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After using which herbicides can you not plant sunflowers in the following crop
If Pursuit (imazethapyr, imazethapyr acid) was used on the previous crop, there must be an interval of 18 months before planting sunflowers; for chlorimuron-ethyl (chlorimuron) there must be an interval of 18 months before planting sunflowers; if the per-hectare rate of nicosulfuron exceeds 60 grams of active ingredient, that is, more than 100 milliliters per mu of 4% nicosulfuron, there must be an interval of 24 months before planting...