The increment of the usage of commercial fertilizers caused high production cost and damage of environment in agricultural sector nowadays. The research was done to
test the fertilizing effect of frass in different forms and the effect of different dosages applied on the plant growth of Vigna radiata. The experiment was carried out using frass in both suspension and solid form with five different dosages. Chlorophyll content, stem diameter, plant height and plant weight were recorded as plant growth parameters to test the effect of frass towards the plant performance. The result showed that there was no
significant difference (p >0.05) between the effect of the solid insect frass and suspension form of frass. In contrast, the dosages applied to the plants gives significant effect on the plant growth however there are no significant difference between the treatments. The
frass of Blaptica dubia showed positive potential as plant fertilizer.