Effect of organic fertilizer on nitrogen uptake and yield of two different rice varieties in inceptisol, Kalitirto

Abstract

Nitrogen is the most limiting element for organic crop production. Hence, application of organic fertilizer is one of the key factor to enhance productivity and improve soil quality, especially in organic farming. The aim of this study was to evaluate the effect of organic fertilizer application on Nitrogen uptake and yield of two different rice varieties. Field experiment was conducted using Randomized Completely Block Design (RCBD) with two factors and three replications. The first factorwasvarious fertilizers (P) i.eNeem cake (Azadirachtaindica) 5 tons ha−1, Azollamicrophylla 5 tons ha−1, cow manure 5 tons ha−1 and inorganic NPK fertilizer 225 Kg ha−1 as a comparison. Second factor wasrice varieties (V) i.e var. Ciherang and var. Menthiksusu. Plots without fertilizer treatments were served as control. The results showed that treatments were not significantly affected N available and N uptake. Higher Nitrogen uptake and grain yield were showed by Neem cake and var.With considerably high Nitrogen uptake and rice grain yield, combination between Neem cake and rice var. MenthikSusu have a prospect as a solution to maintain soil quality and yield in organic farming.