IMPACT OF FOLIAR FERTILIZER ON PHYSIOLOGICAL COMPOUNDS IN DIFFERENT APRICOT VARIETIES

In the last decade applying of nutritive elements by foliar spraying became a usual practice for many crops, with benefit part in balancing of plant nutrition. Also, foliar fertilization have a practical and economical importance and have a low risk for environmental pollution. Implication in physiological processes, and in general in the plant metabolism of nutritive substances adsorbed by the leaves have an important role in increasing the adaptative capacity of trees to the stress conditions and therefore for growth production. The influence of foliar fertilizer on physiological and biochemical parameters of different apricot varieties was studied during two seasons at experimental orchard of Research Station Baneasa. Results indicated the increase of photosynthetic pigments content proved by a better function of photosynthetic apparatus. It also was found that polyphenolic compounds increased, which denotes the activation of tree defence mechanism for a better stress resistance.