Grain quality depends on several main factors, among which protecting plants from pests at the grain formation stage and balanced nutrition are the most important, since the agronomist can control these processes. The country is quite large, so, unfortunately, the same recommendations on the last feeding cannot be given: in some regions harvesting is already under way, while in others the grain is still only at milk ripeness and it is possible to influence the formation of grain quality indicators. On fields where plant vegetation is still going on, feeding and protection operations can be combined. For crops on soils of light texture with insufficient macro- and microelement supply, it is advisable to add the complex fertilizer ECOLINE Cereal (Chelates) at 1.0–1.5 l/ha to the tank mix with the insecticide. In this period, on fields with a high level of nitrogen nutrition, to strengthen its uptake we recommend adding ECOLINE Phosphite (K) at 1.0 l/ha to the tank mix with the insecticide.