Weed management practices in Argentina crops

Data from surveys are used to help quantitatively diagnose the relative importance of chemical and nonchemical management practices, identify weed problems, and provide potential solutions. However, to our knowledge, such surveys have not been conducted in Argentina. In 2016, advisors and crop produ...

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Bibliographic Details
Published in:Weed technology 2019-06, Vol.33 (3), p.459-463
Main Authors: Scursoni, Julio Alejandro, Vera, Alejandra Carolina Duarte, Oreja, Fernando Hugo, Kruk, Betina Claudia, Fuente, Elba Beatriz de la
Format: Article
Language:English
Subjects:
Advisors
Agricultural practices
Agricultural production
Chemical control
Corn
Crop production
Crop rotation
Crops
Cultivars
cultural practices
Dependence
EDUCATION/EXTENSION
Farmers
Genetically altered foods
Herbicides
Management
Management decisions
Organic chemistry
Polls & surveys
problematic weeds
Questionnaires
Row spacing
Seeds
Soybeans
Survey
Weed control
Weeds
Wheat
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Summary:Data from surveys are used to help quantitatively diagnose the relative importance of chemical and nonchemical management practices, identify weed problems, and provide potential solutions. However, to our knowledge, such surveys have not been conducted in Argentina. In 2016, advisors and crop producers from cropping areas across Argentina were surveyed through email with the objectives to identify the main weed species problems and assess the use of chemical and nonchemical weed management practices in different crop production areas in Argentina. Fleabane, pigweed, johnsongrass, fingergrass, goosegrass, barnyardgrass, and ryegrass were considered the most important weeds. More than 53% of the producers used only chemical options; 86% used chemical fallow (i.e., keeping weed free with chemical application); 62% used full herbicide rates; 46% used proper herbicide timing; 41% used multiple modes of action; and 32% used rotation of herbicide modes of action. The main nonchemical practices used were crop rotation (45%); avoiding seed production during (31%) and after (25%) the crop cycle; narrow row spacing (19%); and cultivars with greater competitive ability (18%). Less than 15% of the people surveyed used increased crop densities or altered date of sowing. There is a high dependence on chemical control in the main crops grown in Argentina. Extension efforts are needed to emphasize the importance of integrated weed management.
ISSN:0890-037X
1550-2740
1550-2740
DOI:10.1017/wet.2019.26