Experimental data on the variation of the relative proportion, yield, biochemical composition, and technological qualities of fractions of spring wheat grain grown against the background of increasing doses of mineral fertilizers are presented and discussed. It is shown that grains of different wheat fractions are unequal in terms of biochemical composition (protein content, crude gluten, and the value of the “falling number” indicator), as well as technological qualities (weight of 1000 grains, grain unit, vitreousness, and ash content). Increasing doses of mineral fertilizers had a significant effect on all the studied quality indicators of various grain fractions. At the same time, the dependences of the indicators of technological qualities and biochemical composition of grain on fertilizer doses (X) and grain thickness (X) are as closely as possible (in terms of R) reflected by the equations of multiple nonlinear regression. The exception was the dependence of the mass of 1000 grains, when it grew linearly with increasing doses of fertilizers and grain thickness. If the revealed dependencies of the main indicators of wheat grain quality on the doses of mineral fertilizers and grain thickness with genotypic (varietal) differences are confirmed, the data obtained can be used in the planting process.
Pasynkova et al. (Thu,) studied this question.