ABSTRACT
The present investigation was conducted in transgenic cotton under drip fertigation: (i) to study the significant relationship between soil test values and crop response to fertilizers; (ii) to develop fertilizer prescription equations under IPNS (Integrated Plant Nutrition System) for desired yield target of transgenic cotton; and (iii) to test the validity of fertilizer prescription equations developed for transgenic cotton under drip fertigation. To conclude, soil test-based IPNS for desired yield targets of transgenic cotton was developed on Vertic Ustropept of Tamil Nadu under drip fertigation considering the nutrient requirements and contribution of N, P, and K from various nutrient sources (soil, fertilizer, and FYM). This envisages a balanced nutrient supply to transgenic cotton, which is site specific and can play a major component of precision agriculture.
