Pengaruh Penambahan Konsentrasi Poc Pada Larutannutrisiabmixterhadappertumbuhan Bibit Kelapa Sawit (Pre Nursery) Pada Hidroponik Sistem Wick

Abstract

REALINA SANRIANA SARAGIH, The Effect of Adding Organic Fertilizer (POC) to the Nutrient Solution AB Mix on the Growth of Oil Palm Seedlings (Pre Nursery) in the Hydroponic Wick System. (Supervised by ROSMAYATI, Chair of the Advisory Committee, and HAMIDAH HANUM, Member of the Advisory Committee). Problems in conventional oil palm nursery systems, such as nutrient limitations, land dependence, and pest infestation, have encouraged the adoption of hydroponic systems as a sustainable alternative. This study aims to evaluate the effect of applying liquid organic fertilizer (POC) from goat manure and straw waste on the growth of oil palm seedlings (pre-nursery) using the hydroponic wick system. In hydroponic systems, water-soluble inorganic fertilizers such as AB Mix already contain a complete range of macro and micronutrients that are easily absorbed by plants. However, to support the principles of sustainable agriculture, this study uses liquid organic fertilizer (POC) as an alternative. The study was conducted in a greenhouse for 3 months using a non-factorial completely randomized design (CRD) with 7 treatments and 3 replications, involving AB Mix (control, AB Mix and goat manure POC concentration and AB Mix mixed with Straw waste POC with concentrations of 400 ppm, 800 ppm and 1,200 ppm, respectively). Observed variables included plant height, number of leaves, stem circumference diameter, leaf width, leaf chlorophyll, root length, dry weight of the crown and dry weight of the root. The results showed that the AB Mix treatment provided the best vegetative growth compared to goat manure POC and straw waste POC. Goat manure POC showed more stable growth than straw waste POC. The best concentration of goat manure POC was 400 ppm which was able to support the vegetative growth of pre-nursery oil palm seedlings. The best concentration of straw waste POC was 800 ppm which produced the highest vegetative growth and chlorophyll content in pre-nursery oil palm seedlings.