Influence of nutrients and cropping sequence on incidence of insect pests in Mustard

The cropping pattern and plant nutrients had significant influence on the population dynamics of Athalia proxima and Phytomyza atricornis. The minimum incidence of Athalia proxima was observed in fallow –mustard cropping system while, bajra – mustard and maize - mustard cropping system had minimum population of Phytomyza atricornis. The recommended dose of 150 kg. N, 75 kg P and 75 kg K/ha with 2 ton FYM, 40 kg sulpher/ha treated plot had lowest population of Athalia proxima. The nutritional combination i.e. 112.5,56.25,56.25 Kg.NPK/ha, 2 tone FYM/ha, 40 kg.sulphur/ha, 25 kg ZnSo₄/ha and 1 kg boron/ha had lowest incidence of Phytomyza atricornis.