One of the problems that farmers face on Terigas tangerine in Sambas Regency, West Kalimantan is the low fruit quality. It is believed that it is caused by extreme fluctuation of moisture level, temperature, soil moisture, and nutrition absorption.The aim of this research was to obtain good quality tangerine through the reduction of moisture level fluctuation, temperature, soil moisture, and sufficient nutrition for plants. This research was conducted in Sambas Regency. Research design used was Split Plot Design, which consisted of two main plots, i.e. land with flooded trench and land with unflooded rench. Whereas, the three sub-plots were: 1) inorganic fertilizer (farmer’s technology), 2) inorganic fertilizer + organic fertilizer + mulch, and 3) inorganic fertilizer + organic fertilizer + mulch + (Ca + B). This research used four replicates with ten trees per experimental unit.The results showed that flooding the trench during dry-season and followed by fertilization was able to increase the fruit quality of Terigas tangerine. Those fruit quality were fruit dehiscent, fruit diameter (grade), acid level (%), and sugar content fruit.