The efficiency of biopesticides, hyptis suaveolens, azadirachta indica and allium sativum in carrot production in the municipality of parakou (Benin)

Carrot production in the municipality of Parakou and in Benin in general encounters losses problems caused by pests, the great cost of chemical products as well as the dangers related to their misuse. Thus, the aim of this research is to assess the efficiency of three biopesticides solutions (Hyptis suaveolens, Azadirachta indica and Allium sativum) in order to promote them and improve carrot cultivation. The experimental device was a randomized complete block design with four repetitions and four treatments: (T0 = no biopesticide), (T1 = Allium sativum treatment), (T2 = Azadirachta indica treatment) and (T3 = hyptis suaveolens treatment). The statistical analysis of the data was performed using Excel software. The results from the biopesticide test of the three plant species have proven their effectiveness in varying proportions against the pests responsible for the damage or losses in the production of the carrot crop. The Allium sativum biopesticide solution show the best performance with crops free from crown rot, root galleries and plant death. Indeed, attacks were observed on the leaves with a low average of one attacked leaf per block. In terms of root weight, this treatment also has a higher yield with an average of 605g/1.5m2. From these results, the treatment with the solution of the biopesticide Allium sativum could be an alternative to synthetic pesticides in the framework of the integrated management of carrot pest groups.