Determination of species composition and effective of plant extracts to prevent the eggs-lay of fruit flies, Bactrocera spp. infesting jackfruit

Determining the composition of fruit flies damage to jackfruit and effect some plant extracts prevent fly egg laying was carried out from January November 2022 at Southern Horticultural Research Institute (SOFRI) farms Tan Lap Thanh communes, district, Long An province. The results determining “Changai” species in 15 orchards revealed that there were two species, Bactrocera dorsalis B. umbrosa with a frequency occurrence 80.0% 26.67%, respectively. lab trial study efficiency five Allium sativum (Garlic), cepa (Onion), Wedelia trilobata (Wedelia), Artemisia absinthium (Mugwort), Azadirachta indica (Neem) conducted; showed treatments A. W. highly effective against rates 82.22% 71.50% 7 days after treatment. In laboratory conditions, 0.9% concentration neem seed extract preventing oviposition on fruits by 83.19%. field spraying 8 times/fruit crop 6 (5 days/time, respectively) reduced rate 41.67% 50.33%, experimental have an initial significance contributing integrated pest management process jackfruit.