We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Spray drift potential of dicamba plus S‐metolachlor formulations.
- Authors
Canella Vieira, Bruno; Sousa Alves, Guilherme; Vukoja, Barbara; Velho, Vinicius; Zaric, Milos; Houston, Trenton W; Fritz, Bradley K; Kruger, Greg R
- Abstract
BACKGROUND: Early‐postemergence herbicide applications in the USA often include residual herbicides such as S‐metolachlor to suppress late late‐emerging Amaranthus spp. Although this practice benefits weed control, herbicide tankmixes can influence spray droplet size and drift potential during applications. The addition of S‐metolachlor products to dicamba spray solutions generally decreases spray droplet size and increases spray drift potential. Advances in formulation technology fostered the development of products with reduced spray drift potential, especially for herbicide premixes containing multiple active ingredients. The objective of this study was to compare the drift potential of a novel dicamba plus S‐metolachlor premix formulation (capsule suspension) against a tankmix containing dicamba (soluble liquid) and S‐metolachlor (emulsifiable concentrate) using different venturi nozzles. RESULTS: The MUG nozzle had greater DV0.5 (1128.6 μm) compared to the ULDM (930.3 μm), TDXL‐D (872.9 μm), and TTI nozzles (854.8 μm). The premix formulation had greater DV0.5 (971.0 μm) compared to the tankmix (922.3 μm). Nozzle influenced spray drift deposition (P < 0.0001) and soybean biomass reduction (P = 0.0465). Herbicide formulation influenced spray drift deposition (P < 0.0001), and biomass reduction of soybean (P < 0.0001) and cotton (P = 0.0479). The novel capsule suspension formulation (premix) of dicamba plus S‐metolachlor had reduced area under the drift curve (AUDC) (577.6) compared to the tankmix (913.7). Applications using the MUG nozzle reduced AUDC (459.9) compared to the other venturi nozzles (ranging from 677.4 to 1141.7). CONCLUSION: Study results evidence that advances in pesticide formulation can improve pesticide drift mitigation. © 2021 Society of Chemical Industry.
- Subjects
SOCIETY of Chemical Industry (Great Britain); SPRAY droplet drift; DICAMBA; HERBICIDE application; SPRAYING &; dusting in agriculture; WEED control; SPRAY nozzles; HERBICIDES
- Publication
Pest Management Science, 2022, Vol 78, Issue 4, p1538
- ISSN
1526-498X
- Publication type
Article
- DOI
10.1002/ps.6772