Abstract:
This research was conducted in the Experimental Field, Faculty of Agriculture, Riau Islamic
University and Soil Laboratory, BPTP Riau Province from October 2008 to February 2009. The
research aim to study the effect of bokashi and NPK organic fertilizer to N, P, K uptake of rice in
Ultisol with SRI (System of Rice Intensification).The experimental with Completely Randomized
Design for Factorial 4 x 4 were used. The first factor was bokashi fertilizer addition, consisting of
four levels (0, 10, 20, 30 ton ha-1) and second factor was organic NPK fertilizer addition,
consisting of four levels (0, 200, 400, 600 ha-1). The result of research indicates that: (1)
Interactian effect of treatment was significant to N, P, K uptake; (2) The best treatment was
addition of bokashi (30 ton ha-1) and organic NPK fertilizer (600 kg ha-1), with uptake of N (371
mg/plant), P (102 mg/plant), K (128 mg/plant
