Green manuring, mustard residue recycling and fertilizer application affects productivity and sustainability of Indian mustard (Brassica juncea L.) in Indian semi-arid tropics

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• 作者：O.P. Premi ; ^{oppremidrmr@gmail.com} ; B.K. Kandpal ; S.S. Rathore ; Kapila Shekhawat ; J.S. Chauhan
• 关键词：Indian mustard ; Sesbania green manure ; Mustard residue recycling ; NPK fertilizers ; Partial factor productivity ; Production efficiency
• 刊名：Industrial Crops and Products
• 出版年：2013
• 期刊代码：56_09266690
• 类别：abs
• 出版时间：January, 2013
• 卷：41
• 期：Complete
• 页码：423-429
• 文件大小：493 K

摘要

An experiment was conducted for five-years (2005-06 to 2009-10) to evaluate the impact of Sesbania green-manuring (GM), mustard-residue recycling and fertilizers on soil health and productivity of Indian mustard under fallow-mustard sequence. Sesbania (GM) significantly increased SOC, carbon-sequestration-potential rate, infiltration rate, available NPK status but decreased bulk density. Supplementing mustard-residue recycling 2.5 t ha^鈭? further improved the soil quality attributes significantly. The increase in fertilizer from N₄₀P_8.7K₀ to N₈₀P_17.4K_33.3 also improved the soil attributes gradually. This improvement in soil properties due to Sesbania (GM) and mustard-residue recycling significantly influenced plant height, branches/plant, siliquae/plant, seeds/siliqua and ultimately seed and oil yield compared to existing fallow-mustard practice. The mustard seed yield was increased by 42.3%due to Sesbania (GM) and by 63.9%due to supplementary mustard residue recycling in five years. Increase in fertilizers levels from N₄₀ to N₈₀ and P_8.7 to P_17.4 significantly improved mustard yield attributes, seed and oil yield while results of K application was inconsistent. The combined application of N₈₀P_17.4K_33.3 synergistically increased the seed yield by 82.1%over N₄₀P_8.7K₀. Sustainability yield index, partial factor productivity, production efficiency and incremental benefit cost ratio also showed significant improvement due to Sesbania (GM), mustard-residue recycling and judicious fertilizer use.