الفهرس 
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Abstract
5- SUMMARY
The present study was carried out to evaluate the effect of using different Zn source and rates on maize plants production in two locations of different textured soils. Growth parameters in addition to production constituents are considered in this study. Also, the study is dealing with the impact of using a forms of Zinc fertilizer (Nano ZnO, EDTA Zn and ZnSO4) on Maize yield and its quality.
The aim of this work was to evaluate the effect of three different Zn sources application [ZnSO4 as mineral, EDTA Zn as chelated and Nano ZnO, as nanoparticulate size with three foliar of rates on some chemical soil properties and its yield productivity, some yield parameters and some composition of plants grown in soils under study.