A field experiment was conducted at Faculty of Agriculture Farm, Assiut University, New Valley branch during 2015 and 2016 summer season to study the response of five peanut genotypes to phosphorus fertilization levels. This experiment was laid out in arandomized complete block design (RCBD) in a split plot arrangement with three replications. Phosphorus levels (P) were distributed randomly on the main plot and peanut genotypes at sub plot. The obtained result show that peanut plants fertilized with 45 kg fed. -1 P 2 O 5 significantly gained the highest mean values of most studied traits in the two growing seasons. Furthermore, peanut genotypes had a significant effect on most studied traits in both seasons. Thus, L35 peanut genotype surpassed the others tested genotypes in most studied traits in both seasons. Moreover, the highest mean values of seed yield and oil yields were obtained from45 kg fed. -1 P 2 O 5 and L35 peanut genotype surpassed all other genotypes in seed and oil yields in both seasons.

G OOD fertilizer management is critical for high yielding, quality and profitability of sugar beet. This work was carried out at Mallawi Agric. Res., Station, El-Minia Governorate, Egypt, during 2012/2013 and 2013/2014 seasons to study effect of three application dates of yeast, i.e., 80, 110 and 140 days of sowing and three levels of potassium fertilizer, i.e., 0, 24, 48 kg K 2 O/fad on vegetative, physiochemical, yield traits and profitability of sugar beet. A split plot design with four replications was used in both seasons and Monetbianco cultivar was sown. The obtained results indicated that addition time of yeast or/and level of potassium fertilizer (kg K 2 O/fad) exhibited a significant effect on vegetative characters of beet roots. Physical properties of beet roots, such as SR (Sugar recovery) %, QZ (Quality index) % and SL (Sugar loss) %, chemical constituents (pol (polarization) %, K, Na and aN determined as milliequivalent/100 g beet), except the 2 nd season for Na content of beet roots not reached significant level, and productivity traits of sugar beet, i.e., roots yield and recoverable sugar yield (ton/fad) in both growing seasons and combined. The interaction between addition time of yeast with K-fertilization level was significant on vegetative traits of sugar beet, physical properties of beet roots, chemical constituents and productivity traits of sugar beet.Yeast addition at age 80 days was markedly increased the total return per fad by 27.64 and 26.85% and net profit by 60.80 and 58.64% as well as sugar yield in ton/1000m 3 by 7.14 and 0.84 % compared with applying yeast at ages 110 and 140 days, respectively. In general, it can be concluded from the results that applying yeast at age 80 days from sowing with 24 kg K 2 O/fad could be recommended because it achieved the maximum values of SR% (16.27%), QZ (86.99%) and pol % (18.71), while it contained the lowest values of SL% (2.44 %) ɑ-N (1.24 milliequivalent/100 g) and Na (1.31 milliequivalent/100 g) contents. While, the highest values (4.73 and 4.78 ton/fad) for recoverable sugar yield of sugar beet was recorded with adding yeast at ages 80 and 140 days from sowing with 24 kg K 2 O/fad, respectively.

Two field experiments were conducted at the Agricultural Exp. Farm of El-Azhar Univ. at Assiut, during 2008 and 2009 seasons to study the response of two cultivars of sunflower (Sakha-53 & Giza-102), to the application of different nitrogen rates (15, 30 and 45 kg /fed) and Filter Mud Cake (FMC) (0.0, 0.5, 1.0 and 1.5 ton/fed.). The experiments were performed in a split-split plot design with three replicates where, sunflower cultivars were assigned to the main plot, while nitrogen and filter mud cake rates were distributed randomly in the sub and sub-sub plot, respectively. The combined analysis was conducted across the two seasons. The obtained results indicated that sunflower cultivars exhibited significant differences in all studied traits except harvest index. Plants of Sakha-53 were superior significantly than Giza-102 in all studied traits i.e., head weight and diameter, shelling %, no. of seeds/head, seed index, seed yield/plant, oil and protein percentage as well as seed and oil yields/fed. Increasing the level of nitrogen applications up to 45 kg N/fed. caused highly significant increases in all traits under study except no. of seeds/head and shelling % which did not reach the level of significance. On the contrary, harvest index and seed oil percentage decreased significantly by increasing N levels up to 45 kg N/fed. The application of FMC to sunflower plants exerted a significant influence on all traits under study except no. of seeds/head and harvest index which did not reach the level of significance. In general, head characters, seed yield/plant, seed index and protein % as well as seed and oil yields/fed. increased by increasing the rate of FMC applications while oil % decreased with increasing the rate of FMC applications. In general, the highest yield/fed (seed & oil) was recorded by Sakha-53 (2336.43 and 1014.59 kg/fed.) when these plants received 45 kg N/fed. and 1.0 ton FMC/fed.

