Pre-harvest interval drops for Warrior/Zeon in soybean

Editor’s note: This article is from the archives of the MSU Crop Advisory Team Alerts. Check the label of any pesticide referenced to ensure your use is included.

Syngenta just announced a reduction in the pre-harvest interval (PHI) for Warrior w/ Zeon Technology on soybeans only. The new PHI is 30 days, compared to 45 days. This change is particularly important for soybean aphid control. The recommended rates remain the same:

Soybean aphid, bean leaf beetle, cutworm, caterpillar species: 1.92 to 3.2 oz/ acre

Armyworm, stink bugs, grasshopper, etc: 3.2 to 3.84 oz/ acre

Spider mite = 3.84 oz/ acre

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