Abstract
One form of sustainable agricultural activity that can be carried out is by implementing environmentally friendly agriculture, such as applying inorganic and biological organic fertilizers. The research aims to obtain a composition of NPK doses and biological organic fertilizer on red chili plants in reducing use of NPK fertilizer to support sustainable chili farming. The fertilizer provided is in the form of palm oil processing waste (sludge) and biofertilizer based on a bacterial consortium. The experimental design used in this research was a completely randomized design (CRD) with six treatments and four replications. The treatment given consisted of a composition of 100% NPK added petroganics (P1), added sludge compost (P2), a composition of 75% NPK added sludge compost (P3), added sludge compost + biofertilizer (P4), a composition of 50% NPK added sludge compost and biofertilizer (P5), and a composition of 25% NPK added sludge compost and biofertilizer (P6). Based on the results, the composition of 75% NPK added sludge compost + biofertilizer gave results relatively the same as the composition of 100% NPK + petroganic fertilizer in several parameters. This shows that sludge compost + biofertilizer can reduce the use of inorganic fertilizer by as much as 25%.
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