The research aim is to study the effect of application of rice straw trichocompost on the growth and yield of pakcoy. This research was conducted in experimental garden of agriculture faculty , Universitas Riau from January to March 2019. The experiment used a Completely Randomized Design (CRD), the treatment is rice straw trichocompost (RST) consisting of 5 level (0, 5, 10, 15 and 20 t RST/ ha…