Evaluation of the Effectiveness of Copper Hydroxide CU (OH)2 against the Main Diseases of Tomato (Solanum Lycopersicum esculentum) in Burkina Faso

Abstract

Fungal and bacterial diseases cause a permanent threat to tomato production and can cause economic losses. This study aims to evaluate the biological effectiveness of copper hydroxide 65.6% in Burkina Faso. The evaluation was carried out in the Hauts-Bassins region in a farming environment during the dry and cold season, and the hot and humid season. The plant material used was the F1 Mongal tomato variety. The experimental design was a Fisher block comprising ten (10) repetitions and three (03) treatments. The treatments were distributed as follows: T0 (untreated), T1 (Mancozeb 800g/kg) and T2 (copper hydroxide 65.6%). Copper hydroxide 65.6% was applied at a dose of 4 kg/ha and Mancozeb 800g/kg at 3 kg/ha. The treatments were applied at intervals of one week over a period of one month. Tomato yield, disease prevalence and severity were the parameters studied. At the end of this study, the diseases identified were early blight, anthracnose, vascular fusarium wilt and bacterial wilt of tomatoes. Copper hydroxide 65.6% was found to be more effective than Mancozeb 800g/kg. It significantly reduced the prevalence and severity of early blight and anthracnose. The yield analysis showed that the treatment with copper hydroxide 65.6% recorded a yield gain of 3.16 tons compared to Mancozeb 800g/kg, and 4.87 tons compared to the non-control. processed. Given the biological effectiveness of copper hydroxide 65.6%, it would be desirable to recommend it to producers with a view to increasing tomato productivity.