Effectiveness of Dried Cow Dung on Leaves Garbage Decomposition in Khon Kaen University

Abstract

This research was an Quasi-experimental research. The objectives of this study were to investigate the effectiveness of dried cow dung on leaves garbage decomposition with different types of leaves garbage (Tectona grandis and mixed of Tectona grandis, Terminalia catappa and Dipterocarpus alatus), mixing form of dried cow dung (sprinkle and mix), and ratio dried cow per leaves garbage different and study the amount of nitrogen, phosphorus and potassium after the completed decomposition. This study was conducted during February to May 2019.

The result of study showed that the decomposition time of all the experiments with sprinkle dried cow dung and all the experiments with mixed dried cow dung were 50 days and 49 days, respectively. After the completed decomposition, the volume of the experiments was decreased about 12.21% to 27.21%. The decomposition study result of difference ratio of dried cow dung and difference leaves garbage (by weight) at 1:1, 1:2 and 1:3 showed that the highest percent of Nitrogen and Phosphorus were found in the compost of the mixed leaves garbage with sprinkle dung at 1.62±0.09 and 0.48±0.07respectively. While the highest percent of Potassium was found in the compost of Tectona grandis leaves garbage with mixed dung at 1.59±0.14. The percent of Nitrogen, and Potassium in all experiments were higher than those mentioned in the organic fertilizer standard of the Department of Agriculture, but the Phosphorus was lower than the organic fertilizer standard.