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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(7): 2051-2061
DOI: https://doi.org/10.20546/ijcmas.2019.807.246


Fertilizer Calibrations for Hybrid Brinjal based Cropping Sequence using Post-Harvest Soil Test Values Prediction Equations under Soil Test Crop Response Based Integrated Plant Nutrition System
Ch. Kirankumar1*, R. Santhi2, D. Srihari3 and S. Maragatham1
1Department of Soil Science and Agricultural Chemistry
2Directorate of Natural Resource Management, Tamil Nadu Agricultural University, Coimbatore
3Dr. YSR Horticultural University, Venkataramannagudem, Andhra Pradesh, India
*Corresponding author
Abstract:

Field experiments were conducted with hybrid brinjal under IPNS during 2017-18 adopting Inductive cum Targeted yield model (Ramamoorthy et al, 1967) to develop post-harvest soil test values (PHSTVs) prediction equations on Visakhapatnam soil series (TypicHaplustept) which is rednon-calcareous. The experiment was laid out in a fractional factorial design comprising twenty four treatments and the test crop experiment with hybrid brinjal was conducted with four levels of each of N (0, 80, 160 and 240 kg ha-1), P2O5 (0, 40, 80 and 120 kg ha-1) and (0, 60, 120 and 180 K2O kg ha-1) and three levels of FYM (0, 12.5 and 25 t ha-1). The IPNS treatments were superimposed across the strips. There were 21 fertiliser treatments along with three controls which were randomized in each strip in such a way that all the treatments occurred in both directions. Using the plot wise initial test values, fertiliser doses and fruit yield and /or uptake of N, P & K by brinjal and post-harvest soil test values, PHSTVs prediction equations were developed. Both the predicted and observed soil test values revealed that the soil fertility was found to decline markedly under unfertilized (control) and increased based on fertiliser doses imposed and soil fertility gradient. Significant R2 values were recorded for these regression equations which could be used with confidence for the prediction of post-harvest KMnO4-N, Olsen –P and NH4OAc-K. Using the predicted PHSTVs of hybrid brinjal soil test based fertiliser prescriptions for desired yield targets of any succeeding crop could be prescribed.


Keywords: STCR-IPNS, Inceptisol, PHSTVs prediction equations, Hybrid brinjal
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How to cite this article:

Kirankumar, Ch., R. Santhi, D. Srihari and Maragatham, S. 2019. Fertilizer Calibrations for Hybrid Brinjal based Cropping Sequence using Post-Harvest Soil Test Values Prediction Equations under Soil Test Crop Response Based Integrated Plant Nutrition System.Int.J.Curr.Microbiol.App.Sci. 8(7): 2051-2061. doi: https://doi.org/10.20546/ijcmas.2019.807.246