EFFECT OF SOME NANO PARTICLE MATERIALS ON LEAF AREA, PHOTO SYNTHETIC PIGMENTS AND MINERALS CONTENT OF MANGO TREES

Abstract

This study was carried out during the two growing consecutive seasons 2015 / 2016 on mango trees (Mangifera indica L.) cvs. Zebda and Ewasy, grown in a private orchard at Wadi El-Muolak, Sharkia Governorate, Egypt to evaluate the effect of foliar chitosan and potassium silicate components nano or not nano particle at 15 February before flowering on average leaf area and leaf content of pigments and minerals. Ewasy cv. displayed the highest of their tested attributes in most cases A, B, total Chlorophyll and leaf mineral content compared with Zebda cv. The obtained showed that the tested treatments improved leaf characteristics especially nano chitosan 50 and 150 ppm treatments which increased Chlorophyll B, total Chlorophyll as well as leaf mineral content in leaf. Furthermore, the trees were sprayed with nano-silica 0.6 and 0.8 g/L showed the highest average leaf area Chlorophyll A and caroteniods pigments in leaf. Conclusively, from results of this research, the resembling conditions that spraying mango trees nano- nano chitosan 50 and 150 ppm nano-silica 0.6 and 0.8 g/L before flowering is desirable for improving leaf characteristics it is recommending, under Belbeis district, Sharkia Governorate, Egypt