TAILIEUCHUNG - Crop productivity and soil biological properties influenced by long term application of mineral fertilizers and manures under rice-wheat sequence on mollisols of Northern India

The rice-wheat cropping system, which is considered as the backbone of food selfsufficiency, is facing a sustainability problem due to practices of modern production system with indiscriminate use of chemical fertilizers and pesticides. So, effects of long term use of mineral fertilizers and farmyard manure (FYM) under rice (Oryza sativa)– wheat (Triticum aestivum) cropping system in a Mollisol was investigated. Rice and wheat yields were highest ( and q ha-1 , respectively) with 100% NPK + 15 t FYM ha−1 and lowest in control ( and q ha-1 , respectively). Balanced fertilizers use of (100% NPK + Zn) was also at par with 100% NPK + FYM treatment in rice and wheat yields. The FYM amended treatment gave the highest and significantly more counts of bacteria, fungi and actinomycetes in all four depths of soil (0-15cm, 15-30cm, 30-45cm and 45-60cm) as compared to all other treatments after crop harvest. The observed microbial biomass C with 100% NPK + FYM in four soil depths were (, , and after rice and , , and µg g-1 after wheat, respectively, which was highest and significantly higher over all other treatments. Soil enzymes dehydrogenase, acid and alkaline phosphatase and urease activities were significantly higher with 100% NPK + 15 t FYM ha−1 than all the other treatments. Mineral fertilizer treatments with 100% NPK and 150% NPK were comparable and significantly better than application of 50% NPK, 100% N and 100% NP in different soil biological properties. Application of Zn with 100% NPK increased the crop yields and soil biological properties over 100% NPK. Imbalanced use of mineral fertilizers had the harmful effect on soil biological health. | Crop productivity and soil biological properties influenced by long term application of mineral fertilizers and manures under rice-wheat sequence on mollisols of Northern India

• Nông nghiệp
• Crop productivity
• Rice Wheat sequence
• Manures under rice wheat sequence
• Soil biological properties influenced
• Long term application
• Mineral fertilizers
• Crop water requirement
• Water productivity
• Comparative advantage
• Comparative advantage of crop production
• Highest crop water requirement
• Growth rate
• Cotton crop in selected
• Production and productivity
• Productivity of cotton crop
• Growth in area
• Agricultural science
• Weed control treatments
• Pea crop productivity
• Hand hoeing
• Crop sequence
• Timely sowing
• Fertilizers application
• Improved technologies
• Crop productivity enhancement
• Polynomial models
• Trend in area
• Important cash crops
• Sesame crop
• Forecast and ARIMA model
• Productivity of sesame crop
• Statistical model for forecasting area
• Forecasting area
• In situ moisture conservation
• Ridge and furrow
• Cotton crop
• Increasing productivity of cotton crop
• Rainfed stressed regions
• Linear model
• Nonlinear model
• Statistical models for area
• Productivity of maize crop
• Maize crop
• Simulation model
• CERES Rice
• Crop growth models
• Short duration rice
• Crop growth and productivity
• Soil erosion
• Crop productivity loss
• Tolerable soil loss
• RS and GIS
• Conservation practice factor
• Straw Decomposition
• Tricoderma viride
• Soybean crop productivity
• In situ enhancement
• Soybean straw decomposition
• Trichoderma Viride
• Rain and crop water use efficiency
• Crop water use efficiency
• Dry farming conditions
• Sustaining groundnut productivity
• Rainwater management
• Legume crop residue management
• Productivity of succeeding maize
• Maize is provided
• Organic manures
• Soil health and environmental concerns
• Split application
• Split application of vermicompost
• Vermicompost on productivity
• Profitability of wheat
• Wheat (Triticum aestivum L ) crop
• Clay loam soils
• Farm mechnanization
• Tillage equipments
• Sub tropical areas of Jammu
• Farm mechanization on crop productivity
• Farm mechanization
• Nanoporous zeolites
• Nutrients use efficiency
• Smart fertilizer
• Enhancing nutrient use efficiency
• Role of aminolevulinic acid
• Aminolevulinic acid
• Stress adaptation
• Specialized plant products
• Physiological processes
• Light interception
• Radiation use efficiency
• Semiarid agro ecosystem
• Labour saving technology
• Adopters and non adopters
• Northern dry zone of Karnataka
• Effect of labour saving technology
• Traditional cropping pattern
• Farmer’s income
• Beneficial impact of Kisan credit card
• Kisan credit card
• Crop production
• Productivity in selected
• Irrigation water use efficiency
• Field experiments
• Temperate condition
• Crop establishment techniques
• N levels of rice
• Rice on system productivity
• Economics of rice greengram system
• Clay loam soil
• Threshold limits of soil
• Relation to various soil functions
• Various soil functions
• Soil organic carbon
• Yield and crop productivity
• Impact of microclimate modification
• Microclimate modification
• Okra cultivation
• Crop establishment methods
• Primary branch
• Seed yield
• Haulm yield
• Productivity of succeeding green gram