Quarantine treatments of fresh vegetables and flower cuts against the western flower thrips

Abstract

Goal. Minimization of methane bromide consumption rates in mixtures with carbon dioxide in saturated vapor and supercritical fluid states, under conditions of 100 %technical efficiency, against the western flower thrips in fresh vegetable and flower-decorative products.
 Methods. The following methods were used in the research: the analysis of knowledge systems in the field of physics, chemistry and biology, necessary in the sphere of fumigation; analogies (modeling), namely the application of fumigation parameters to species with similar morphological and biological features; study of scientific sources (paper and electronic), literary monographs and legislative and normative acts in the fumigation industry; expert assessments — experts were familiarized with the task of research to obtain their recommendations useful for its implementation; experimental — carrying out fumigation treatment in laboratory conditions, using the necessary equipment; mathematical and statistical — according to the method of B. Dospekhov, as well as using computer mathematical functions built into the program Microsoft Excel 2010.
 Results. Norms of consumption of methyl bromide in mixtures with carbon dioxide in the state of saturated carbon dioxide vapor decreased by 2 times, and supercritical fluid (by 4 times).
 Conclusions. The results of the studies made it possible to confirm that quarantine treatments by fumigating fresh vegetables and flower sections with a mixture of carbon dioxide and methyl bromide against such a quarantine pest like the western flower thrips (Frankliniella occidentalis Perg.) are possible with a CH3Br flow rate four times lower than its dosage use in pure form.