Sugar is an industrial agricultural commodity of strategic importance at the global level. At the local level, the sugar industry from the cultivation of sugar cane is considered an ancient industry that was supplemented by the manufacture of beets and the extraction of sugar from it. The research problem was represented in the existence of a sugar food gap estimated at 875.8 thousand tons of sugar as an annual average for the period (2000-2018). To fill this gap, the state imports sugar from abroad to meet the deficit. It is aimed study the current situation of the sugar industry in Egypt by analyzing the food gap for it and raise the rate of self-sufficiency in sugar. Then, the study was concerned with estimating the variables affecting each of the area and quantity of supplied cane, as well as the supply price, and the efficiency of sugar extraction on the function of the operating efficiency of cane sugar manufacturing factories in the main governorates (Minya, Sohag, Qena, Luxor, and Aswan), during the average period (2016- 2018). Similarly, these variables affecting the aforementioned cane yield can be estimated on the function of the amount of sugar produced/ operating day of the cane sugar factories in the governorates of Egypt during the same period, using the Panel Data analysis. The most important results of the study revealed the following:1-The results show that the variable 𝑙𝑛 𝑥10𝑡 that expresses the average price of supplying a ton of cane during the study period is significant and has a negative sign, as shown in the model estimating the equation of the operational efficiency ratio, as an increase in the average price of supplying a ton of cane by 10% will lead to The operational efficiency decreased at a rate of about 3.11%. 2- It is also evident from the results of the model estimating the equation of the amount of sugar produced for one working day that the variable 𝑙𝑛 𝑥6𝑡 that expresses the degree of sweetness of sugar produced from sugar manufacturing factories during the same period, it is significant and its sign is positive, as an increase in the degree of sugar sweetness by 1% will lead to an increase in quantities Sugar produced from manufacturing per day at a rate of about 19.6%.  3- It is clear from the measures of economic efficiency for the production of cane sugar, the relative superiority of farmers of the Arab Republic of Egypt during the period (2013-2018), which is attributed to the response of the farmers’ lands to the production elements used in them, due to the high degree of fertility of their lands, and the increase in the accumulated experiences of the farmers.

The present study was undertaken to test the effect of heat stress (39 °C) for 4 hours on Hsp70 mRNA profiling in two chicken genotypes. Expression levels of hsp70 were used to assess the heat tolerance of two Egyptian local genotypes (Fayoumi and Matrouh). The expression level of the hsp70 gene is high in the Fayoumi type as opposed to the Matrouh type. In blood, after four hours of exposure, the hsp70 mRNA expression analysis revealed higher expression levels. These results showed that the acquired thermotolerance is positively linked to the stress memory. Within the two genotypes, Fayoumi type exhibited the highest means for hsp70 production, and therefore the heat stress is better tolerated, which indicates that Fayoumi mortality rate might be lower genetically under heat stress

The study aimed to determine the level of knowledge of the surveyed farmers on the neg-ative effects of the use of chemical pesticides, and their sources of information in this field, and determine the significance of the relation-ship between the level of knowledge of the farmers with the negative effects of the use of pesticides and some independent studied vari-ables, and finally identify the problems that limit the safe use of chemical pesticides ,the data of this study were collected during July and August 2020 by means of a personal inter-view questionnaire for a regular random sam-ple of farmers in the villages of Qalyubia Gov-ernorate. It was determined using the Kreijce and Morgan equation, and its strength reached 377 farmers, The selected data were analyzed and presented using quantitative method, the arithmetic mean, Chi-square test, The most important results were the following :the level of the respondents' knowledge of the negative ef-fects of using chemical pesticides was high, with the percentage of their average knowledge scores reaching 82.9, It was found that the most important sources of information: pesticide merchants, personal experience, rel-atives, It was found that there is a significant relationship at the level of 0.01 between the level of the respondents' knowledge of the neg-ative effects of chemical pesticides and each of the following independent variables the re-spondent’s age, gender, educational status, profession, number of years of experience in farm work, social participation, Frequency of agricultural service centers, and the number of years of experience in using pesticides. It was also found that the most important problems in the research area are: the shortage of extension agents, the scarcity of extension activities, re-spectively, Based on the results of the study, six proposals were formulated in the form of recommendations to be submitted to decision-makers.

