Seminole Crop E News

Agricultural News for Farmers and Agribusiness in SW Georgia

Gramoxone/Reflex Herbicide Tank-Mixtures

Posted by romeethredge on February 7, 2013

Over the last few years, growers have experienced a few problems when tank-mixing the herbicides, Gramoxone (paraquat) + Reflex (fomesafen).  Dr. Eric Prostko, UGA Extension Weed Scientist, gives us this advice concerning this problem.

 In order to prevent these potential compatibility problems, consider the following recommendations developed by Syngenta:

1) When tank-mixing Gramoxone and Reflex, use a non-ionic surfactant (NIS) that contains a minimum of 80% active ingredient.

2) With spray volumes of 10 GPA or more, use NIS at 2 qt/100 gal (0.5% v/v).

Use 1 gal/100 gal (1% v/v) when spraying less than 10 GPA.

3) Mix chemicals in the following order:

     a) Add half of the required amount of clean water to the spray tank.

     b) Start the sprayer agitation system and continue agitation throughout mixing and spraying.

     c) Add the required amount of non-ionic surfactant to the spray tank.

     d) Add the required amount of Reflex to the spray tank.

     e) Add the required amount of Gramoxone brands to the spray tank.

     f) Add the remaining amount of clean water to the spray tank.

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