. The objectives of the research were to study effects of urea, active charcoal and zeolite on growth and yield of rice. The experiment was arranged in a factorial randomized block design with three replications. Factor of urea consisted of three levels, i.e. treatment without urea, urea 150 kg ha-1 and urea 200 kg ha-1. Factor of active charcoal consisted of two levels i.e. treatment without active charcoal and active charcoal 40 kg ha-1. Factor of zeolite consisted of two levels i.e. without zeolite and zeolite 200 kg ha-1. Results showed that urea exerted highly significant effects on plant height at age 30 days after transplanting (DAT) and 45 DAT, grain per plot, and exerted a significant effect on tiller numbers at 30 DAT. Active charcoal exerted significant effects on tiller numbers at 30 DAT and grain weight per plot, while zeolite exerted significant effect on tiller numbers at age 30 DAT. Significant interaction occurred between urea and active charcoal on tiller numbers at age 15 DAT; urea, activated carbon, and zeolite on tiller number at age 30 DAT; active charcoal and zeolite on productive tiller numbers