1. Management of Digitaria insularis in soybean pre-sowing desiccation by ACCase alternative herbicides and its impact on soybean carryover.
- Author
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Palharani, Waggner, Mauad, Munir, da Silva, Paulo Vinicius, de Medeiros, Elias Silva, Schedenffeldt, Bruna Ferrari, and Bicalho Medeiros, Carolina Cristina
- Subjects
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GLUFOSINATE , *HERBICIDES , *GLYPHOSATE , *ATRAZINE , *CRABGRASS , *ACETOLACTATE synthase , *SOYBEAN , *WEEDS , *AMARANTHUS palmeri - Abstract
The objective of this study was to evaluate the use of alternative herbicides to ACCase inhibitors to control Digitaria insularis (sourgrass) during pre-sowing soybean desiccation. Two field experiments were conducted with two temporal replicates under different climatic conditions, with the following treatments: imazethapyr + glyphosate, clethodim + fluroxypyr, chlorimuron + glyphosate, imazapic + imazapyr, mesotrione + atrazine + glyphosate, tembotrione + atrazine + glyphosate, nicosulfuron + atrazine and imazamox + glyphosate, all of which were composed of a sequential application of glufosinate ammonium. The water stress conditions in experiment 1 compromised the efficacy of acetolactate synthase enzyme (ALS) inhibitor herbicides in the control of sourgrass. Even under water restriction conditions, the treatments containing mesotrione + atrazine + glyphosate and tembotrione + atrazine + glyphosate provided control greater than 80%. In experiment 2, the combination of ALS inhibitors with glyphosate proved to be a great alternative for the management of sourgrass control. All treatments showed no significant phytotoxicity in soybean for either experiment. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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