Bağda Yapraktan Zn Uygulamalarının Yapraktaki Besin Element İçeriklerine Etkisi

Abstract

The potassium fertilization is most important for a production of good quality in vineyard. Based on results from the studies carried out so far, it was understood that the potassium fertilization was required at amajor part of vineyard (50%) in Aegean region, especially Alasehir province and that it was unconsciousnessly treated from foliar. However, the leaf analyses was a mostapplicated method for determination of nutritional status of vineyards in addition to soil analyses. Therefore, this study was conducted to find out the effects of foliar potassium nitrate (KNO3) at different levels on the contents of mineral elements (N,P,K,Ca,Mg,Fe,Zn,Mn and Cu) of lamina and petiole leaf at Alasehir, Manisa, which is of a potential important in the production of Round Seedless cultivar. In experiment which was established with four replications, potassium nitrate (KNO3) was foliar-applied (0-0.5%-1.0%-1.5%-2.0%) in there times. Generally, the potassium nitrate positively affected on the contents of total N,P and K in the lamina and petiole of leaf when compared to control. The highest contents of N, P and K in lamina and petiole leaf was obtained from KNO3 application (%2) at largest level. The contents of Mg in lamina of leaf was negatively influenced by increased K applications. It was determined that potassium nitrate fertilization caused to be significant effects on the contents of other micro elements except the contents of Zn in lamina and of Mn and Cu in petiole of leaf. The significant increase for only content of Cu of lamina was obtained in comparison with control.