Nezāļu mehāniskā ierobežošana kā iespēja samazināt pesticīdu lietošanas intensitāti lauka pupu sējumos | Implementing mechanical weed control to reduce herbicide use in faba bean
2021
Putniece, G., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Agriculture. Inst. of Soil and Plant Sciences | Sanzarevska, R., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Faculty of Agriculture. Inst. of Soil and Plant Sciences | Necajeva, J., Latvia Univ. of Life Sciences and Technologies, Jelgava (Latvia). Research Inst. of Plant Protection “Agrihorts”
The need to reduce pesticide use is a pressing issue in the EU countries. One of the alternatives of herbicides is mechanical weed control. It is suitable for organic farms, but, as regards integrated farms, it can be combined with the use of herbicides reducing the overall intensity of herbicide use in the farm. This investigation compared a weed control practice with field herbicides applied in autumn and spring, and reduced herbicide application where mechanical weed control was implemented in spring. In all treatments, the composition of weed species and the number of weeds before and after treatment, as well as the fresh and dry mass of weeds after the last weed control treatment were determined. The number of weeds and the predominant species were influenced by the tillage method as well as the weed control method. The effectiveness of the mechanical control depended on the species of the weed: the control of field pansy (Viola arvensis) was more effective compared to volunteer oilseed rape (Brassica napus) and common lamb’s quarter (Chenopodium album). During the further investigation, the effects of meteorological conditions and other possible factors on the effectiveness of mechanical weed control in general and on specific weed species in particular must be determined.
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