Effect of different levels of NADEP manure on insect-pests and disease in different crops grown under certified organic farm

Abstract

Effect of different levels of NADEP manure on insect-pest infestation as well as disease intensity in five different crops were studied at Certified Organic Farm of Navsari Agricultural University, Navsari. The result of an experiment indicated that nitrogen plays an important role on insect infestation as well as disease intensity in different crops. Higher infestation of sorghum stem borer, cabbage head borer, onion thrips and tomato fruit borer were found in when applied higher dose of NADEP manure (100% RDN). Whereas in case of disease intensity, higher disease intensity including sorghum anthracnose, alternaria leaf spot of cabbage, purple blotch of onion and early blight of tomato were also found in treatment receiving 100% RDN through NADEP manure. While in green gram, higher infestation of aphid as well as higher intensity of powdery mildew were found in treatment of 4 tonne NADEP manure per hectare.