الفهرس 
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Abstract
The aim of this study was to apply the modern applications of laser science and notechnology inplantfoliarfertilization.To satisfythis object the field experiment as conducted on tomato plants, cultivated in clayey soilwith furrow irrigation.icronutrients were used as foliar fertilization in the form of nanoparticles[(nano-ides) (NPs)]by Sigma Aldrich Int. Coand compared its effect with controlntreated plants) and fractions from normal recommended of traditional formsineral salts) as (NPs at 10%RD, NPs at 25%RD, NPs at 50%RD, NPs at 75%RD d NPs at 100%RD). The studied parametersduring this experiment were growth,eld, days to flowering, quality properties and soil characters after plant removal.lso some optical propertiesof tomato samples were studied by measuring laser reflection intensity The obtained results reveal that the tomato parts dry matter, yield of fruits, and me qualityproperties including pigment content (Chlorophyll and lycopene), total gars and total soluble solids (TSS) greatly increased, in general with additions of cronutrientsforms. During nanoparticle treatments, the most effective treatments with the rate of half dose from minerals at recommended dose (NPs at 50%RD).ineral forms in normal recommended dose (MNRD) gave nearly equal effect with Ps at 50%RD. The minimum number of days was accompanied with (NPs at%RD) followed by (MNRD).Evaluation of nutritional status of shoots, roots and its of cultivated tomato plants at flowering and reproduction stages, showed a sitive action for foliar application of micronutrients especially with mineraltilization at normal recommended dose (MNRD) and nanoparticles in the rate of lf dose of mineral fertilization in normal recommended dose (NPs at 0.50RD). out soil analysis after plant removal, there was a line relationship between growtt hancements and some soil characters such as; available nutrients, electrical nductivity (EC) and soil acidity. While values of soil organic matter content were ated negatively with the plant growth status, because of the degradation.The tical properties were measured by luxemeter as indications for reflection intensity laser beam fortomato parts sample. The obtainedresults were high with the atments characterized with strong growth and vice versa, there were attributed to improvement in plant pigments. from aforementioned results, it can be concluded that, the foliar application of micronutrients in the form of nanoparticles presented equal effects with mineral forms in the rate of half concentration from recommended dose. By these results I nanoparticles application may save the amount of agrochemical used in The low quantities of nanoparticles were more effective than higher from source (mineral source) may be due to thatthe pathway of nanoparticle fundamentally from ions pathway of mineral source. Nanoparticles pat reach the target sites of plant without facing retarding factorssuch as pe selection, redox reactions and charges on cell wall. Key Words:Nanoparticles; Mcronutrients; Foliar fertilization; Mineral fertilizers; Tomato properties.