The research targeted the competitive-ness of strawberry crop exports, the geo-graphical distribution of strawberry exports to determine the most important imported markets, and the competitiveness of Egyptian strawberry exports in the most important foreign markets. About 85.7% of the average amount of Egyptian straw-berry exports during the period (2014-2019) the most important of these coun-tries are Saudi Arabia, Kuwait, Belgium, Germany and Iraq, where their market is absorbed 19.64, 7, 6.8, 6.2, 4.5, 1,000 tons, and about 27%, 9.6%, 9.4%, 9.1%, 6.3%, from the average total amount of Egyptian exports of strawberries during the study period is about 41.08 thousand tons. This means that Egypt's strawberry exports Have not enjoy a competitive advantage in the global markets, where the value of the competitive advantage index was about 6.82 million during the first period (2001-2009),and 6.83 during the second period (2010-2019).The market share index showed that the market of Saudi Arabia, the United Arab Emirates and Belgium Ranking the top of the list of Egyptian strawberry importers, with a market share of about 58.6%, 39.2% and 9.9% of the average total strawberry imports in those countries. The study found that Egyptian strawberries a competitive price advantage in both the Saudi market, the Belgian market and the German market compared to the most important countries competing for Egyptian strawberry exports within these Markets, the competitive advantage index of Egyptian strawberries achieved high rates in these markets compared to competing countries, explained the insta-bility factor of competition compared to the instability factor of the amount of strawberries exported to Egypt is that the average Netherlands, Spain, Italy and America are more stable, with the average instability rate in the Netherlands, Spain, Italy and America. 15.8%, 44.7%, 5.4%, 12%, show standard efficient imaging that its value was greater than zero in all years during the study period (2001-2009), the average value of about 10.2%.

The agricultural sector is the main pillar of the Egyptian economic structure, as it represents main source of food and clothing. In addition, it contributes to of the national income and Egypt faces a deficit in agricultural production, on the other hand consumption exceeds local production, and food is considered a vital necessity for people that cannot be dispensed. This research includes the statistical assessment of the macroeconomic econometric model of the variables of demand and supply of maize during the period (2005-2019), and the problem has become one of the most important problems threatening development in Egypt It has dangerous dimensions for the agricultural sector in particular and for the Egyptian economy in general, and that Egypt is still suffering from a food gap in most food commodities in a way that threatens Egyptian food security, as the equation of imports of corn shows that the volume of imports decreases by about 0.31%, 0.70% each An increase in the import price in dollars per ton, the average per capita production of the current year by 1%, meaning that the most influential variable in the volume of imports of corn in a particular year was the import price in dollars per ton, the average per capita production. It was also found that about 65% of the changes in imports of corn are due to the change in the independent variables under study, and that the average imports, production, and consumption of maize during the same period is 10.39, 6.67, 17.60 million tons, respectively, 15 % increase in the import price causes decreased in the quantity imported by 0.31%, The average of imports, production, and consumption of maize during the same period was 10.66, 7.70 and 17.80 million tons, respectively.

Kitchener drain isconsideredone of the largest drains in the Nile delta. The current study aimed to assess water quality and level of some chemical and biological pollutants in both the water and sediments of Kitchener drain. The studied water quality parameters included nitrate (NO3-), phosphate (PO43-), total solids (TS), total suspended solids (TSS) and total dissolved solids (TDS), in addition, water and sediment samples were exposed to bacteriological analysis which included, total coliform (TC) bacteria, faecal coliform (FC) bacteria and Salmonella&Shigella (SS). The results showed that nitrate (NO3-) and phosphate (PO43-) concentrations in most sampling sides were within the permitted Food and Agriculture Organization (FAO) limits for irrigation water. In addition, all the values of total suspended solids (TSS) and total dissolved solids concentrations (TDS) in El-Gharbia governorate were higher than the World Health Organization (WHO) permitted limits. Bacteriological results revealed that most sampling sites were contaminated with both TC and FC bacteria where, the counts of them in the water samples exceeded the 1,000 CFU/100 ml which is higher than the WHO limits. In addition, the counts of studied organisms in all examined sediment samples were higher compared to water samples. Based on these results the water in Kitchener drain is considered unsuitablefor domestic and agricultural purposes.

