الفهرس 
REVIEW OF LITERATUREOnly 14 pages are availabe for public view
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Abstract
In order to study the effect of three phosphorus fertilization rates (0, 15 and 30 kg P2O5/fed) and four microelements spraying treatments [Tap water (control), Zn, Mn and mixed of Zn and Mn] on plant characteristics and yield traits as well as some seed chemical properties of three faba bean varieties (Giza 716, Nubaria 3 and Sakha 4), an experiment was conducted in two successive growing seasons of 2018/2019 and 2019/2020 in the Farm of Agricultural Research and the Experimental Center of Faculty of Agriculture at Moshtohor (Toukh Directorate, Kalyubia Governorate) Benha Univ. Egypt. The obtained Results could be outlined as following: Increasing phosphorus fertilizer rate from 0 to 30 kg P2O5/fed induced significantly increased on most vegetative growth, yield attributes, yield and seed chemical properties of faba bean under study except, No. of days to 90 % physiological maturity, height to 1st pod and phosphorus use efficiency were significantly decreased with rising phosphorus fertilization rates during the both seasons. The foliar spray by Zn and Mn as a single or in combination had significant effect on most faba bean traits under study compared with no microelements added during the both seasons. Faba bean plant treated with microelements foliar spray using Zn + Mn treatment was the most effective treatment for most faba bean characteristics in the both seasons. Mean performances of the investigated faba bean varieties for most faba bean traits under study were significant different during the both seasons. Faba bean cultivar Sakha 4 had higher values of chlorophyll content index at 85 DAS, plant height, height to 1st pod, No. of branches/plant, plant weight, pod length, No. of pods/plant, weight of pods/plant, No. of seeds/pod, weight of seeds/pod, No. of seeds/plant, seed yield/plant, biological yield/fed, seed yield/fed, straw yield/fed, phosphors use efficiency, seed N content, seed crude protein content, seed nitrogen uptake/fed and seed protein yield/fed in the both seasons. While, Nubaria 3 variety significantly gave the maximum mean values in No. of days to 90 % physiological maturity, harvest index and 100-seed weight in the both seasons, respectively. The first order interactions between treatments 30 kg P2O5/fed × Zn + Mn, 30 kg P2O5/fed × Sakha 4 and Zn + Mn × Sakha 4 as well as the second order interaction between treatments 30 kg P2O5/fed × Zn + Mn × Sakha 4 were significantly recorded the maximum mean values of seed yield/plant, biological yield/fed, seed yield/fed and straw yield/fed in the both seasons. Therefore, this study recommends that Sakha 4 cultivar treated by 30 P2O5/fed and mixed spraying with Zn 0.3 % + Mn 0.3 % in order to improve the production of faba bean under the condition of Toukh Directorate, Kalyubia Governorate, Egypt.