Adsorption and Degradation of Three Pesticides in a Vineyard Soil and in an Organic Biomix

Environments

Costantino Vischetti¹  Cristiano Casucci¹  Arianna De Bernardi¹  Elga Monaci¹  Alessandra Cardinali² 

[1] Department of Agricultural, Food and Environmental Sciences, Marche Polytechnic University, via Brecce Bianche 10, 60131 Ancona, Italy;Department of Agronomy, Food, Natural Resources, Animals and the Environment, University of Padova, viale dell’Università 16, 35020 Legnaro, Italy;

关键词: pesticides;    adsorption;    degradation;    organic biomix;   

DOI  :  10.3390/environments7120113

来源: DOAJ

【 摘 要 】

A soil and an organic biomix (soil/vine branch/garden compost 20/40/40) were used in this lab experiment to evaluate adsorption and degradation parameters for three pesticides (chlorpyrifos, metalaxyl and cymoxanil) used in a vineyard. Adsorption in the biomix material was higher than in the soil for the three pesticides and chlorpyrifos was the most adsorbed pesticide. The role of the organic carbon is essential for enhancing the adsortion of the three pesticides, especially for the most apolar chlorpyrifos. Degradation was generally faster in the biomix material than in the soil although the process was slower in the case of chlorpyrifos if compared with the other two chemicals, due to a more toxic effect of this pesticide on soil microflora and a larger adsorption of this pesticide on the organic biomix that reduces its availability for dissipation. Amendment with cheap and available organic wastes or a grass-covered management of soil in the vineyard could reduce the impact of pesticides in the vineyard ecosystem and contribute to the sustainable management of chemicals in the environment.

【 授权许可】

Unknown