The residual of ameliorant formulation from local resources on chemical properties of inceptisols and production of green bean (Phaseolus vulgaris L.)

Abstract

Ameliorant based on local resources is an alternative solution to farmers in sustainably optimise agricultural waste. This study aimed to determine the residual ameliorant formulation from a local resource on the chemical properties of Inceptisols and the production of green beans (Phaseolus vulgaris L.) in central horticultural production of Banuhampu Agam, West Sumatra. This study used a Randomized Complete Block Design (RCBD) with eight treatments and three replications, namely: [A]=Control; [B]=Bamboo biochar (BB)+Tithonia Green Fertilizer (TGF)+Chicken Manure (CM)+Agam Compost (CA); [C]=BB+TGF+CM; [D]=BB+TGF+CA; [E] = BB+CM+CA; [F]=TGF+CM+CA; [G]=Farmer’s tradition (FT) and [H]=Ministry of Agriculture recommendations (MAR). Residual formulation of ameliorant from local resources had a significant effect on chemical properties of Inceptisols (pH, EC, CEC, OC, total N, available P) and total yield (kg plot−1) and % P in green beans, compared to control. Residual ameliorant formulation from local resources (TGF+CM+CA) had improved OC (0.88; 0.72 and 0.56% C) in Inceptisols and total yield (8.30; 5.10 and 4.90 kg plot−1) and 0.002; 0.007 and 0.006% P in green beans, better than the control, FT and MAR. The application of local resource-based amelioration technology is very significant to land optimisation, especially OM.