A field study was conducted to examine the effects of organic and inorganic fertilizers on growth and
yield of yard long bean, Vigna unguiculata Subsp. sesquipedalis L.. Three rates (14.5 g, 11.2 g, 17.8
g/plant) of organic fertilizer (poultry manure) and three rates (5 g, 3 g, 7 g/plant) of inorganic fertilizer
which is NPK blue special (12:12:17:2) were evaluated to study the growth and yield of yard long
bean. The experimental design used was Completely Randomized Design (CRD) with three
replications. The application of fertilizer had significant effect on number of leaves and plant height
but no significant effect on the chlorophyll content. The yield was also increased from two pods at a
rate of 7 g of NPK blue special/plant to 16 pods at a rate of 14.5 g of poultry manure/plant. This study
showed that the rate of fertilizer application for different types of fertilizers was not significant on the
growth and yield parameters of yard long bean. The use of poultry manure at the rate of 17.8 g/plant
was probably more suitable to elevate the growth and yield of yard long bean instead of using
inorganic fertilizer