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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 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2019.8(5): 1658-1666
DOI: https://doi.org/10.20546/ijcmas.2019.805.191


Soil Test Crop Response based Fertilizer Equations for Bt Cotton under Rainfed Situation in Vertisol
T. Sherene*1, R. Santhi2 and K. Bharathi Kumar3
1Dept. of Soil Science & Agricultural Chemistry, ADAC&RI, Trichy, TNAU, India
2Directorate of Natural Resources Management, TNAU, Coimbatore, India
3Cotton Research Station, Veppanthattai, TamilNadu Agricultural University, Coimbatore, India
*Corresponding author
Abstract:

Field experiments were conducted on a Typic Haplustert of Tamil Nadu by adopting the inductive cum targeted yield model developed for Bt cotton under rainfed situation. The basic parameters viz., NR, Cs, Cf and contribution of nutrients from FYM were computed from the field experimental data developed in the previous cropping season. Using these basic parameters, fertilizer prescription equations were developed under the Integrated Plant Nutrition System (IPNS) and nomograms were formulated for the desired yield target of Bt cotton for a range of soil test values. The quantity of nutrients that could be contributed by FYM at 12.5 t ha-1 was evaluated as 25, 20 and 26 kg N, P2O5 and potassium oxide K2O respectively, when applied along with the NPK fertilizers as per soil test and desired yield target. The fertilizer prescription equations developed for Bt cotton proved their validity under six numbers of farmer’s holdings under rainfed situation.


Keywords: Fertilizer prescription Equation, IPNS, Nutrients, Soil fertility, Vertisol
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How to cite this article:

Sherene, T., R. Santhi and Bharathi Kumar, K. 2019. Soil Test Crop Response based Fertilizer Equations for Bt Cotton Under Rainfed Situation in Vertisol.Int.J.Curr.Microbiol.App.Sci. 8(5): 1658-1666. doi: https://doi.org/10.20546/ijcmas.2019.805.191