author(s)
Puja Chandrawanshi, Dr. SK Aherkar, Vrunda S Thakare and SA Shendage

abstract
The present experiment was conducted at laboratory of Entomology, Dr. PDKV Akola, during July 2016-17, to find out the “Effect of magnetic field and different diets on the biological parameter of the Corcyra cephalonica in Factorial Complete Randomized Design. The four main treatments were exposure of Corcyra larvae to magnetic field for 0 hrs, 2 hrs, 4 hrs and 6 hrs duration and four sub treatments were rearing of the larvae on different diets that is sorghum, sorghum and bajra, sorghum and maize and sorghum and wheat diet. Observations were recorded on, larval weight, larval length, mortality of Corcyra. The result showed that, rearing of Corcyra in magnetic field for two hrs recorded maximum larval weight 1.52 mg in M₂ and M_0, and maximum larval length 4.50 mm in treatment M_4. Magnetic treatment of 2 hr had positive effect and more than 4 hrs had negative effect on Corcyra larvae on the parameter under study and was at par with control. The interaction effect of magnetic field and diet also indicates that there was good effect of 2 hrs magnetic field and sorghum diet on Corcyra. The study indicates that exposure period to magnetic field plays an important role on biology and the results provide suitable diets for mass rearing, thus contributing significantly for the large-scale production of C. cephalonica.