Table 1. Rotation restrictions of several corn and soybean herbicides to cover crops and/or fall forage crops producers may be considering following crop failure due to drought. Crops not listed on label are given max rotation and typically require a successful bioassay. Always refer to label for more details. | ||||||||||||||
Annual Ryegrass |
Wheat | Clover | Vetch | Radish | Oats | Cowpea | Buckwheat | Alfalfa | Forage Sorghum |
Pearl Millet |
Max Rotation |
Comments | ||
Corn Herbicides | ------------------------Replant Interval (Months)------------------------ | |||||||||||||
Atrazine | NY | NY | NY | NY | NY | NY | NY | NY | NY | 0 | NY | 30 | NY=Next Year. If applied after June 10th, do not plant the following year. Info taken from Aatrex label. | |
Balance Flexx | 18 | 4 | 18 | 18 | 18 | 18 | 18 | 18 | 10 | 6 | 18 | 18 | 15 inches of cumulative precipitation from application to planting of rotational crop required for all except sorghum and wheat | |
Callisto | N/A | 4 | 18 | 18 | 18 | 0 | 18 | 18 | 10 | 0 | 0 | 18 | Grasses grown for seed can be planted immediately, but annual ryegrass is not directly addressed | |
Capreno | 18 | 4 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 10 | 18 | 18 | Sorghum rotation should be delayed to 18 months if total seasonal rate of Capreno herbicide exceeds 3 fl oz/A. Sorghum rotation requires at least 15 inches of precipitation, all other rotations excluding wheat require 30 inches of precipitation. | |
Corvus | 17 | 4 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | For all rotation crops except wheat a minimum of 30 inches of precipitation is required. | |
Impact | N/A | 3 | 18 | 18 | 18 | 3 | 18 | 18 | 9 | 9 | 18 | 18 | Grasses grown for seed can be planted three months after application, but annual ryegrass is not directly addressed | |
Laudis | 18 | 4 | 18 | 18 | 18 | 4 | 10 | 18 | 10 | 10 | 18 | 18 | Grass grown for seed listed at 4 months, but annual ryegrass not mentioned specifically | |
Lumax/Lexar | 18 | 4.5/NS | 18 | 18 | 18 | NS | 18 | 18 | 18 | 0 | 18 | 18 | NS=The next spring following application | |
Status | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | Alfalfa, wheat, oats, and forage sorghum can be planted 30 days following last Status application of 5 oz/A or less if at least 1" of rainfall or irrigation is received. | |
SureStart/TripleFlex | 26 | 4 | NS | NS | 26 | NS | NS | 26 | NS | 12 | 26 | 26 | NS=The next spring following application. | |
Verdict | NS | 4 | NS | NS | NS | 4 | NS | NS | NS | 0 | NS | NS | NS=The next spring following application | |
Soybean Herbicides | ||||||||||||||
Authority First/Sonic | 30 | 4 | 30 | 30 | 30 | 12 | 12 | 30 | 12 | 12 | 30 | 30 | ||
Authority MTZ | 18 | 4 | 18 | 18 | 18 | 18 | 18 | 18 | 12 | 18 | 18 | 18 | Sorghum can be planted after 12 months if Authority MTZ was applied at 20 oz/A or less | |
Canopy | 4 | 4 | 12 | 30 | 30 | 30 | 12 | 30 | 10 | 12 | 30 | 30 | ||
Classic | 3 | 3 | 12 | 30 | 30 | 3 | 9 | 30 | 12 | 9 | 30 | 30 | ||
Extreme | 40 | 3 | 4 | 40 | 40 | 18 | 0 | 40 | 4 | 18 | 40 | 40 | ||
Firstrate | 18 | 4 | 18 | 18 | 18 | 9 | 9 | 18 | 9 | 9 | 18 | 18 | ||
Optill PRO | 40 | 4 | 9 | 40 | 40 | 18 | 4 | 40 | 9 | 18 | 40 | 40 | ||
Valor XLT | 4 | 4 | 18 | 30 | 30 | 30 | 12 | 30 | 12 | 10 | 30 | 30 | ||
Corn and Soybean | ||||||||||||||
Dual II Magnum | 12 | 4.5 | 9 | 0 | 0 | 4.5 | 0 | NS | 4 | 0 | 12 | 12 | To avoid injury in clover, do not apply more than 1.9 lb ai/A (2 lb/A) in previous crop | |
Warrant | NL | 4 | 9 | 9 | NL | NS | NS | NS | 9 | 0 | NS | NL | NS= Next season, NL=Not listed on Label |