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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2020)
[Effective from January 1, 2020]
For more details click here

ICV 2018: 95.39
Index Copernicus ICI Journals Master List 2018 - IJCMAS--ICV 2018: 95.39
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : editorijcmas@gmail.com / submit@ijcmas.com
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(5): 1485-1498
DOI: https://doi.org/10.20546/ijcmas.2020.905.169


Validation and Refinement of Soil Test Based Derieved Fertilizer Equation for SRI Rice in Vertisol
Krishna*, L. K. Srivatsava, V. N. Mishra, Neha Padhi, Neeta Rathia and Susma
College of Agriculture, Indira Gandhi Krishi Vishwavidyalaya, Raipur, Chhattisgarh, India
*Corresponding author
Abstract:

The fertilizer adjustment equations evolved during previous season for the Swarna variety of rice was tested and fertilizer application with organic source (FYM). It was also noticed that fertilizer dose applied based on STCR prescription derived previously to achieve a definite yield target could not be obtained. This may be due to differences in various input use efficiency, nutritional requirement. However, further refinement of the equations was tried using nutrients omission plot technique and basic parameters required for the formulation of the fertilizer equations were confirmed.  The amount of nutrient required to produce one quintal of rice grain yield was found to be 1.57 kg N, 0.30 kg P and 1.71 kg K. The contribution of fertilizer N, P and K were estimated as 41.83, 28.37 and 116.21 per cent. Similarly, the contribution of soil test N, P and K were recorded as 33.55, 81.28 and 19.10 percent. The contribution of organic source (FYM) was observed as 13.8 % N, 6.67 % P and 11.64 % K. After refinement of the fertilizer prescription equations, it was observed that by calculation with new equation, N and P fertilizer requirement at various soil test levels increased over existing equations developed previously. However, the dose of K fertilizer was lower than existing one. Hence, a new set of N P K doses at different soil test levels were evolved and need to be tested for its suitability under similar soil and crop situation.


Keywords: STCR, Rice, SRI, FYM, Vertisol
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How to cite this article:

Krishna, L. K. Srivatsava, V. N. Mishra, Neha Padhi, Neeta Rathia and Susma. 2020. Validation and Refinement of Soil Test Based Derieved Fertilizer Equation for SRI Rice in Vertisol.Int.J.Curr.Microbiol.App.Sci. 9(5): 1485-1498. doi: https://doi.org/10.20546/ijcmas.2020.905.169