Abstract
Field experiments were conducted on a Typic Rhodustalf (Palaviduthi soil series) soil of Southern Zone of Tamil Nadu by adopting the inductive-cum-targeted yield model, and fertilizer requirements were quantified for glory lily based on soil test and yield target. The basic parameters viz., nutrient requirement (NR) and contribution of nutrients from soil (Cs), fertilizer (Cf) and farm yard manure (Cfym) were computed from the field experimental data. Using the basic parameters, fertilizer prescription equations were developed based on integrated plant nutrition system (IPNS), and nomograms were formulated for desired yield target of glory lily for a range of soil test values. The extent of saving of inorganic fertilizers for glory lily was computed using the fertilizer prescription equations under IPNS. The estimates showed that for the application of FYM @ 12.5 t/ha with 25% moisture and 0.528, 0.261 and 0.501% of N, P and K, respectively, when applied along with the N, P and K fertilizers as per soil test and desired yield target, the saving was 35, 22 and 30 kg of fertilizer N, P2O5 and K2O, respectively.
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