Buffer Zones for 2,4-D Applications Nearby Tobacco Fields

نویسندگان

چکیده

ABSTRACT: An increase in 2,4-D use is expected as tolerant crops have been approved to Brazil, which may negatively affect important such tobacco. Our objective was determine safe distances between applications and tobacco fields considering herbicide contamination the harvested product. A field experiment conducted, consisting of a application done perpendicularly wind direction, using tractor sprayer. Drifted collected plants placed at various points (-50 up 400 meters from zone), following three schemes: a) 0 0.5 hours after (HAT); b) 24 HAT; c) HAT. Environmental conditions were recorded. Herbicide leaves quantified. Drift detected 200 m both years. Vapor movement strip 2016, on taken application. 2015 favored off-target (higher speed air temperature lower humidity); although, 2016 traveled further due wet deposition. These results indicated that 100-meter buffer zone enough significantly decrease chances above tolerated threshold, highlighted importance environmental transport processes for under conditions.

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ژورنال

عنوان ژورنال: Ciencia Rural

سال: 2022

ISSN: ['1678-4596', '0103-8478']

DOI: https://doi.org/10.1590/0103-8478cr20210350