Identifikasi Kesesuaian Lahan Tebu di PT. Perkebunannusantara II Kebun Helvetia

Abstract

Sugarcane is one of comodity that produce sugar. Today, the decreasing of sugarcane productivity become problem for sugar industry. The decrease is due to some factors, one of them was land suitability. Land suitability has relation with productivity. PT.Perkebunan Nusantara II was the biggest sugar company in Sumatera Utara. But her product has been decreased seriously for few years. Sugarcane must be planted in suitable land with good condition for optimal production. Therefore, land suitability must be reviewed in PT.Perkebunan Nusantara II. Research had been conducted in June to September 2010. This research was using matching method where observed characteristics value were ploted on suitability land of sugarcane classes then a smallest class value of land suitability was decided. Parameters measured were temperature, rainfall, relative humidity, sunshine, drainage, texture, coarse material, soil depth, cation exchange capacity of clay, base saturation, pH (H2O), C-organic, salinity, alkalinity, slope, erosion hazard, pool, rock on surface, and rock outcrop. Results showed that land of sugarcane at Kebun Helvetia was included in S3 class (not suitable) where drainage system, base saturation, and sunshine became inhibitor characteristics, that had S3, S2, and S3 classes respectively