The aim of this study was to see the effect of four mechanical practices (shallow ploughing, laser deep ploughing and laser leveled soil + deep ploughing), three irrigation intervals (every 4 weeks, every 6 weeks and every 8 weeks) and three plant densities (35 cm (20000), 25 cm (28000) and 15 cm (46000) plants/fed.) on growth of sugar beet plants of Farida cultivar. Sowing of sugar beet at a laser leveled soil + deep ploughing, among lower plant densities 20.000 plants/fed (1 feddan = 0.42 ha) and irrigation intervals every 8 weeks gave a significant increase in root length, root perimeter , crop growth rate(CGR) and relative growth rate(RGR) in comparison to other treatments.

Two experiments were carried-out in Research Farm of Nubaria Agricultural Research Station (46 Km. south west of Alexandria), Agricultural Research Center, Ministry of Agricultural. In 2014 and 2016 seasons to study the potential of some maize genotype to waterstress through yield, yield components, some agrono-mic and physiological characteristics. Four maize hybrids (

Two field Experiments were conducted at km 48 Nubaria region, Alex. Cairo Desert Road, El-Behiera Government, Egypt, during 2016/2017 and 2017/ 2018 seasons, to study the effect of three humic acid levels and four boron fertilization rates on yield and quality of sugar beet (Beta vulgaris L.) cultivar monogerm (cv. Francisco). Treatments were arranged in a split-plot design in three replicates. The three humic acid levels (0= water, 3 and 6 kg/fed) at the form of (humat potasium 80% K2O) randomly assigned to the main plot. While, the four boron rates (0, 400, 800, and 1200 g/fed) were distributed at random within the sub plot at the form of Nutribor (8% Boric acid). Seeds were hand sown on 3 rd and 5 th October 2016/2017 and 2017/2018 seasons, respectively, in each (subplot), at the rate of 1 seed ball per hill on one side of the ridge at 20 cm apart. Root yield (ton/fed), top yield(ton/fed), biological yield(ton/fed), sugar yield (ton/fed), TSS%, sucrose%, purity %, extraction %, potassium %, α-amino nitrogen %, sodium %, and white sugar %, were determined in both seasons. The obtained results revealed that; 1). increasing humic acid rates from zero up to 6 kg /fed increased significantly root, biological, sugar yields ton/fed, TSS%, potassium percentage and white sugar percentage during 2016/2017 and 2017/2018 seasons. Where, the highest mean values were obtained by adding the higher level of humic acid (6 kg /fed). On the contrary, the lowest values were given by growing sugar beet plant under control treatment (zero kg/fed humic acid). On the other hand, increasing humic acid rates from zero up to 6 kg /fed decreased significantly extraction %, α-amino nitrogen %, sodium %, however, the lowest ones recorded with adding 6 kg/fed humic acid. Nevertheless, under this study, the highest mean values of these traits were obtained with control (zero kg/ fed humic acid) in both seasons, 2). increasing boron fertilization rates from zero to 400 g/fed, 800 g/fed and 1200 g/fed increased significantly the mean values of root yield, sugar yield, the total soluble solids (%), sucrose (%), purity (%), extraction (%) and white sugar (%). In addition, the highest mean values were recorded with application of 1200 g / fed, while the lowest mean values were obtained by growing sugar beet plant under the control treatment (zero boron= water) during the two seasons. On the contrast, increasing boron fertilization from zero up to 1200 g/fed decreased significantly potassium%, α-amino nitrogen (%), and sodium (%) in sugar beet root, meanwhile the lowest mean values were recorded when applying the rate of 1200 g/fed of boron fertilization. Whereas, the highest mean values were given under control treatment (zero g/fed) in the two seasons, 3). and the interaction between humic acid and boron fertilization affected significantly top yield ton/fed, biological yield ton/fed, the total soluble solids %, sucrose %, purity %, α-amino nitrogen% and sodium % during both seasons and sugar yield ton/fed during the first season 2016/2017. This...

