Productivity, profitability and nutrient balance as influenced by diversification of Eice (Oryza sativa)-wheat (Triticum aestivum) cropping system
DOI:
https://doi.org/10.59797/ija.v53i2.4840Keywords:
Diversification, Energy equivalent, Nutrient balance, Productivity, Profitability, Rice-equivalent yieldAbstract
A field experiment was conducted during 2004-2005 and 2005-06 at Sabour, Bihar to diversify the existing rice (Oryza sativa L.) A wheat (Triticum aestivum L. emend. Fiori & Paol.) cropping system. Among the 14 rice-based cropping systems tested, rice-potato (Solanum tuberosum L.)Aonion (Allium cepa L.) + maize (Zea mays L.) relay cropping gave the highest mean rice-equivalent yield (30.66 tihdyear), followed by rice-garlic (Allium sativum L.) - maize (30.35 tihalyear) and rice-potato-onion (27.95 tihdyear). The highest net returns of R s 96,581lhdyear were realized from rice-garlic-maize, which were on a par with that of rice-potato-onion + maize relay cropping (Rs 92,837lhalyear). However, the benefit : cost ratio was highest (1.73) in rice-berseem [Trifolium alexandrinum (L.) Juslen.] ii maize + cowpea [Vigna unguiculata (L.) Walp.], both grown for fodder. The highest water-use efficiency (37.01 kg rice-equivalent yieldlhdmm) was recorded with riceRgarlicAmaize system. The rice-potato-onion + maize relay cropping proved the most effective in producing highest calorific value (61,155 K calorieslha) and showed the maximum land-use efficiency (94.8%). The same cropping system removed the maximum quantity of N (371.6 kglha), P (1 10.4 kglha) and K (451.4 kg1 ha), followed by rice-berseem -maize + cowpea (F), having cor- responding values 352.0, 88.2 and 361.0 kg/ hdyear. Heavy removal of NPK by rice-berseem-maize+cowpea (F) resulted in maximum negative balance of nitrogen (1 52.9 kglha), phosphorus (31.4 kglha) and potassium (304.6 kglhalyear). Potassium balance was negative in all the cropping systems, indicating that K was the most remov- able nutrient by the crops, which results in mining of soil K and thus calls for adequate K fertilization.References
Choudhary, J.B., Thakur, R.C., Bhargava, M and Sood, R.D. 2001. Production potential and economics of rice (Oryza sativa)- based cropping systems on farmers' fields under mid-hill conditions of Himachal Pradish. Himachal Journal of Agri- cultural Research 27(1,2): 31-35.
Kharub, A.S., Chauhan, D.S., Sharma, R.K., Chhokar, R.S. and Tripathi, S.C. 2003. Diversification of rice (Oryza sativa) -wheat (Triticum aesrivum) system for improving soil fertil- ity and productivity. Indian Journal of Agronomy 48(3): 149-152.
Kurnar, Alok and Yadav, D.S. 1993. Effect of long term fertilization on soil fertility and yield under rice-wheat cropping system. Journal of Indian Society of Soil Science 41(1): 178-180.
Kumpawat, B.S. 2001. Production potential and economics of dif- ferent crop sequences. Indian Journal of Agronomy 46(3): 42 1-424.
Nambiar, K.K.M. and Abrol, I.P. 1992. Long-term fertilizer experi- ments in India: An overview. Fertilizer News 34(4): 11-20.
Panesar, B.S. and Bhatnagar, A.P. 1994. Energy norms for inputs and outputs of agricultural sector. In: Energy Management and Conservation in Agricultural Production and Food Pro-cessing, pp. 5-16. Verma, S. R., Mittal, J. P. and Singh, Surendra (Eds.) USG Publishers & Distributors, Ludhiana.
Sharma, S.K. and Sharma, S.N. 2002. Balance sheet of nitrogen, phosphorus and potassium under different rice (Oryza sa- tiva) -based cropping systems. Indian joumal of Agronomy 47(1): 6-1 1.
Singh, V.K. and Sharma, B.B. 2002. Economic evaluation of rice (Oryza sativa) -based cropping sequences in foothills of Himalayas. Indian joumal of Agronomy 47(1): 12-19.
