Srishti Singh, Anil Kumar Singh. Adesh, Sukhdam Singh, Kamta Prasad Pandey,Subhash Singh, Meghnath Singh,Dhurwe, Kamta Prasad Pandey and Nihal Chandra Mahajan
Abstract
A field experiment was conducted during the Rabi seasons of 2024â25 and 2025â26 at the Agronomy Research Farm, Acharya Narendra Deva University of Agriculture and Technology, Kumarganj, Ayodhya, Uttar Pradesh, to evaluate the effect of integrated nutrient management on growth indices of Indian mustard (Brassica juncea L.) varieties. The study was laid out in a split-plot design with four varieties (Varuna, Narendra-8501, PM-30, and PM-31) in the main plots and five nutrient management practices in the subplots: absolute control, 100% N through urea, 75% N through urea + 25% N through FYM, 75% N through urea + 25% N through vermicompost, and 75% N through urea + 12.5% N through FYM + 12.5% N through vermicompost + NPK consortia. Results indicated that varieties and nutrient management practices significantly influenced Relative Growth Rate (RGR) and Net Assimilation Rate (NAR) during both years. Among the varieties, Narendra-8501 exhibited significantly higher RGR and NAR, particularly at early growth stages. The integrated nutrient management treatment comprising 75% N through urea + 12.5% N through FYM + 12.5% N through vermicompost + NPK consortia recorded the highest values of growth indices and was found superior to other treatments. The enhanced growth performance under this treatment was attributed to balanced and sustained nutrient supply coupled with improved soil physical and biological conditions. The study concluded that integrated use of organic and inorganic nutrient sources is highly effective in improving the growth efficiency of Indian mustard.