الفهرس 
Vegettattiive growtthOnly 14 pages are availabe for public view
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Abstract
Two experiments were carried out, the first one was carried out at the Experimental Farm of Medicinal and Aromatic plants,Gemmiza(A.R.C.)Gharbieah Governorate during the two successive seasons( 2013 until 2014
to study the effect of irradiation of helium- neon(He- Ne)laser light λ=nm and some fertilization treatments on growth parameters,chemical composition and oil productivety of Majorana hortensis.While, the second one was conducted in the private farm near of El-Mahalla during the two successive seasons2013/2014&2014/2015& to evaluate the effectiveness of silicon and graphite nanoparticles strategy and some fertilization treatments on the vegetative growth,chemical composition and oil productivety of Cuminum cyminum plants First experiment Effect of different fertilization levels, laser treatments and their interaction on vegetative growth, chemical composition and oil yield of Majorana hortensis.The highest values of plant height were recorded from using 100% NPK with min exposure time,75%NPK+2g/plant humic acid with 2,5 10 and min exposure time,50% NPK + 4g/plant humic acid and %100
NPK with 2 or 5 min exposure time,75%NPK with or min exposure time in the both seasons, respectively. On the opposite, the least values were resulted from the treatment of %100 NPK and %50 without radiation. The highest values of branches number/ plant were recorded from using %100 NPK with 2 or5 min,%75 NPK + 2g/plant humic acid with
5or10 min, %50 NPK +4 g/plant humic acid with min and % NPK