Influence of Integrated Nutrient Management Modules Combining FYM, Bio-Consortia, and Nano-Phosphorus on Productivity, Nutrient Assimilation, and Soil Microbes in Rice (Oryza sativa L.)
Avinash Kumar Rai
Krishi Vigyan Kendra, Sonbhadra, Directorate of Extension, Aacharya Narendra Dev University of Agriculture & Technology, Kumarganj, Ayodhya, UP, India.
Veena Madhuri Ganjai *
Department of Soil Science, Assam Agricultural University, Jorhat-13, Pincode-785013, India.
Gandi Rupa *
Department of Agronomy, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, M.P, India.
R VijayKumar
Faculty of Forestry, Department of Botany and Microbiology, Acharya Nagarjuana University, Guntur, Andhra Pradesh 522510, India.
Sulochna
Department of Agronomy, Faculty of Agriculture, Agriculture College Garhwa, Birsa Agricultural University, Bishunpur, Piprakala, Garhwa-822114, Jharkhand, India.
Achal Kant
Department of Genetics and Plant Breeding, Narayan Institute of Agricultur Sciences, Gopal Narayan Singh University, Jamuhar, Sasaram, Dist. - Rohtas (Bihar), 821305, India.
Sudhanshu Verma
Krishi Vigyan Kendra Raebareli-II, C.S.A. University of Agriculture and Technology, Kanpur, India.
Moinuddin
Department of Agronomy, Shri Guru Ram Rai University, Dehradun, India.
Teku Bhau Thakre
Department of Botany, NSCBM College Hamirpur, Hamirpur, HPU, Shimla, India.
Priyankee Dutta
Department of Plant Breeding and Genetics, Assam Agricultural University, Assam, India.
*Author to whom correspondence should be addressed.
Abstract
A two-year field experiment conducted at KVK Ghazipur during the 2023 and 2024 Kharif seasons evaluated integrated nutrient management treatments in rice (Oryza sativa L.) cultivar 27P37 grown on alkaline, low-organic-carbon Inceptisols. Nine treatments were compared in a randomised block design with three replications, including an unfertilised control, 100% inorganic NPK, and combinations of 75% NPK with farmyard manure (5 t/ha), NPK-Consortia seed treatment, and Nano-P. The combined treatment (T9: 75% NPK + FYM + NPK-Consortia + Nano-P) produced the highest reported grain and straw yields of 70.40 and 72.65 q/ha, respectively. Corresponding total nitrogen, phosphorus, and potassium uptake values were 142.74, 27.15, and 131.26 kg/ha. Grain yield under 100% NPK (T2) was 43.10 q/ha. The unfertilised control yielded 34.30 q/ha, whereas T7 (75% NPK + FYM + Nano-P) yielded 66.50 q/ha. Partial factor productivity, calculated using the total applied synthetic N, P₂O₅, and K₂O rates, was 42.67 kg/kg for T9 compared with 19.59 kg/kg for T2. The highest reported post-harvest bacterial, fungal, and actinomyces populations were also recorded under T9. The findings suggest that combining reduced inorganic fertilisation with FYM, a microbial consortium, and Nano-P may improve the measured agronomic and biological outcomes under the study conditions. However, year-specific treatment means were not available to assess variation between seasons.
Keywords: Rice (Oryza sativa L.), integrated nutrient management, farmyard manure, NPK-Consortia, nano-phosphorus, grain yield, nutrient uptake, partial factor productivity, soil microbial population, Inceptisols