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seasons to study the effect of phosphorus and potassium fertilizer rates and different biofertilization treatments on growth, yield, yield components and chemical grain contents of six rows barley (Hordeum vulgare, L.) variety Giza 123.The experimental design used was a splitsplit plot with three replicates, where the three phosphorus application rates (0, 37.2 and 74.4 kg P 2 O 5 /ha) were randomly distributed on main plot, three potassium fertilizer levels (0, 57.6 and 115.2 kg K 2 O/ha) were located in sub-plots, whereas the three biofertilization treatments i.e. uninoculation, inoculation with phosphorein and inoculation with potassmage were occupied the sub-sub plots. Application of 74.4 kg P 2 O 5 /ha significantly gave the highest value of yield and its attributes i.e. plant height (cm), number of tillers/m 2 , spike length (cm), number of spikes/m 2 , number of grains /spike, spike weight/m 2 , 1000-grain weight (g), grains yield (t/ha), biological yield (t/ha) and harvest index (%) and N, P, K and protein percentages in grains. Increasing potassium application of 115.2 kg K 2 O/ha increased the yield and its components, as well as, all chemical composition in grains. Inoculation potassmage gave the highest yield and its components, also N, P, K and protein in grains. Also, the obtained results indicated that the favorable effect of the highest levels of the studied factors, i.e., 74.4 kg P 2 O 5 /ha, 115.2 kg K 2 O/ha and inoculation with potassmage on barley plant growth, yield and its attributes and grain chemical contents in grains.

Two field experiments were carried out at Etay El-Baroud Agricultural Research Station, El-Beheira Governorate during 2013/ 2014 and 2014/2015 seasons to study the effect of three nitrogen sources (Urea, Ammonium sulphate and Ammonium nitrate) and four different levels of nitrogen fertilization (0, 50, 75 and 100 kg N/fed) on some physiological characters, yield and yield components of wheat. Results indicated that days to heading was significantly affected by N sources in the second season only. While, days to maturity and plant height were insignificantly affected by N sources in the two seasons. Whereas, days to heading, days to maturity and plant height were significantly increased by increasing nitrogen levels from 0 up to 100 kg N/fed in the two seasons. Number of spikes/m 2 , number of grains/spike, grain weight /spike and 1000-grain weight were gradually and significantly influenced by nitrogen sources in the first and second seasons. The highest number of spikes/m 2 and number of grain/spike were obtained when nitrogen fertilizer added as urea while lowest values obtained when nitrogen fertilizer added as Ammonium sulphate during the two seasons. Whereas, 1000grain weight recorded the highest value at Ammonium nitrate and the lowest at Urea, On the other hand, spike length and number of spikes/m 2 , grain weight/spike and 1000-grains weight. The highest numbers were taken at 100 kg N/fed of Urea during the first and the second seasons. Each of straw and biological yield was insignificantly affected by the interaction between nitrogen sources and nitrogen levels in the two studied seasons.

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The present investigation included field experiments executed at the experimental farm (Abees region) of the Faculty of Agriculture (Saba-Basha), Alexandria University, Egypt, during both 2012 and 2013 growing seasons. Experiments were carried out to study the effect of irrigation with agricultural drainage water and/or canal water on yield and quality of four rice varieties (Oryza sativa L.). Five irrigation treatments were practiced as follow; (T1) Irrigation throughout the season using agricultural drainage water, (T2) Irrigation with agricultural drainage water then using canal water in sequence, (T3) Using agricultural drainage water for irrigation till end of the vegetative growth stage and the canal water starting from reproductive stage,(T4) Using canal water at the vegetative growth stage and agricultural drainage water right before panicle initiation, (T5) Irrigation throughout the season with canal water. Four Egyptian rice cultivars namely; Hybrid 1(SK 2034), Sakha 104, Giza 177, Giza 178 were used. Some growth characters, grain yield and its component characters, some yield related characters, and some grain quality characters were subjected to determine the effect of these two variables. The main results showed that, increasing of the dose of canal irrigation water starting from T1 (irrigation throughout the season using agricultural drainage water) and ending by T5 (irrigation throughout the season by canal water) significantly increased the mean values of most of studied characters and maximized by using T5 in 2012 and 2013 seasons. Meantime, the differences between the effect of T5 and T3 (using agricultural drainage water for irrigation at the vegetative growth period and the canal water right before reproductive stage) were not significant in case of most studied characters .The highest grain yields was obtained for Hybrid 1 (٥.٠٠ t/fed. ) .rice cultivars while; Giza 177 rice cultivar produced the lowest grain yield (3.18 t/fed.) during both seasons But also, all milling characters and quality characters Giza 178 rice cultivars obtained the heist values than the other cultivars. These findings assure the great amount of genetic variations between the tested cultivars. Interaction between irrigation treatments and rice cultivars had significant effect on most tested characters except harvest index in both seasons and grain yield (ton/fed.) in 2013 season only.