Evaluation of Alternative Management Options for Gray Mold on Field Grown Raspberries
DOI:
https://doi.org/10.71318/apom.2011.65.2.39Abstract
Fungicides are commonly used for managing gray mold of raspberries ( Rubus ideaus) caused by Botrytis cinerea.In 2006-07, we studied the efficacy of MilStop (potassium bicarbonate), Endorse (polyoxin D zinc salt), lime sulfur (calcium polysulfide), Phostrol (mono- and dibasic-sodium, potassium, and ammonium phosphates), and tank mixtures of Oxidate (hydrogen dioxide) and MilStop combined, Oxidate and Vigor Cal Phos (phosphorous salts of calcium and copper) combined and Shemer ( Metschnikowia fruitcola) and MilStop combined (2007 only) for managing gray mold. Phostrol resulted in the highest phytotoxicity. Rotating Captan (captan) and Elevate (fenhexamid), a commercial standard, was the most effective for yield and in-season gray mold management. Generally no material was more effective for postharvest gray mold management than spraying water on the plants. Applying these treatments generally provided no yield benefit or control of gray mold.
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