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Two field experiments were conducted in El-Monera village, the New Valley governorate, Egypt, during the two successive winter seasons of 2017-2018 and 2018-2019, to study the effect of three sowing dates i.e., (1 st November (D1), 15 th November (D2) and 1 st December (D3)) and foliar spray with antioxidants (Ascorbic acid, citric acid and ascorbic + citric acids at 200 ppm and tap water as control) on two bread wheat cultivars (Sids12 and Misr1) under New Valley governorate conditions. The experimental design was a randomized complete block design (RCBD) in spilt-split plots with three replications. The obtained results pointed to sowing date, antioxidants treatments and wheat cultivars had highly significant effect (prob ˂0.01) on all studied traits in both seasons. The highest values of total chlorophyll content, flag leaf area, plant height, number of grain /spike, 1000-grain weight and number of spikes /m 2 as well as grain and straw yields ton /feddan (feddan = 4200 m² = 0.420 hectares = 1.037 acres) were recorded when wheat was sown at 15 th November. On the other hand, the highest percent of protein in grain were recorded at1 st December. Ascorbic + citric acids at 200 ppm foliar spray treatment gave the highest values of all studied traits. Also, Misr-1 cultivar was superior to Sids-12 in all traits under study. The first and second order interactions exerted significant effects on all most traits under study. In general, the highest grain and straw yields were obtained from Misr-1 cultivar when was sown at15 th November and was sprayed with mix of ascorbic/citric acids at 200 ppm.

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seasons to study the effect of chicken manure fertilizer rates (0, 3 and 6 ton.fed-1) on yield and its components of some barley cultivars. The experimental design was randomized complete block design (RCBD) in split plot arrangement. The results indicated that Giza 123 and Giza 134 were superior the rest cultivars in almost studied traits. Increasing rates of chicken fertilizer from 0 to 3 or 6 ton.fed-1 resulted in an increase in all studied traits under this study except harvest index which was decreased. The interaction affects significantly biological yield and spike length in both seasons, while for grain yield was in the first season, and straw yield in the second season. The application of chicken manure by the rate of 3 or 6 ton.fed-1 reducing the mean values of soil pH and calcium carbonate (CaCO 3) content after the first and second seasons. On the other hand, the electric conductivity (EC) and organic matter (OM) levels were significant increased with increasing the level of chicken manure. The high level of chicken manure (6 ton.fed-1) gave the highest mean values of N, P, and K after the first season than the second season.

The research aims to study the current situation of red meat production in Egypt and especially in Assiut governorate, in addition to assessing the productive and economic efficiency on beef fattening projects and identifying problems facing beef fattening projects in the research sample in Assiut Governorate, Egypt. The research found that the numbers of cattle heads in Egypt have fluctuated between increase and decrease as they reached their maximum level in 2008 with a total number of about 5023.16 thousand while it reached a minimum in 2000 with a total number of about 3526.71 thousand heads, and has taken a general trend Increasing and statistically significant, as the annual increase amount reached about 57,24 thousand heads, as it was found that the number of animals producing red meat in Asyut Governorate has taken an increasing and statistically general trend, as the annual increase amount reached about 5,24 thousand heads. It was also found that the average animal weight when selling varied from one category to another, as it reached in the first, second and third productive category about 355, 382 and 393 kg, respectively, and it was also shown that the net acre yield for the third productive category reached about 4299 pounds per head, as it was also shown that it exceeded The return of the invested pound, as it reached about 0.26 pounds per head. With an estimate of the production function of the total research sample, it was found that about 91% of the production changes are explained by the elements of the total concentrated feed, the weight of the animal when buying, and the total dry feed. Productivity, i.e. an increase in output by a percentage greater than the increase in total resources in a function. There were also significant differences between the net return of the three productive groups, and that the most important problems facing cattle fattening projects are the problem of low net yield followed by the problem of high feed prices, while the problem of high cost of veterinary care came in the last place. Our rrecommendations are: o Increasing investments directed to the animal production sector. o Work to provide production requirements at reasonable prices, and support producers to continue the production process. o Work to provide foreign strains with good genetic traits that are appropriate to the climate conditions in Egypt. oBenefiting from reclaimed lands in providing the necessary feed for animal production farms. oActivating the role of veterinary care and farmers' sense of continuous periodic follow-up.