Nawożenie azotem a stopień uszkodzeń rzepaku ozimego przez szkodniki

On the basis of three-year studies, findings of nitrogen fertilization influence (40, 80,120,16 and 200 kg/ha) on the damage degree of winter rape caused by insectpest, abiotic stress and i diseases when a lack of protection against insecticides have been investigated. The damage degree of shoots and generative organs of winter rape caused by insecticides an paralysis by Botrytis cinerea has increased when the level of nitrogen fertilization increased. Thrawing away of flower buds and flowers by rape under the influence of abiotic stress and tt paralysis caused by Sclerotina sclerotiorum has been diminished as the nitrogen dose increase! When more abundant nitrogen fertilization has been applied the enlarged regeneration of damage rape generative organs has not been stated.