International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 5
First page : (1070) Last page : (1074)
Article doi: http://dx.doi.org/10.18782/2320-7051.5171
Site-Specific Nutrient Management with Rice-Wheat Crop Manager in South Bihar Alluvial Plain Zone of India
Sanjeev Kumar Gupta1, Mainak Ghosh1*, Anshuman Kohli2, Sheetal Sharma3, Y. K. Singh2, Sunil Kumar2, Uday Kumar4 and Koneru Lakshman5
1Department of Agronomy, Bihar Agricultural College,
2Department of Soil Science and Agricultural Chemistry, Bihar Agricultural College,
3International Rice Research Institute (IRRI), NASC Complex, Pusa, New Delhi
4Department of Agronomy, V. K. S. College of Agriculture, Dumraon,
5Jute Research Station, Katihar, Bihar Agricultural University, Sabour 813210, Bhagalpur, Bihar
*Corresponding Author E-mail: mainakghosh999@gmail.com
Received: 10.07.2017 | Revised: 26.08.2017 | Accepted: 4.09.2017
ABSTRACT
The SSNM approach provides algorithms that can be used to determine field-specific fertilizer requirements matching the needs and conditions of individual fields. Field experimentswere conducted on farmers’ fields in different villages of Bhagalpur district in Bihar under Bihar Agricultural University, Sabour, Bhagalpur, India, during 2013-14 to study the effect various fertilizer recommendation regimes on productivity of wheat crop vis-a-vis farmer’s practice. There are two sets of experiment conducted,each in randomized block design with eight locations and the locations were taken as replications. The first experiment involved four treatments namely farmer’s fertilizer practice (FFP), state fertilizer recommendation (SFR), soil test based recommendation (STR) and rice-wheat crop manager (RWCM) based recommendation. In order to determine the nutrient limited yield the second experiment on nutrient omission was conducted with five treatments namely full dose of P, K and Zn (N omission) (T1), full dose of N, K and Zn (P omission) (T2), full dose of N, P and Zn (K omission) (T3), full dose of N, P and K (Zn omission) (T4) and full dose of N, P, K and Zn (T5). The amount of N and K2O applied in RWCM varied from 85-90 and 25-30 kg ha-1 respectively.However, in farmers’ field there was large variation in nutrient application. The statistically similar performance in first experiment appears due to the large variation in thevarious farmers’ fields.From the study it was observed that N is the most essential nutrient and devoid of N reduced the grain yield by 33%. After one year of field experiment it was noted that farmers are applied about 60 to 80kg more N per hectare over that of RWCM with 50% less K in FFP than RWCM.
Key words: Site-specific nutrient management, Omission plot, Crop manager, Wheat.
Full Text : PDF; Journal doi : http://dx.doi.org/10.18782
Cite this article: Gupta, S.K., Ghosh, M., Kohli, A., Sharma, S., Singh, Y.K., Kumar, S., Kumar, U. and Lakshman, K., Site-Specific Nutrient Management with Rice-Wheat Crop Manager in South Bihar Alluvial Plain Zone of India, Int. J. Pure App. Biosci.5(5): 1070-1074 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5171
