Contribution à l'élaboration d'un nouveau programme de protection phytosanitaire du cotonnier au Burundi

Contribution on the Elaboration of a New Cotton Protection Programme in Burundi. Yield losses caused by cotton pests are a major constraint for farmers in Burundi. During the flowering and fruit formation, 5 or 6 insecticide treatments are applied between the 45th and the 60th day after sowing, according to the infestation level. These treatments are carried out every two weeks against the main pests, i. e. sucking insects, mites and bollworms. The choice of active ingredients is determined by their efficacy potential interaction and low toxicity to the environment. The presence of endocarpic bollworms, which are difficult to count requires scheduled spraying. The new cotton protection programme recommends the use of low doses of insecticides, the alternation of active ingredients and the application of water-based emulsions by low volume (10 I. per hectare)