THE EFFECT OF SOME HERBICIDES ON THE EDAFIC MESOFAUNA IN BROAD BEAN CULTURE, IN THE ECOLOGICAL CONDITIONS OF THE NORTH OF THE COUNTRY
DOI:
https://doi.org/10.1199/abt03688Keywords:
edaphic mesofauna, Vicia fabaAbstract
The research was carried out at SCDA Suceava, in the pedoclimatic conditions of the Pojorâta Center during 2020-2021, on a lithic alluvial soil, located on the first terrace of the Moldova River, at an altitude of 700 m. One of the main factors in this experience was the use of a xenobiotic product, called Dual Gold 960 EC, herbicide from the IV th toxicity group and its implications on the microbiological activity of the soil. Regarding the edaphic micro arthropod communities, no significant quantitative differences were observed between the studied variants. The only changes found refer to the trophic structure of the edaphic micro arthropod community, both through the disappearance of phytophagous groups, whose sources have been reduced as a result of the removal of weeds, and through the decrease in the percentage of participation of predators, until their total disappearance, groups with increased sensitivity to chemicals. From the analysis of the numerical ratio between the two groups of microarthropod mesofauna analyzed, an increased numerical dominance of detritomicrophytophages emerges in all variants studied compared to the group of zoophagous, which suggests a negative influence of the herbicide on zoophagous where in the variant treated with the maximum herbicide dose, applied after the emergence of broad bean plants, zoophagous are completely absent.References
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