Productivity of Wheat As Affected by Chelated and Nano Zinc Foliar Application and Nitrogen Fertilizer Levels تأثر إنتاجیة القمح بالرش الورقی بالزنک المخلبی والنانو ومستویات السماد النیتروجینی

The most important feature of  nanotechnology in the development process of agriculture is Nano fertilizers at the 1-100 nm nanometer scale. Where, the use of nano fertilizers instead of common fertilizers provides plants with nutrients progressively and in a regulated manner, the quality of application increases, contamination decreases and the risk of chemical fertilization decreases. Therefore, Two field studies have been carried out in a private field in Derwatine Village, Nabarouh Center, Governorate of Dakahlia, Egypt, during  2016/2017 and 2017/2018 Seasons to research the impact of foliar application of chelated and nano zinc (without, spraying with chelated zinc at the rate of 2 g/liter and nano zinc at the rate of 200, 400 and 600 mg/L), nitrogen levels (100, 80 and 60 % of the recommended dose i.e. 80, 64 and 48 kg N/fed, respectively) as well as their interaction on productivity of wheat Gemmiza 12 cultivar. The experiments were conducted with three replicates in a strip-plot configuration. Five zinc foliar application treatments were given to the vertical-plots. The horizontal-plots were allocated three nitrogen levels.