Utilization of fermented ngapi nut peel (Pithecellobium jiringa Prain) as natural fertilizer and pesticide on tomatoes (Solanum lycopersicum Mill) plant

Fermented Plant Extract (FPE) from the ngapi nut peel (Pithecellobium jiringa Prain) was produced as organic liquid fertilizer and pesticide to replace consumption of inorganic fertilizers and plant resistance for pests. FPE was fermented from the composition 250 g ngapi nut : 40 mL Effective Microorganism-4 (EM-4) : 40 mL brown sugar 1kg/L : 920 mL distilled water for 15 days, it contained Nitrogen 0.98%, Phosphor 0.05%, Potassium 0.62%, C.org 12.90%, phenolic content 414.1 mg/L and pH 3. The FPE was applied to planted tomato (Solanum lycopersicum Mill) and showed the best growth and plant resistance for pests. Macronutrient N, P, K, organic carbon in soil that treated and non-treated by FPE after 30 days were analyzed by Kjehdahl, Spectrophotometry and Atomic Absorption Spectrophotometry (AAS) method. FPE treatment could increase the amount of macronutrient in soil compared to the non-treated soil (control). Similarly, the nutrient (N, P, K) uptake by tomato with FPE treatment was higher than that with non-treated FPE. The nutrient uptake by tomato were nitrogen 2.62%; phosphorus 74.71%; potassium 42.44%; and non-treated with nitrogen 0.60%; phosphorus 27.07%; potassium 11.72%. (paper)