Recent Updates

Tennessee Market Highlights- 08/05/2022

Corn, soybeans, and wheat were down; cotton was mixed for the week.

Is the harvest low in for corn and soybeans?

December corn futures established a six-month low on July 22nd at $5.61 ¾. Since then, prices have increased nearly 50 cents closing the week at $6.10. Similarly, November soybeans had a six-month low, of $12.88 ½ before subsequently increasing to $14.08 ¾ on August 5th. Recent moves in futures markets and the drier/hot forecast for August in many production regions would tend to support higher prices moving forward. However, this year has been filled with volatility and abrupt changes in direction, so a challenge to current harvest lows cannot be ruled out. To give examples of the volatility, one only needs to look at the last 20 trading days. In 11 of the last 20 trading days the November soybean contract has seen daily moves of greater than 25 cents, including moves of 62 and 62.5 cents down and 37.75 and 38 cents up. For December corn, 9 of the last 20 trading days have had daily changes of greater than 10 cents, including a 42.5 cent decrease and a 19.5 cent increase). Simply stated, markets still have a tremendous amount of uncertainty and daily price swings are reflecting that uncertainty. Continue reading at Tennessee Market Highlights.

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EPA Requests Comments on Organophosphate Cancellation Petition

The EPA is soliciting public comment on a petition from several organizations to cancel remaining organophosphate (OP’s) insecticide registrations. OP’s are widely utilized in Tennessee row crop agriculture and are critical components of IPM programs. Cancelling an important crop protection product would place increased pressure on a limited number of control options available to producers.  We are encouraging agricultural professionals to comment to the EPA on the impacts OP’s have on your production systems. If you need assistance with comments please contact your UT extension specialist. The link to comment is below. Deadline for comments is August 11, 2022.

Organophosphate registrations Regulations.gov

EPA–HQ–OPP–2022–0490

 

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Bollworm/Budworm Moth Trap Catches (8/5)

Weekly Moth Trap Data
Date: 8/5
Location Bollworm Tobacco Budworm
Hardeman (Bolivar) 1 1
Fayette (Whiteville) 10 0
Fayette (Somerville) 1 0
Shelby (Millington) 12 15
Tipton (Covington) 2 0
Tipton (North) 1 0
Lauderdale (Goldust) 40 20
Haywood (West) 6 0
Haywood (Brownsville) 0 0
Madison (WTREC) 50 2
Madison (North) 3 1
Crockett (Alamo) 0 0
Crockett (Maury City) 6 10
Dyer (Kings Rd) 35 1
Dyer (Newbern) 2 0
Lake (Ridgely) 19 15
Gibson (Kenton) 30 1
Gibson (Milan REC) 0 1
Carroll (Atwood) 23 2
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The ‘shed’, the ‘switch’, and PGR management

Rainfall was welcomed during the Milan No-till event last week and has continued since, with decent chances in the forecast over the weeks to come.  Questions this week have mainly concerned our first major fruit shed event, the ‘switch’, what to do about it. In this blog, I attempt to tackle plant growth management decisions as we quickly approach our last effective bloom date.

Continue reading

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New Data on Controlling XtendFlex Volunteer Soybean in XtendFlex Cotton

Volunteer XtendFlex Soybean in XtendFlex Cotton: 2022 Lauderdale County

What are some options to control volunteer XtendFlex soybeans in XtendFlex cotton fields?  As mentioned in an earlier blog both Envoke and Staple look to be potential answers to this new issue but without data it was difficult to say.  It was brought to my attention that Dr. Alan York, emeritus Professor at North Carolina State University, actually has some data on this problem. A study was conducted in North Carolina and Georgia in 2000 and 2001 with the objective of examining if Envoke, Staple or MSMA could control Roundup Ready volunteer soybean in Roundup Ready cotton. Continue reading

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Bollworm Control in Cotton

As of this week, bollworm trap catches across West TN are beginning to increase and moths are making their way into many cotton fields.

Bollworm Moth on Cotton Leaf (Photo by D. Jones)
Bollworm Moth on Cotton Leaf (Photo by D. Jones)

UT’s threshold for dual gene cottons (Bollgard 2) is 20% of plants have eggs present. That is 2 plants out of 10 have at least one egg present. Bollworm resistance to Cry proteins is increasing across much of the Midsouth and the egg threshold doesn’t give dual gene cottons an opportunity to fail. Insecticide timing at this stage is more critical than rate. A 1.4 fl oz/a rate of Vantacor (equivalent to 16.0 fl oz/a Prevathon) or 8.0 fl oz/a rate of Besiege sprayed on egg lay will work as well as higher rates of the same products. However, if live worms (2-3 day old and older) are present in the plant canopy or have bored into bolls or squares the lighter rates of Vantacor, Besiege won’t cut it for control. Chasing worms in the plant canopy with lower rates often doesn’t end well.  Vantacor rates of 1.50 fl oz/a or 9 fl oz/a of Besiege  or higher will provide better, more consistent control on worms in the canopy.

Bollworm Moth on Cotton Flower (Photo by D. Jones)
Bollworm Moth on Cotton Flower (Photo by D. Jones)

Triple gene cottons (Bollgard 3, Widestrike 3, Twinlink Plus) have a much more robust insect package that is centered on the Vip3a toxin that does most, if not all, of the heavy lifting in controlling bollworms. The threshold for 3 gene cotton is 4 or more larvae are present per 100 plants or 6% or more fruit injury is occurring. So far, the 3 gene cottons are holding up well in West TN; however, I have experienced break through infestations in triple gene cottons under severe drought stress or fields that are at or near cutout (NAWF <5). Bt expression is often negatively affected by environmental stressors and heavy worm infestations coupled with poorly expressing Bt cotton can equal unexpected damage. We still don’t need to spray on egg lay in triple gene cottons but if worms are surviving past a day or so in 3 gene cotton, an application may be necessary. Diamides (Vantacor, Besiege, Elevest) are still the best options for worm control. Orthene plus a pyrethroid is an option but residual efficacy is limited to 5-7 days and the potential for worms to rebound is a real risk.

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Nutrient Management in Cotton During Drought Conditions

Due to the ongoing drought, I’ve recently received questions along the lines of, “how much N is still available after the prill sits on the soil surface without rain for 35 plus days?” and, “should I begin a foliar fertilizer regiment to meet plant N/K/S/B demands?”  In this blog, I tackle both of these questions and share N response curves generated from Tennessee data over the past 5 years.

“I applied urea and it didn’t rain for a month.  Will my cotton crop have the N required to make close to maximum yields?”

For growers that have applied 60-90 lb as urea, the simple answer is yes; the amount of soil nitrate released from the urea you applied will likely meet cotton N demand without additional N fertilizers given plant available water increases significantly in the coming week. Generally, if surface applied urea fertilizer is not incorporated into the soil, some of the N may be lost as ammonia into the atmosphere depending on weather, soil properties and management practices. Continue reading

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Farm Management During Uncertain Times Series

The UT Center of Farm Management will be hosting an upcoming program titled “Farm Management During Uncertain Times.” The program will include a series of “town-hall meetings” via Zoom as well as a library of recorded videos (available August 9th) that producers can access any time. The goal of this series is to provide resources and information to help producers make informed decisions as they navigate the uncertainty of production during drought, rising interest rates, and other current events. Please register at the link below to receive the webinar information for the town-hall meetings. The series is free and accessible to any producer interested.

Register Here: https://tiny.utk.edu/FarmManagementSeries

If you have any questions, please contact Tori Marshall at (615) 374-1283 or tmarsh21@utk.edu.

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