Carbon-nitrogen interaction related to P, K, Ca, and Mg nutrients in field crops

Carbon (dry matter)-nitrogen relationship was expressed as DMt = DMo x exp(CNI x Nt) in Gramineae crops (including root cops), and DMt = DMo + CNI' x Nt in Leguminosae crops, where DMt is the amount of dry matter at various growth stages, Nt is the amount of nitrogen absorbed at various growth stages, DMo is the initial value, and CNI and CNI' are coefficients. Thus, since the carbon-nitrogen relationship was different between Gramineae and Leguminosae crops, it is expected that the accumulation processes of other minerals such as phosphorus (P), potassium (K), clacium (Ca), or magnesium (Mg) during growth would be different between Gramineae and Leguminosae crops if these nutrients are closely related to the carbon and nitrogen metablolism. As nitrogen is the most important nutrient for plant growth, the relationship between Nt and the amount of other minerals such as phosphorus (Pt), potassium (Kt), calcium (Cat), or magnesium (Mgt) absorbed in plants at various growth stages was examined in field crops