Fruit peels annually accumulate in huge amounts, fruit wastes are rich in lignocellulo-sic component which can be recovered into mono simple carbohydrates able to utilize for bioethanol production. The enzymatic hydrol-ysis of lignocelluloses is known to be a key to the second-generation biofuel, the challenge is the still expensive enzymes involved in the saccharification process, loss of the most hem-icellulose pentose sugars which were non-fer-mentable as base, beside the presence of ham-pers lignin thus require to resolve its problem.As part of study, followed the cost-effective means for bioethanol producing from four fruit peels (Banana, Orange, Mango and Water-melon), yielding of enzymes from co-fungal cultivation carried by Aspergillus niger and Phanerochaete chrysosporium, followed by co-fermentation of the saccharified sugars us-ing yeast belong to Saccharomyces cerevisiae and Kluyveromyces marxianus which contrib-uted for bioethanol production in 8 L lab-scale reactor. The fermented sugars recovering was reached to 27.77 g.l-1 from banana peels which were found to be good exploited as potential raw source, co-fungal enzymatic hydrolysis followed by yeast co-fermentation led to sub-stantial yield by 10.74 g.l-1, the adding of calcium oxide increased the purity which leads finally to 97.5 wt % of pure bioethanol. Thrust towards fossil fuels replacement with renewa-ble clean fuels such as bioethanol by using fruit peels residuals which are considered renewa-ble energy source may also help in CO2 miti-gation.

يAgricultural production is characterized by seasonality that leads to an imbalance in agri-cultural labor market. However, this is pre-sumably due to the imbalance between the sea-sonal agricultural labor demand and supply, thus, resulting seasonal unemployment. This paper aims to investigate and analyze the struc-ture of Egyptian agricultural labor market throughout the period 2000-2020 via employ-ing econometric tools. The results show that, the agricultural disguised employment does not consider permeant agricultural labor its source, but rather it is due to seasonal agricul-tural employment, due to its negative marginal productivity, in which is the main cause for disguised unemployment appearance.

This paper is evaluating the addition of nanocobalt on dry matter, organic matter, cel-lulose and hemicellulose degradability of In-vitro gases technique. Nanocobalt as an addi-tive were used as 0, 25, 50, 75, 100 and 125% from the animal requirements on DM basis. The regular ration (1:1 concentrate: clover hay) was incubated for 24 hours. Then 24 and 48 hours of dry matter, organic matter, cellu-lose and hemicellulose were used to research the impact of adding 25 and 50% nanocobalt to some roughages (rice, bean, wheat, bagasse and peanut) straws using In-vitro disappear-ance. Results of In-vitro gas indicated that the DMD degradability values were increased (P<0.05) in 50 and 75 %, while the highest of OMD was in 25 and 50 % of nanocobalt. The nanocobalt had no effect on pH, but had a greater influence on the values of ammonia and TVF’s, as well as the degradability of cell wall components with microbial proteins. In control ration, the gas production was high, adding cobalt (100 %) and nanocobalt (25 and 50 %) than other of addition. High values of microbial protein (MP) and microbial protein efficiency (EMP) recorded for all different nanocobalt added. Nanocobalt 25% output gas of DM, NDF, ADF, cellulose and hemicellu-lose showed increase (P<0.05) compared to any additional levels. It concluded that the ad-dition of nanocobalt increased the production of gas, ammonia, TVF’s, metabolizable energy and degradability of cell wall constituents. It showed that the addition of nanocobalt had a stronger effect on disappearance of all roughages as DM, OM, NDF, ADF, cellulose and hemicellulose. Furthermore, the addition of 25% nanocobalt had a significant effect (P<0.05) on improving In-vitro DM and OM disappearance of all roughages except bagasse had a significant effect in add 50 % nanoco-balt.

This study was to evaluate the activity of peroxidase, polyphenoloxidase, pectin methyl esterase and protease as well as the proximate chemical composition and quality parameters of cactus pear and papaya which were dried by different methods and stored for 6 months. Our findings revealed that the highest moisture content was recorded in osmo – freeze drying of papaya and cactus pear. On the other hand, the browning index of oven dried papaya and cactus pear was higher than those dried with osmotic dehydration and osmo – freeze drying. The less activity of peroxidase was recorded in osmo – freeze drying of papaya and cactus pear. Also, the highest reduction of polyphe-noloxidase activity was noticed in osmo–freeze drying methods. While oven dried pa-paya recorded the highest activity of pectin methyl esterase pectin (0.34 %), complete in-activation was shown in other dried methods after 6 months of storage at 4 ±1℃. Different dried methods of papaya caused to reduce the activity of protease, moreover, complete inac-tivation was observed after 3 months from storage. The quality parameters for sensory evaluation of dried cactus pear and papaya demonstrated that osmo–freeze drying was more favorable to preserve samples followed by osmotic dehydration and oven drying.