National Academy of Agricultural Sciences (NAAS)
|
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 |
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.
Citations |
 |
 |
 |
 |
