Cultural practices and pesticides contamination level of tomato in two gardening sites in the region of Boucle du Mouhoun, Burkina Faso

Abstract

The present study consisted of evaluation of cultural practices and pesticides contamination level of tomato in some gardening sites in the region of Boucle du Mouhoun (Burkina Faso). A survey of phytosanitary practices among 30 producers was carried out at the Di and Dedougou sites. The pesticide contamination level of tomatoes collected was determined by the QuEChERS method. The survey revealed a low level of literacy among producers (60%), an increased use of pesticides without adequate protection materials, non-compliance with prescribed doses, use of unregistered pesticides (28%) and poor management of packaging. Chromatophic analysis of the samples detected 16 active substances predominantly organophosphorus (62%). 62.5% of detected compounds (Omethoate, Parathion methyl, Diazinon, Methydathion, Pyridaphethion, Pyrimiphos methyl, Alachlor, 2.4 DDT, lindane, permethrin and Imazalil) are not authorized by the CSP. Among authorized compounds, Dimethoate, Malathion, and Cypermetrin contamination levels higher than the MRLs have been observed. These results confirmed risks of environment contamination and sanitary of farmers and consumers linked to their exposure and consumption of tomatoes. Measures should be taken to raise awareness among market gardeners of good pesticide use practices and the adoption of alternative methods to pesticides to protect environment, gardeners and consumers health.

Evaluation of the performance of an handheld device for measuring cholinesterase activity, in order to use in cases of organophosphate poisoning

“…Organophosphate (OP) pesticides are still used in Burkina Faso in the agriculture field (Sanou et al, 2020). Persons exposed to these chemicals can exhibit a spectrum of signs and symptoms ranging from mild anxiety to cardiovascular collapse and rarely death (Lessenger and Reese, 2001).…”

“…Several studies have been conducted with the instrument (Carmona-Fonseca, 2006;Carmona-Fonseca, 2007;Diatta et al, 2021) . In a country with limited resources like Burkina Faso, Organophosphorus pesticides is still used by the farmers (Sanou et al, 2020;Traore et al, 2020). Cholinesterase monitoring during the organophosphorus pesticides poisoning is still a challenge in the remote areas because of an unavailability of analyzer and a lack of power supply.…”