Studies on nutrient uptake by rabi sorghum [Sorghum bicolor (L.) Moench] as influenced by fortified organics with iron and zinc

Abstract

A field experiment was conducted during rabi 2016 under rainfed condition on clay loam soil at All India Coordinated Sorghum Improvement Project, Main Agricultural Research Station, Dharwad (Karnataka). The experiment was conducted to study the effect of fortification of organics with iron and zinc in rabi sorghum under rainfed condition. The experiment was laid out in randomized complete block design with three replications and eleven treatments. Results of the study revealed that soil application of RDF + Enriched FYM 1 recorded significantly higher nitrogen uptake (57.19 and 42.03 kg/ha), phosphorous uptake (23.13 and 24.14 kg/ha), potassium uptake (20.08 and 44.96 kg/ha), sulphur uptake (11.14 and 10.55 kg/ha), iron uptake (161.16 and 305.66 g/ha) and zinc uptake (116.27 and 213.21 g/ha) by grain and fodder respectively over control, recommended dose of fertilizer and recommended package of practice. Whereas, soil application of RDF + Enriched vermicompost 4 recorded significantly higher iron and zinc content both in grain (39.52 and 28.44 mg/kg) and fodder (42.34 and 29.44 mg/kg) respectively.