Pengaruh Pemberian Pupuk Organik Cair Jakaba Terhadap Produktivitas Rumput Raja (Pennisetum Purpuhoides)

Abstract

King grass is a type of superior grass that is easy to cultivate and has high production potential and nutritional content. The obstacles that often occur in the cultivation of king grass include the use of inappropriate fertilizers on marginal soils such as ultisol soils. POC Jakaba is a liquid organic fertilizer made from fermented rice washing water. The purpose of the study was to determine the effect of Jakaba liquid organic fertilizer with different doses on the productivity of king grass (Pennisetum purpuphoides) on ultisol soil media. The research was conducted at the Greenhouse & Field Laboratory of the Faculty of Agriculture, University of North Sumatra and the analysis of Jakaba POC was carried out at the North Sumatra Agricultural Instrument Standardization Agency (BSIP). The research was conducted from September to December 2024. This study used a completely randomized design (RAL) with 5 treatments namely P0 = No POC Jakaba, P1 = 25 ml/liter of water, P2 = 50 ml/liter of water, P3 = 75 ml/liter of water and P4 = 100 ml/liter of water with 4 replications. The observed variables were plant height, leaf length, number of tillers, fresh weight production and dry weight production. The results of the study with the addition of POC Jakaba gave a significantly different effect on plant height, number of tillers, fresh weight production, dry weight production and significantly different on leaf length. The addition of POC Jakaba with the best results was obtained in the P4 treatment (100 ml/liter of water). The higher the dose of POC Jakaba the plants tend to give an increase for all parameters.