Abstract :
This research has been carried out in the Experimental Garden of the Faculty of Agriculture, Riau Islamic University, Jalan Kaharuddin Nasution Km 11, No.113, Air Dingin Village, Bukit Raya District, Pekanbaru City, Riau. This research was conducted in April to July 2019. The purpose of this study was to determine the effect of the interaction and main fertilizer of Petroganik and Grand K on the growth and production of peanut plants. The design used is a Factorial Complete Random Design which consists of two factors. The first factor is Factor P (Petroganik) consisting of 4 levels of treatment and the second factor is K (Grand-K) consisting of 4 levels of treatment so that there are 16 treatment combinations. Each treatment consisted of 3 replications, so there were 48 experimental plots, each consisting of 12 plants and 3 plants as observational samples, the total number was 576 plants. Data from the latest observations were analyzed by variance (ANOVA) and tested for truthfully significant differences (BNJ) at the 5% level. The results showed the interaction of Petroganik and Grand K fertilizers affected plant height, relative growth rate and weight of 100 seeds. The best combination of treatment in the administration of Petroganic fertilizer is 81 g / plot and Grand K fertilizer is 14 g / plot (P3K2). The main effect of Petroganik fertilizer affects all parameters observed with the best treatment is the administration of 81 g / plot (P3) Petroganik fertilizer. The main effect of Grand K fertilizer on all parameters observed with the best treatment is the administration of Grand K fertilizer of 14 g / plot (K2).