Loading...
Theses
Browse
1 results
Search Results
ThesisItem Open Access Comparative study of organic inorganic and integrated nutrient management on productivity economics and soil health under various rice based cropping system(JNKVV, 2014) Dubey, Megha; Agriwal, K.K.ABSTRACT Grain yield of all kharif and rabi crops was significantly affected due to different nutrient managements during both the years of investigation. Based on two years mean data 100% inorganic nutrient management proved significantly superior to integrated and 100% organic nutrient management from total production point of view. Inorganic nutrient management produced significantly maximum REYs (68.13 q ha-1 year-1) as compared to integrated and 100% organic nutrient management. The grain yield was significantly higher during kharif and rabi as compared to summer season and this trend was reflected in terms of total productivity. In first years, the grain yield of kharif, rabi and summer crops was significantly higher in the treatment where 100% inorganic sources was applied as compared to integrated and 100% organic nutrient management. Whereas, the yield of different crops reduced during second year throughout the year. To assess the total productivity of various cropping systems as a whole, rice equivalent yields (REYs) were determined under different treatments. Based on three years data, the rice equivalent yields significantly varied due to different nutrient managements and cropping systems. Rice-berseem (fodder+seed) cropping system produced higher rice equivalent yields (74.99 q ha-1 year-1) than the rice-vegetable pea-sorghum (fodder) (68.68 q ha-1 year-1) which decreased in green manuring-rice-wheat and rice-chickpea-sesame cropping system (63.90 and 51.80 q ha-1 year-1) respectively. In comparison between different nutrient management practices it was observed that application of 100% inorganic nutrient management practices produced the maximum (68.13 q ha-1 year-1) rice equivalent yields followed by integrated nutrient management (66.20 q ha-1 year-1) and 100% organic nutrient management (60.23 q ha-1 year-1) . The productivity efficiency was significantly higher ( 21.71 kg ha-1 cm-1 ) with 100% inorganic nutrient management than 100% organic nutrient management (19.22 kg ha-1 cm-1) but integrated nutrient management was as good as inorganic nutrient management . As regard different cropping systems rice-berseem (fodder+seed ) cropping system recorded the significantly higher production efficiency of 26.11 kg ha-1 cm-1 to all other cropping systems. Consumptive use of water was not affected by different nutrient management practices. Among cropping system rice-berseem (fodder+ seed) cropping system recorded the maximum CUW with 213.60 cm ha-1 superior over all other cropping systems. The water productivity was maximum in 100% inorganic nutrient management with 35.29 kg ha-1 cm-1 followed by integrated nutrient management (34.44 kg ha-1 cm-1).Where as it was superior in rice-vegetable pea-sorgum (fodder) cropping system 37.39 kg ha-1 cm-1 followed by rice-berseem (fodder+seed) (36.26 kg ha-1 cm-1). On the basis of above findings it can be concluded. The cost of cultivation to grow rice-vegetable pea-sorghum (fodder) cropping system with application of and 100% organic nutrient needed maximum investment (119886 Rs ha-1) rice-vegetable pea-sorghum (fodder) cropping system with 100% organic nutrient management, which was reduced under different cropping system. While it was the least (48479 Rs ha-1) in green manuring-rice-wheat cropping system under 100% inorganic nutrient management practices. While considering the monetary advantages by the treatments in terms of gross monetary return, 100% organic nutrient management practices (159827 Rs ha-1) and rice-berseem (fodder+seed) cropping system (181261 Rs ha-1) resulted in the highest gross monetary return. Based on the results, 100% inorganic nutrient management practices recorded (95251 Rs ha-1) and rice-berseem (fodder+seed) cropping system (111155 Rs ha-1) fetched the highest net monetary returns. The profitability (B:C ratio) under 100% inorganic nutrient management practices (2.70) and rice-berseem (fodder+seed) cropping system was (2.60) respectively was superior over all other cropping systems.