1Biological Control Laboratory, Department of Agricultural Entomology, Post Graduate Institute, Dr Panjabrao Deshmukh Krishi Vidyapeeth, Akola, 444001, Maharashtra, India
*Email: srivishnumurthy.j@gmail.com (corresponding author: ORCID ID 0000-0003-3965-4119)
Online Published on 20 April, 2024.
Bioassay was conducted with nine botanical extracts at various concentrations viz., azadirachtin 300 ppm, 1500 ppm, 3000 ppm, 10000 ppm, neem seed oil 1%, 2%, 3%, neem seed extract 5% and dashparniark 4% on Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae) in completely randomized design. Assessment of these on % parasitization, reduction in parasitism and adult emergence of T. bactrae on Corcyra eggs was done. The results revealed that dashparniark (ten plant leaves extract) 4% was found safer with maximum parasitization (53.3%) and minimum reduction in parasitization (27.9%). Azadirachtin 10000 ppm was found harmful resulting in reduced parasitization (12.6%) and adult emergence (32.6%); and maximum reduction in parasitism (82.9%) on Corcyra eggs was observed. Maximum % adult emergence was recorded when parasitized eggs were treated with neem seed oil 1% (64.3%).
Trichogrammatoidea bactrae, Parasitization, Corcyra cephalonica, Azadirachtin, Neem seed oil, Adult emergence, Dashparni ark, Neem seed extract, Biosafety, Bioassay
