Effect and Effectivity of Granular Organic Fertilizer on Growth and Yield of Lowland Rice

The tendency to use inorganic fertilizers in very high doses has causesvarious negative impacts, namely damage to ecosystems, loss of soil fertility to health problems. Therefore, the use of organic fertilizers is encouraged to overcome these problems. The purpose of this study was to determine the effectiveness of Granules Organic Fertilizer (GOF) on the growth and yield of rice plants. The design used was a Randomized Block Design (RBD) with three replications and eight treatments. The GOF treatment was arranged in six levels: 1 000 kg ha–1 to 6 000 kg ha–1 , combined with Urea 300 kg ha–1 and Phonska 300 kg ha–1 , one standard fertilization treatment (Petroganic 2 000 kg ha–1 + Urea 300 kg ha–1 and Phonska 300 kg ha–1 ) and one treatment without fertilization as a control. The results showed that GOF had a significant effect on the growth and yield of rice plants. The use of GOF 3 000 kg + 300 kg Urea + 300 kg Phonska gave the highest grain yield of 7.21 t ha–1 with RAE value of 116 % or an increase of 7.45 %, and with an R/C ratio of 1.4.