| Thailand is a country located on the tropical agriculture. Natural soil fertility is low. Low organic matter content. Due to the rapid degradation of the heat and humidity. Therefore,the concept adding of organic material and reduced tillage to improve soil properties for the better. The study on the effects of tillage systems on changes in soil chemical properties of rice. The experimental design was Randomize Complete Block Design (RCBD) 5 treatments. 1) tillage (control) 2) tillage with sunnhemp incorporation 3) tillage with rice straw incorporation 4) no tillage with sunn hemp mulching 5) no tillage with rice straw mulching. Soil samples were collected during the period, before transplant and 2 weeks after harvest. The soil reaction, electrical... |
