EFFECT OF INTEGRATED NUTRIENT AND PEST MANAGEMENT PRACTICES ON PRODUCTIVITY AND SOIL HEALTH OF SUGARCANE BASED CROPPING SYSTEM

摘要

Experiment was conducted at Chaudhary Charan Singh Haryana Agricultural University, Regional Research Station, Kamal for three consecutive years 2006-07 (plant crop) to 2009-10 (ratoon crop) with the objective to develop eco-friendly nutrient and pest management strategy for sugarcane. The highest cane productivity of plant-ratoon(78.9 and 78.1 t/ha) system was recorded with treatment T_5-75% recommended NPK through inorganics + 25 % through organic + Bio pesticide (trichoderma /Pseuodomonas/Neem cake) in plant crop + 75% recommended NPK through inorganics + 25 % through organic + Biofertilizers + trash mulching and green manuring of legumes in alternate rows+ Biopesticide (Pseudomonas+trichodermaeem cake) in ratoon crop being at par with treatment T_1-Recommended NPK+ micronutrients through inorganics+ control of pest/disease through chemical mode(Plant crop) + Recommended NPK+ trash burning + control of pest/disease through chemical mode(ratoon crop) (78.2 and 76.1 t/ha). A significant reduction in cane yield was recorded when all the nutrients were supplied though organic sources and where pest and disease were controlled through organic mode only though the quantum of reduction was reduced in ratoon crop. CCS % was not affected by different treatments. Highest sugar yield (9.07 and 9.06 t/ha) was recorded in treatment T_5-75% recommended NPK through inorganics + 25 % through organic + Bio pesticide in plant crop + 75% recommended NPK through inorganics + 25 % through organic + Biofertilizers + trash mulching and green manuring of legumes in alternate rows+ Biopesticide in ratoon crop The soil analysis after harvest of the plant crop showed that pH and electrical conductivity (EC) of the soil did not change due to different treatments .The organic carbon increased slightly in the plots where 25% or 75% N was applied through biocompost.