The methods of water stress negative effect reduction in winter rapeseeds

The article presents the results of the influence of nitrogen mineral fertilizers and multifunctional feeding Helafit Combi® in different periods of use (early spring feeding and leaf foliar feeding) in winter rape sowing on the level of leaf vegetation. It is proved that the coefficient of water consumption significantly decreased after fertilizing and the use of the growth regulating feedings. Neither fertilizers in the form of early spring feeding, nor leaf treatment with Helafit Combi® alone did not affect the growth and development processes, but their combination. If the treatment of plants with N60 reduces the water consumption by 3.6%, and the treatment with Helafit Combi® reduces this figure by only 2.7%, then the synergistic effect can be observed in their complex action (water consumption decreases by 9.3%, and optionally from N90 + Helafit Combi® - by 14.5%). After fertilization with the N90 dose, the maximum level of crop yield was achieved, and in the complex with foliar feeding with Helafit Combi® there was achieved increase in yields of up to 1,3 t/ha or 56%.