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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
IJCMAS is now DOI (CrossRef) registered Research Journal. The DOIs are assigned to all published IJCMAS Articles.
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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 2019: 96.39
Index Copernicus ICI Journals Master List 2019 - IJCMAS--ICV 2019: 96.39
For more details click here

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Original Research Articles

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.2017.6(6): 241-249
DOI: https://doi.org/10.20546/ijcmas.2017.606.029


Development of Critical Limits for Different Crops Grown in Different Soils and Its use in Optimizing Fertilizer Rates
P.N. Siva Prasad1*, C.T. Subbarayappa2, M. Raghavendra Reddy and Hari Mohan Meena3
1Department of Soil Science and Agriculture Chemistry, GKVK, UAS (B),Karnataka-560065, India
2Department of Soil Science, GKVK, UAS, Bengaluru-560065, Karnataka-560065, India
3Department of Soil Science and Agriculture Chemistry, GKVK, UAS (B),Karnataka-560065, India
*Corresponding author
Abstract:

Soil testing is a useful tool that can help to ensure the efficient use of applied plant nutrients. Soil tests measure the quantity of a nutrient that is extracted from a soil by a particular extractant. The measured quantity of extractable nutrient in soil is then used to predict the crop yield response to application of the nutrient through fertilizer, manure and any other amendments. As soil test levels increase for a particular nutrient, the expected crop yield response to additions of that nutrient decreases. A good soil test should be able to predict the amount of plant-available nutrient as well as the fertilizer responsiveness of plant growing on a wide range of soils. Predicting of plant response to fertilizers is traditionally determined by Cate-Nelson graphical and Statistical method. The concept of critical limit distinguishes deficiency from sufficiency, which could be employed to advice on need for nutrient fertilization. The critical limits are quite often employed for a wide variety of soils and crops and these critical limits differ not only for soils, crop species but also for different varieties of a given crop.


Keywords: Soil testing, Fertilizer, Extractants, Critical limits and plant response
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How to cite this article:

Siva Prasad, P.N., C.T. Subbarayappa, M. Raghavendra Reddy and Hari Mohan Meena. 2017. Development of Critical Limits for Different Crops Grown in Different Soils and Its use in Optimizing Fertilizer RatesInt.J.Curr.Microbiol.App.Sci. 6(6): 241-249. doi: https://doi.org/10.20546/ijcmas.2017.606.029