POST APPLICATIONS OF S-METOLACHLOR (DUAL MAGNUM) IN WATERMELONS
Applied Research
Tucker Price
County Extension Coordinator
University of Georgia
Adel
Abstract
\r\n Weed control is critical to maximize watermelon production and to produce quality fruit. S-metolachlor (Dual Magnum) could fit into a watermelon herbicide program as it is an effective tool for managing problematic weeds such as pigweed and select grasses. A study was conducted in Crisp County to evaluate watermelon response to S-metolachlor. Watermelons were transplanted into bareground or mulch (flat bed) production systems and treated with S-metolachlor applied topically at 12 or 24 ounces per acre. Both rates of S-metolachlor were applied immediately after transplanting as well as 3, 6, 9, and 12 days after. Treatments were replicated four times and a non-treated control in both production systems was included for comparison. Topical applications of S-metolachlor at 12 and 24 ounces per acre injured melons as much as 80%. Injury included un-acceptable vine stunting and delayed growth regardless of application timing, rate of herbicide, or production system (bareground/mulch) when compared to the non-treated control. Additional efforts will investigate the potential for using S-metolachlor as a row middle application which may improve control of problematic weeds without harming the crop.
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Poster has NOT been presented at any previous NACAA AM/PIC
This poster is being submitted for judging. It will be displayed at the AM/PIC if not selected as a State winner. The abstract will be published in the proceedings.
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Authors: T. Price, A. S. Culpepper
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Price, T. Extension Agent, University of Georgia Cooperative Extension, Crisp County, Cordele, Georgia 31015, Georgia, 31015
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Culpepper, A. Extension Agronomist, Weed Science, Department of Crop and Soil Science, Georgia, 31793