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Abstract
Field experiment was conducted on groundnut during kharif, 2014 at College of Agriculture, Rajendranagar, Hyderabad to study the effect of four organics (vermicompost with P enrichment using 3 % rock phosphate, vermicompost prepared with mushroom spent substrate, vermicompost and FYM) at two levels of nitrogen (100 % RDN i.e., 30 kg ha-1 and 75 % RDN i.e., 22.5 kg ha-1) along with control (No NPK but gypsum @ 500 kg ha-1 at flower initiation) and absolute control (no NPK and gypsum) to find out the effect of different organic sources on nutrient use efficiencies viz., partial factor productivity, agronomic efficiency, partial nutrient balance, apparent recovery efficiency, internal utilisation efficiency and physiological efficiency. Significantly higher agronomic efficiency and partial productivity factor of 86.7 and 174.63 are obtained due to application of 75% RDN through of P (3%) enriched vermicompost; while apparent recovery efficiency of N was significantly higher (4.08 and 4.03 to absolute control and control with applied gypsum) when applied at 100% RDN level.
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References
- Duhan BS, Mahendera S 2002. Effect of green manuring and nitrogen on yield and uptake of micronutrients of rice. J. Indian Soc. Soil. Sci. 50(2):178-180.
- Elayaraja, D and Singaravel,R. 2011. Influence of organics and Various Levels of NPK on the Soil Nutrient Availability, Enzyme Activity and Yield of Groundnut in Coastal Sandy Soil. Journal of Indian Society of Soil Science. Vol. 59, No. 3, pp 300-303.
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- Ministry of Agriculture, GOI, 2012.Selected State wise Area, production and productivity of Groundnut (Rabi) in India (2001-2002 to 2011-2012).
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- National Centre for Organic farming, 2012. Area and production of crops under organic cultivation, CGO-II, KamlaNehruNagar, Ghaziabad , 201001, Uttar Pradesh.
- Rajagopal, K., Chandran, K., Mishra, J.B., Bhalodia, P.K. and Mathur, R.S. 2000. Evaluation of bold seeded groundnutaccessions for confectionary attributes. International Arachis Newsletter.20: 18–20.
- Sailaja Kumari, M. S and UshaKumari, K.2002.Effect of vermicompost enriched with rock phosphate on the yield and uptake of nutrients in cowpea (VignaunguiculataL.). Journal of Tropical Agriculture.40: 27-30.
References
Duhan BS, Mahendera S 2002. Effect of green manuring and nitrogen on yield and uptake of micronutrients of rice. J. Indian Soc. Soil. Sci. 50(2):178-180.
Elayaraja, D and Singaravel,R. 2011. Influence of organics and Various Levels of NPK on the Soil Nutrient Availability, Enzyme Activity and Yield of Groundnut in Coastal Sandy Soil. Journal of Indian Society of Soil Science. Vol. 59, No. 3, pp 300-303.
Fixen PE (2005). Understanding and improving nutrient use efficiency as an application of information technology. In: Proceedings of the Symposium on Information Technology in Soil Fertility and Fertilizer Management, a satellite symposium at the XV International Plant Nutrient Colloquium, Sep. 14-16, 2005. Beijing, China
Ministry of Agriculture, GOI, 2012.Selected State wise Area, production and productivity of Groundnut (Rabi) in India (2001-2002 to 2011-2012).
Mosier AR, Syers JK, Freney JR (2004). Agriculture and the Nitrogen Cycle. Assessing the Impacts of Fertilizer Use on Food Production and the Environment.Scope-65. Island Press, London.
National Centre for Organic farming, 2012. Area and production of crops under organic cultivation, CGO-II, KamlaNehruNagar, Ghaziabad , 201001, Uttar Pradesh.
Rajagopal, K., Chandran, K., Mishra, J.B., Bhalodia, P.K. and Mathur, R.S. 2000. Evaluation of bold seeded groundnutaccessions for confectionary attributes. International Arachis Newsletter.20: 18–20.
Sailaja Kumari, M. S and UshaKumari, K.2002.Effect of vermicompost enriched with rock phosphate on the yield and uptake of nutrients in cowpea (VignaunguiculataL.). Journal of Tropical Agriculture.40: 27-30.