author(s)
Ashrith KN, Kalleshwara Swamy CM, Dushyantha Kumar BM and Dhananjaya BC

abstract
A field experiment was carried out during Kharif 2017 summer 2018 to evaluate relative efficacy of organic amendments on the incidence of major lepidopteran pests in rice. Five organic amendments viz., vermicompost, farmyard manure, poultry manure, neem cake and sheep manure along with chemical fertilizer (RDF) were evaluated. Among the organic amendments tested, neem cake recorded lowest percent leaf folder, Cnaphalocrosis medinalis Guenee damage (5.96%) as against the untreated control. Addition of organic amendments like sheep manure and poultry manure recorded moderate leaf damage (9.85%). The present investigation indicated that increase in NPK doses increased the incidence of leaf folder (12.16%). The effect of organic amendments on yellow stem borer Scirpophaga incertulas Walker infestation was noticeable in test crop. The observation at 45 DAT revealed that maximum damage by the borer was noticed at NPK (12.41%) followed by FYM (12.24%) and vermicompost (10.34%). Results revealed that soil amendments decreased the infestation of leaf folder and yellow stem borer. Implication of the study in eco-friendly management of lepidopteran pests is discussed.