Contributions of radiation interception and radiation-use efficiency to biomass decrease due to potassium starvation depend on potassium deficiency intensities

Yield loss due to insufficient potassium fertilizer supply has been well documented; however, the information about the negative effect of potassium deficiency on crop yield caused by ecophysiological determinants is not enough. A field experiment with three K treatments (severe K deficiency treatment, K1; moderate K deficiency treatment, K2; and sufficient K supply treatment, K3) was conducted to (1) assess the effects of potassium deficiency...