Survey of major fungicides and insecticides sold by the agricultural and animal production stores of Bento Gonçalves for use in vine culture

Abstract

The vine is a culture in expansion in Brazil and Rio Grande do Sul State comprises the largest area planted with the crop. The vine is subject to attacks by numerous pathogens and pests, and plant protection treatments up to 30% of the production cost. Several studies are performed with the purpose to find alternative control, but the main method used is still the chemical control. Thus, the objective of this work was a survey the main fungicides and insecticides sold in agricultural and animal production stores of Bento Gonçalves city, Rio Grande do Sul State, Brazil, suitable for the vine culture in 2013. It was performed the survey in agricultural and animal production stores in 2014, with the completion of interviews, with a total of six agricultural and animal production stores consulted. The analyzes were performed by calculating the absolute and relative frequencies of the most marketed fungicides and insecticides associated to the main phytosanitary problems of the vine and the toxicological and environmental classes. All mentioned fungicides are registered for the vine culture and are used for the control of Plasmopara viticola, causing the mildew. In relation to insecticides, not all which were cited are registered, being a serious problem in the matter of residues in fruits. Most cited product belongs to toxicity class III and environmental class II. Among the products listed, the organophosphates and pyrethroid insecticides are not selective to natural enemies, and neonicotinoids are highly toxic to bees.