Antibiosis in rice to white backed plant hopper as influenced by zinc application Tripathy Seema*, Rath Ladu Kishore Department of Entomology, College of Agriculture, Odisha University of Agriculture and Technology, Bhubaneswar, 751003 *Email: seematripathy2@gmail.com (corresponding author)
Abstract The induced effect of Zn on white backed plant hopper infesting rice was studied during kharif, 2017 through application of Zn in form of ZnSO4 and Zn EDTA either as basal or foliar spray method. The pot culture study revealed that application of Zn EDTA as basal @ 40 kg/ha along with foliar spray of Zn EDTA @ 0.8% twice at 30 and 45 days after transplanting (T6) significantly reduced the growth and development parameters like nymphal survival, growth index, adult longevity, population buildup, weight gain and feeding potential. Also, the nymphal period got prolonged. Such impaired growth and development with reduced feeding in Zn EDTA treated plants denotes the induced antibiosis effect of Zn on WBPH. Top Keywords White backed plant hopper, rice, Zn EDTA, basal, foliar spray, pot culture, life stages, developmental period, induced antibiosis. Top |