Madras Agricultural Journal
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RATIONALIZED FERTILISER PRESCRIPTION FOR SUNFLOWER BASED ON SOIL TEST CROP RESPONSE STUDIES

Abstract

Field experiments were conducted with maize as a gradient crop and sunflower as test crop in Inceptisols of Lower Bhavani project area at Agricultural Research Station, Bhavanisagar, Erode District. The concept of fertiliser prescription for specific yield target was adopted for optimizing the fertiliser dose for sunflower. A soil test calibration and fertiliser prediction for an yield target of 20 and 25 quintal of sunflower seed for KMnO-N, Olsen-P and Morgans Reagent-S were worked out.

Keywords: Fertility gradients, Nutrient requirement, Soil and fertiliser efficiency, Yield targets, Fertiliser prescription equation

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ISSN : 0024-9602
eISSN : 2582-5321

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