Population dynamics and on-farm fruit fly integrated pest management in mango orchards in the natural area of Niayes in Senegal.
Ndiaye M., Dieng E. O., Delhove G.
Author Affiliation: National Plant Protection Service, Km 15, Route de Rufisque, Box: 20054 Thiaroye, Dakar, Senegal.
Pest Management in Horticultural Ecosystems 14 : 1-8
Abstract : Experiments were conducted in mango orchards in Niayes, Senegal, to study the population dynamics of fruit flies in relation to the rainfall, assess the effectiveness of an integrated pest management (IPM) package against the infestation of the fruit flies, and to compare the conventional lure methyl eugenol to the home-made baits of ground nutmeg and NET (beauty cream). Results showed that Bactrocera invadens and Ceratitis cosyra populations followed the dynamics of the rains, since the number of the captures was more important during the rainiest period from 9 July to 20 August. This trend was more perceptible on B. invadens than on C. cosyra. The IPM package, which included (1) male annihilation using wood blocks soaked in malathion 50 EC and lure (methyl eugenol and terpinyl acetate), (2) protein hydrolysate bait applications (Success Appat at 1 litre per ha) and (3) sanitation (weeding and destroying of the collected fallen fruits by using black plastic bags, burying in holes, burning on the ground surface and incinerating with a barrel transformed into incinerator), significantly reduced fruit fly infestations in mango orchards by up to 83% compared with the untreated control. Methyl eugenol attracted B. invadens better than the home-made baits. The half life of methyl eugenol was also longer than ground nutmeg. No capture was recorded in the NET-based trap.