USING OF NANOTECHNOLOGY TO EVALUATE SOME POTASSIUM SOURCES AND METHODS APPLICATION ON SOIL AND PLANT

A field experiment was conducted on clay soil at Agriculture Research Center Station, Giza, Egypt, tomato (Solanum lycopersicum L., var. 448) plants were grown during the winter season of 2020-2021. Nanofertilizers prepared by ball-milling and investigated Transmission Electron Microscopy (TEM) measuring potassium fertilizer particle sizes. Four treatments apply as 100% recommended dose (traditional K fertilizer-control treatment) 60, 30, 10% NFs two sources KNFs K-humate(bio-source) K-gluconate(organo-source), methods foliar. The K-compound sprayed with 1000g/400 liter fed-1. aim this study improving use fertilizers applying nanotechnology, raising yields reducing loss. data appeared that yield their quality showed more response to foliar application, K-humate rate NFs, spray application reduced losses through depths.