RESPONSE OF COMPLETE FERTILIZATION BASED ON NUTRIENT INDEX TO IMPROVE RICE (ORYZA SATIVA L.) GROWTH RESPON PEMUPUKAN LENGKAP BERDASARKAN INDEKS GIZI TERHADAP PENINGKATAN PERTUMBUHAN PADI (ORYZA SATIVA L.) Section Articles

Abstract

Fertilizer is one of the main sources to increase the growth of rice plants. Provision of  fertilizers in accordance with the vegetative and generative needs of rice plants will be able  to increase the vegetative growth of rice plants, to see how the nutrients needed by rice  plants are sufficient or not can be seen by the soil nutrient index so that fertilization  effectiveness can be achieved. The purpose of this study was to provide N,P,K,Mg fertilizer  doses according to the vegetative and generative needs of the plants and to see the soil  reaction by looking at the nutrient index. The design of this experimental study was a  factorial Completely Randomized Design (CRD) with 2 factors and 3 replications. The first factor is the complete application of Urea, SP-36, Kcl, and dolomite fertilizer consisting  of: 0 g/plot; 549.574 g/plot; 824.36 g/plot; 1099.15 g/plot; 1373.94 g/plot. The second  factor is the soil nutrient index consisting of: 0.9 (dose reduced by 10%); 1 (Standard  nutrient index); 1.1 (Dose of fertilizer plus 10%) . The results showed that the application  of fertilizer based on the nutrient index had a significant effect on the growth of plant height  and the number of rice tillers. The addition of fertilizer in high doses of 1373.94 g/plot was  able to produce a maximum growth of 101.73 cm/plot and the number of tillers was 55.52  stems/plot. The results of the research on the interaction between fertilizer doses and soil  nutrient index combinations were best found in the P4B2 treatment on plant height and  P4B1 on the number of tillers.