Key points are not available for this paper at this time.
The judicious use of different organic and inorganic nutrient sources is of prime importance for enhancing the productivity of long-duration and nutrient-exhaustive crops, including sugarcane. We aimed to assess the impact of optimum nutrient application through integration of bio-products and inorganic fertilizers on growth, yield of sugarcane, and N availability in sugarcane plant crops raised through bud chip settlings. The fifteen treatment combinations were replicated three times in randomized block design. Results revealed that 150% of RDF + 5 t vermicompost ha−1 + 25 kg ZnSO4 + Azotobacter + phosphate solubilizing bacteria recorded the highest growth in terms of plant population, drymatter production, cane diameter, millable canes and single cane weight; cane yield (138.7 t ha−1) and net returns (Rs. 2, 62, 600 ha−1) followed by 150% RDF + 5 t vermicompost + 25 kg ZnSO4 ha−1 in sugarcane. However, maximum benefit: cost ratio was evidenced with 150% RDF alone (1.80) and lowest in RDF + 5 t vermicompost ha−1 (0.78), respectively. NO3-N, exchangeable NH4+-N, hydrolyzable NH4+-N were found to represent about 20.5 to 30.9, 41.5 to 73.8, 55.8 to 76.8 mg kg−1, respectively. The relative contents of these fractions were in the order: non-hydrolysable > unidentified N > amino acid N > hydrolyzable NH4+-N > exchangeable NH4+-N > NO3-N > hexose amine N. Thus, the integration of organic sources with NPK holds great promise to increase cane yield and N availability in soil but with 150% RDF proved to be more remunerative and economically sound for the bud chip raised sugarcane.
Kumar et al. (Mon,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: