Analysis of the ecological sustainability of different weed management strategies in oilseed flax (Linum usitatissimum L.) crop in Argentina
Flax is cultivated according to a model productivist approach highly dependent of external inputs that has caused serious ecological problems. Among them are those associated with weeds whose control, is mainly carried out with herbicides. Given this reality, it is necessary to incorporate weed management strategies that improve the sustainability of agroecosystems. The ecological sustainability of weed control with herbicide was compared with respect to the management with high flax density, and /or intercropping with Trifolium pratense L. In this study some indicators were adjusted and applied such as: plant diversity, % soil covering, remaining residue, dry matter returned to the soil, % of residual residue, use of herbicide, nitrogen balance, energy efficiency and plant biomass. The methodology was adequate and easy to apply to the objective of the study. The analysis using indicators shows that herbicide weed control on flax was the practice with the least contribution to sustainability. Intercropping was ecologically more sustainable than monoculture with more favorable points for sustainability without using herbicide, regardless of flax density. This occurred due to a better conservation of productive capacity of the agroecosystem and for having a lesser impact on the external environment. From this study it emerges that intercropping with red clover is alternative management to herbicides control for weed control in flax.
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Facultad de Ciencias Agrarias y Forestales de la Universidad Nacional de La Plata
2021
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| Online Access: | https://revistas.unlp.edu.ar/revagro/article/view/16699513e082 |
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