Effect of different combinations of organic and chemical fertilizers on yield of turmeric (Curcuma longa L.) and soil fertility status of alluvial soil

Abstract

A field experiment was conducted during 2024-25 in kharif season to evaluate the effect of integrated use of chemical fertilizers and organic manure on yield of turmeric (Curcuma longa L.) and soil properties. Experiment was comprised in ten treatments and three replications with RBD design. The chemical nutrient source included RDF (N: P: K) with sulphur and organic nutrients sources were included FYM, poultry manure and compost applied in different rates per plot. Organic sources of nutrients and RDF applications revealed that FYM @40 tha-1 + 100% RDF (T3) recorded maximum fresh rhizome yield (tha-1) as compared to T10 (poultry manure @ 20 tha-1 + 75% RDF). Integrated use of organic and 100% RDF sources found to maintained soil pH in considerable range and EC. At 90 DAP have considerable response and in post-harvest soil samples were found to be increased available N (283.29 kgha-1), available P (17.47 kgha-1), available K (299.04 kgha-1) and available S (5.51 mgkg-1) in soil by application of FYM @40 t ha-1 (T2), compost 75% + 100% RDF (T7), 100% RDF + compost @ 20 t ha-1 (T5) and FYM @40 t ha-1 + 100% RDF (T3) significantly.