Nutrient uptake and yield of paddy cultivated under intensification with fish amino acid as liquid organic fertilizer

Abstract

Rice production in South Kalimantan, Indonesia, is still not optimal and needs to be increased. Increasing rice production can be done with the SRI (System of Rice Intensification) method. One of the needs for rice plant nutrients using the SRI method is by using Fish Amino Acid (FAA). The use of FAA as liquid organic fertilizer in organic rice cultivation has not been widely studied and needs to be developed. Therefore, this study was designed to determine the effect of FAA applications on P, K uptake, and rice productivity. The study was conducted in a greenhouse using a one-factor completely randomized design (CRD) consisting of five treatments, namely 0 (f0), 1 (f1), 3 (f2), 5 (f3), and 7 (f4) mL FAA L-1 . FAA applications have a significant effect on phosphorus uptake, plant wet weight, dry grain weight, and rice productivity of the SRI method, while the FAA application did not significantly affect potassium uptake, plant dry weight, and weight of 100 grains of rice using the SRI method. The best dose of FAA application on P, K uptake and rice productivity in the SRI method are found in the f1 treatment (1 mL FAA L-1) which can increase up to 30% dry weight and rice productivity compared to f0 treatment (control) and able to increase up to 20% phosphorus absorption of rice plants compared to f0 treatment (control).