Abstract
Ultisolss are one of the marginal soil types that dominate drylands in Indonesia. The main problem of Ultisolss is poor nutrient conditions and low physical properties. The productivity of this soil is low because it has low soil aggregate stability and also has poor biological and physical properties. Research on superior cellulotic microbes in termite nests used as a starter for the decomposition of agricultural waste and changes in the physical properties of Ultisols soil needs to be carried out to determine the effect of applying the type and dose of compost resulting from the degradation of cellulotic microbes to improve the physical properties of Ultisols soil. This experiment was conducted from July 2019 to September 2021 at Ciparanje Experimental Farm, Faculty of Agriculture, Univesitas Padjadjaran. The method used was experiment with Randomized Block Design consisting of 9 treatments and repeated 3 times, namely straw compost 5 tons/ha, 10 tons/ha, 15 tons/ha; sugarcane bagasse compost 5 tons/ha, 10 tons/ha, 15 tons/ha; oil palm empty fruit bunch compost 5 tons/ha, 10 tons/ha, 15 tons/ha. Based on the research of compost degradation results by cellulotic microbes, rice straw compost 15 tons/ha can provide the best aggregate stability results.
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