Alley cropping in immature oil palm

Limitation of planting area can be managed by optimizing the immature with alley cropping. The purpose of this research is to analyze the increase in crop productivity with a variety of fertilizer doses and analyze dosage used on intercrops. The experiment was conducted at KUD Tunas Muda, Siak Regency, Riau, November 2018 until March 2019. This experiment used a nested randomized complete block design (RCBD) the treatment consisted of two treatment factors, fertilization treatment as the main factor and crop treatment as a sub-plot. Fertilization treatment consisted of three levels, P1 (fertilizer recommendation), P2 (manure 5 tonsha−1 + 1/2 fertilizer recommendation) and P3 (manure 2.5 tonsha−1 + 1/2 fertilizer recommendation). The treatment of plants consisted of four levels, T1 (without the crop), T2 (soybean monoculture), T3 (intercropping corn + soyben (1:2)), T4 (monoculture corn). The intercropping pattern in oil palm plantations can increase land productivity. The soybean intercropping patterns affect yield components. The P3 treatment (2.5 tonsha−1 manure + 1/2 recommended fertilizer) is the optimum fertilizer dosage for corn and soybean cultivation in the oil palm area (TBM-1) by intercropping based on the results of the land equality ratio of 1.76.