Pengarnh Pemberian Kompos Bagase terhadap Serapan Hara dan Pertumbnhan Tanaman Tebu (Saccharurn officinmum L.)

Abstract

The eflect of bagase compost application on nutrient uptake and growth of sugarcane was studied at PG Jatitujuh, Majalengka, West Java, *om October 1998 to March 1999. The experiment was arranged in split plot design with three replications. The bagase compost as sub plot and the recommended m e of inorganic fertilizer as the main plot. The rates of bagase compost were 0.0, 2.5, 5.0, and 7.5 todha and the recommended rate of inorganic f-ertilizers were loo%, 75%, and 50% of recommended rate. The recommended rate of inorganic fertilizer was 300 kg Urea, 200 kg ZA, 150 kg SP-36, and 200 kg KCUha. The m l t s showed that bagase compost application at 7.5 todha signifcantly increased nitrogen upthkz at 3 Month After Planting (MP) compared to no compost, but did not afect P205, K20 and S. Lower rate of inorganic fertilizer decreased S uptake at 2 M A , but did not afect N, P2O5 dan K20. Combination of 5.0 tonlha compost bagase with 100% recommended rate of inorganic fertilizer tended to increase sugarcane growth. Bagase compost application with inorganic fertilizer did not affect the percentage of growth, height, and diameter of stalk