of August, is a critical window to scout and manage insect pests. This is when we are setting the bolls that will contribute most to yield, and it’s also a time insects are most attracted to the crop (with plenty of susceptible fruiting structures to feed on). Most of the comments in this article will focus on plant bug and stink bug management. However, bollworm management will become a bigger factor by the end of the month. I’ll hit on that topic Continue reading

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Dicamba Tank mixing with Glyphosate and/or Clethodim Effect on Junglrice Control

Xtend Cotton in a Junglerice field

The call of the spring and now well into the summer is on failed attempts to control junglerice and goosegrass in Xtend crops. The most recent rash of calls have been from very frustrated folks who have not controlled one of those grass species even after three applications of glyphosate and/or clethodim. Most of these failed applications are coming from tank mixing Engenia or XtendiMax in the tank with either glyphosate, clethodim, or both. Continue reading

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Reminder – Soybean Scout School This Week (7/17) in Dyersburg

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UT’s Soybean Scout Schools will be held in July (see below). These field-side programs cover the basics of soybean growth, scouting, pest identification, and general management. Pesticide recertification and CCA CEU points will be available. Scout Schools are offered free of charge with sponsorship from the Tennessee Soybean Promotion Board. Registration is not required. Participants will receive a scouting notebook and a sweep net while supplies last. Continue reading

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Control Options for Prickly Sida that has Escaped Engenia or XtendiMax and Glyphosate

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Prickly Sida and Palmer amaranth escaping 22 oz of XtendiMax and 32 oz Roundup PM picture taken 28 DAA

There have been a good number of calls reporting poor prickly sida (teaweed) control with Engenia or XtendiMax tankmixed with Roundup PM.  I have seen prickly sida escape dicamba tankmixed with glyphosate in some research here at the station as well.   This appears to have been a building problem as I recall similar, though fewer, calls last year.  The lack of prickly sida control in the Xtend system has been building a seed bank that is apparently showing up in many fields this year. Continue reading

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