Nutrient uptake, Quality traits and Yield of Groundnut as Influenced by Integrated Phosphorus Management

Abstract

An experiment was conducted to study the integrated phosphorus management in groundnut (Arachis hypogaea L.) at Agronomy farm, S.K.N. College of Agriculture, Jobner (Rajasthan), having eleven phosphorus management treatments (Control, 100% RDF, 75% P through inorganic+25% through FYM, 75% P through inorganic+25% through VC, 75% P through inorganic+25% through PM, 50% P through inorganic+50% through FYM, 50% P through inorganic+50% through VC, 50% P through inorganic + 50% through PM, 25% P through inorganic+75% through FYM, 25% P through inorganic+75% through VC, 25% P through inorganic+75% through PM) and two microbial inoculation treatments (uninoculated and seed inoculation with PSB) during kharif season of 2017. Application of 50% P through inorganic+50% through VC significantly increased the nitrogen, phosphorus and potassium concentration in kernel and haulm, their uptake by crop and protein content (25.25% ), oil content (43.55%), oil yield in kernel (681.01 kg ha^-1) and pod yield (2198 kg ha^-1), haulm yield (3009 kg ha^-1) and biological yield (5207 kg ha^-1) over rest of the treatments But it showed statistical equivalence with 50% P through inorganic+50% through PM. PSB inoculation registered significantly higher concentration of N, P and K in kernel and haulm and their total uptake as well as protein content (24.25%), oil content (42.35%) and oil yield (604.90 kg ha^-1) in kernel, pod (2000 kg ha^-1), haulm (2659 kg ha^-1) and biological yield (4659 kg ha^-1) over uninoculated control.