Soil Quality in Cultivation Land of Snakefruit (Salacca edulis) in Ledoknongko, Bangunkerto Village, Turi, Sleman Yogyakarta Indonesia

This study aims to calculate the soil quality index on snakefruit cultivation, so the characteristics and soil quality of the land in the research location are known. The research was conducted in Bangunkerto Village, Turi District, Sleman Regency, Yogyakarta Indonesia using a survey method, sample points was determined by specific objectives (purposive sampling). There are three observation blocks were obtained, which is: block I (certified organic snakefruit cultivation land); block II (snakefruit land with conventional farming systems) and block III (a land that was not used as cultivation) as control. Block I and II are each divided into 4 plots so there are 8 observation plots were obtained, also 1 plot as control with 3 sample point. The parameters were root depth, bulk density, earthworms, soil microbes, porosity, C- organic, the percentage of silt+clay, pH, available N, available P, available K. Soil quality index determined using Mausbach & Seybold method. The results showed that the soil quality index in block I was 0.642 with good criteria, block II was 0.532 with moderate criteria and block III was 0.452 with moderate criteria. Snakefruit land with organic farming systems shows better soil characteristics compared to conventional land in terms of root depth, microbial count and soil porosity, while conventional land shows higher levels of macro nutrient availability (nitrogen and phosphorus) and the control block shows the number of earthworms/ m2 which is better than other blocks.