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GAPAC 2001 Defoliation Project Home Page

The GAPAC Defoliation Demonstration treatments, sponsored by supporting companies, represent established and emerging defoliation chemistries and combinations.  The project consists of results from five plots planned throughout the state, locations listed below.  

 

 

This year, for the first time, we welcome Bayer, FMC and Helena Chemical to the GAPAC Defoliation Demonstration Project.

 

 

These plots are located in production areas strategically located throughout the state.  This year, five consultants have each chosen a field of high yielding cotton to use for plots.

 

 

Ratings made at six days and again twelve days after treatment are published at individual plot pages and consolidated ratings are available on the summary page.

 

 

 

 

October 12, 2001
Lists available on this page
Treatment list
Location and schedule list
Plot Summary Page, containing a full summary of the ratings of all plots
Plot data pages:
  • Paul Brown, Houston County, Plot Data and Ratings.
  • Tim Kelly, Appling County, Plot  Data and Ratings.
For the third consecutive year the Georgia Association of Professional Agricultural Consultants designed a Cotton Defoliation Project to give our members a hands on evaluation of cotton defoliants on the market.  Our plots have been available for others in the cotton industry including growers, dealers, basic industry sales representatives, extension personnel and others.  Our goal is to learn more about cotton defoliation in Georgia.

This year's project, modeled after the successful 2000 project, had five locations across the state where we set up the same trial design on uniform high-yield potential cotton.  The market price for each treatment is included in the data summaries.  The cost of the project is funded through those companies entering treatments. Each location was carefully chosen for uniformity and correct stage.  Each treatment was chosen by the sponsoring company.

Kent Taylor, retired technical service representative with AgrEvo,  rated all locations at six to eight days after application and again at ten to fourteen days after application. He will collect the following data for each treatment:

  1.   Percent Defoliation

  2.  Percent Desiccation 

  3.  Percent Green Leaves

  4. Percent Boll Opening 

  5. Percent Regrowth Rating

Each location has a report generated for it, which will be shared with all of the companies that enter in the test. Kent has a summary report consolidating rating from all plots, available here.

All plots are four rows wide by 125 feet long with a two row buffer, sprayed in 10 gallons of water per acre, 3 mph with TX4 hollow cone tips at 57 PSI.

No.  Treatment (and rate per acre) Price per acre* Sponsor (click on  company name to visit official website)
# 1 Harvade @ 8 oz. + Folex @ 8 oz. + COC @ 16 oz. 8.06 Uniroyal
# 2 Harvade @ 8 oz. + Prep** @ 21.33 oz. + COC @ 16 oz. 12.39 Uniroyal
# 3 Leafless @ 12 oz. + COC @ 8 oz. 13.75 Uniroyal
# 4 Cotton Quik @ 64 oz. + Aim @ 0.67 oz.*** 16.72 Griffin LLC
# 5 Cotton Quik @ 64 oz. + Def @ 6 oz. 13.97 Griffin LLC
# 6 Cotton Quik @ 64 oz. + Freefall @  1.6 oz.*** + Aim @ 0.67 oz.*** 21.92 Griffin LLC
# 7 Def @ 10 oz. + Prep** @ 32 oz. + Dropp @ 1.6 oz.*** 18.73 Bayer
# 8 Aim @ 0.67 oz.*** + Super Boll** @ 32 oz. + Freefall @ 1.6 oz.*** + COC @ 12.8 oz.**** 19.92 FMC
# 9 Aim @ 0.67 oz.*** + Super Boll** @ 21.33 oz. + COC @ 12.8 oz.**** 11.56 FMC
# 10 Aim @ 0.67 oz.*** + Finish** @ 21.33 oz. + Freefall @ 1.6 oz.*** + COC @ 12.8 oz.**** 23.09 FMC
# 11 Aim @ 0.67 oz.*** + Finish** @ 21.33 oz. + COC @ 12.8 oz.**** 17.89 FMC
# 12 Finish @ 21.33 oz. + Dropp @ 1.6 oz.*** + Folex @ 4 oz. 19.11 Aventis
# 13 Finish @ 21.33 oz. + Ginstar @ 4 oz. 18.26 Aventis
# 14 Harvest Boost @ 16 oz.***  + Ethephon** @ 16 oz. + Ginstar @ 4 oz. 16.34 Helena

*Approximate cost per acre; actual costs will vary.

**All Prep, Super Boll, ethephon, and Finish products used in this project are 6 pound per gallon formulations.

***Aim, Freefall, Dropp, and Harvest Boost formulations are dry weight.

****COC, or Crop Oil Concentrate @ 1% v/v solution.

These are the locations and schedule for the plots.  These plots are open for viewing any time following spray date.  Click on the county name for directions to the specific plot.
County
Consultant
Grower
Spray Date
Field Day Date
Miller Wes Briggs Wes Vann Monday, Sept. 17 Monday, Sept. 24, 1 p.m.
Houston Paul Brown ABS Farms Tuesday, Sept. 18 Tuesday, Sept. 25, 11 a.m.
Appling Tim Kelly Dale Lynch Wednesday, Sept. 19 Thursday, Sept. 27, 1 p.m.
Laurens Shannon Knighton Roche Friday, Sept. 21  Friday, Sept 28, 11 a.m.
Terrell Kevin Cotton David Peavy Wednesday, Sept. 26 Wednesday, Oct. 3, 11 a.m.

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Copyright 2001, Georgia Association of Professional Agricultural Consultants