Effect of phosphorus on the growth and uptake of fertilizer P by mungbean in different soils of Bangladesh using 32P labelled superphosphate

A pot experiment was carried out to find out the effects of P on the growth and yield of mungbean and to evaluate the P status in soils collected from 15 locations of Bangladesh using various rates of 32P labelled superphosphate. Results indicated that P addition increased both straw and grain yields of mungbean on soils of various locations. Phosphorus concentration and the yield of P by plants also tended to increase due to P application. Spectacular increase in the uptake of applied P was recorded with the increasing rates of P application whereas, the uptake of soil P was reduced. 'A' values also tended to increase with the rates of P application. However, the correlation coefficient (r = 0.988) between the mean 'A' values and the NaHCO3 soluble P in all soils was highly significant. (auth.)