Potato occupies a distinguished position in the Egyptian agricultural economy, whether in terms of its contribution to agricultural income or in terms of cultivated area, in addition to being one of the important food crops in the Egyptian dietary pattern in addition to being one of the most important Egyptian agricultural exports. The research aims to measure the effect of price policies on the most important economic variables of the potato crop by identifying both the productive and economic indicators of the potato crop in Egypt. The extent of deviation of the price that producers get from the real price that they must obtain. The efficiency of using agricultural resources for the potato crop. The effect of the price policy of potato crop on the product's well-being and consumer and government revenues. It was found from the results of the research that the average area cultivated with the potato crop amounted to about 317.74 thousand feddans. The feddan productivity the total production amounted to about 10.82 tons, 3477.12 thousand tons, respectively, and that the average total costs. Total income, net revenue per feddan, and farm price reached about 9554 53, 13704.05, 4149.58, and 1147.68 pounds respectively, and the ratio of total revenue to total costs. The profitability of the produced ton, and the profit of the invested pound amounted to about 1.53, 0.53 and 381.87 pounds, respectively, during the period (2000-2018), as it turned out that. The value of production inputs, the added value amounted to about 8097.89, 5606.16 pounds, and the average consumption. The amount of waste, and the surplus of the potato crop in Egypt amounted to about 2,297.89, 425.32 and 1179.22 thousand tons, respectively, and the rate of self-sufficiency of the potato crop in Egypt reached About 152.99%, the average per capita consumption of the potato crop in Egypt was about 28.51 kg / year, and the average quantity and value of exports and imports of potatoes amounted to about 418.02, 106.44 thousand tons, 145.63 and 76.47 million dollars per ton respectively, and the trade balance of potatoes reached about 7469 million Dollars during the period Previous reference to it. The nominal protection coefficient and rate and the partial equilibrium model were also estimated in order to study the effect of price policies on both the producer. The consumer, foreign trade and government revenue as a result of following a certain policy based on the indicators of welfare, efficiency and government revenue. About 0.62, 0.38, respectively, during the period (2000- 2018), as it was found that the average net economic loss. The net economic impact on society and the state, producer surplus, government revenue, and the change in foreign exchange amounted to about 247.176, 426.96, 904.352, 1309.882, 829.035 thousand pounds, respectively, during the period (2000-2018).

The aim of this research is to trace recent changes in family expenditures on food commodities between 2015 and 2017/18. The data is drawn from CAPMAS publications on family income, expenditure, and consumption for both years. Three food groups are explored in this paper: 1- The aggregate group of food and beverages; 2-The grains and bread group; and 3- The meat group. Two statistical models are utilized for the purposes of data analysis. The first model is known as Working's model and the second model is the well-Known double logarithmic model. The analysis shows that the expenditure elasticity of the aggregate group of food and beverages ranges between 0.423 for high-income urban families in 2017/18 to 0.763 for urban poor families in 2015. For rural families the same elasticity is about 0.313 for high-income families in 2017/18 and about 0.751 for poor families in 2015. These estimates are derived from the OLS estimates of Working's model. The double logarithmic model gives one single estimate for expenditure elasticity for the entire set of data. For example, the expenditure elasticity for all families in 2017/18 is 0.63 in urban areas and 0.59 in rural areas according to the double logarithmic model. The same estimates are 0.64 for urban areas and 0.56 for rural areas according to Working's model. The Working's model fits the family survey data quite well and gives multiple estimates of expenditure elasticity according to the level of family income. In contrast, the double logarithmic model gives one estimate of expenditure elasticity that does not change with the level of family income. That is Working's model would be more suitable for policy analysis purposes.

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.

Two types of essential oils (thyme and Stachys) were used in this Estimation. The chemical composition, antioxidant activity (by DPPH assay) and the rancimat method were used to assess the stability effect of these essential oils. The tested oils were added to mayonnaise to evaluate its capability for inhibition of secondary oxidation products. By DPPH assay, antioxidant activity showed that thyme essential oil was the best antioxidant agent as radical scavenging agents at 450 and 500 ppm concentrations, even better than BHT at the200 ppm concentration. As a typical antioxidant, butylated hydroxytoluene was used for comparison. The mayonnaise samples prepared by adding thyme, stachys essential oils and TBHQ (control +) at concentrations of 200,400, 600 and 200 ppm into the sunflower oil free from antioxidant. At the amounts used in this study, thyme and stachys oils were significantly successful in reducing the oxidation of sunflower oil, especially, at 500 ppmwhich showed more efficient than BHT. Specifically, in the presence of thyme oil, the induction period of sunflower oil was considerably elongated. However, butylated hydroxytoluene (BHT) was more efficient than thyme and Stachys oils at the 200-ppm concentration against oxidation of oils. all concentrations of thyme and stachys essential oils had an antioxidant activity similar to synthetic antioxidant of TBHQ at a concentration of 200 ppm for inhibition of secondary oxidation products in mayonnaise in comparison with the control sample. As a conveniently available source of natural antioxidants, thyme and stachys essential oils can be used for use in fats, oils and food containing fats.

Fish play an essential role in food security and are regarded as one of Egypt's primary food resources and, therefore, significantly im-pact the national economy. The three main sources of fish production in Egypt: marine (Red and Mediterranean seas), lakes and the River Nile, due to the elevated incidence of species substitution at the global level, precise identification of seafood species on the mar-kets considered a solution for food safety con-trol institutions and human consumer protec-tion. Mislabeling occurs when one species is substituted for another. Different species of red sea marine fish were collected from the Egyp-tian market. According to the Arabic name in the fish market, Samples searched for English and Latin family names in (www.fishdata-base.org). Commercial samples were success-fully extracted and confirmed with 1.5% aga-rose gel electrophoresis. The result showed that the mtDNA gene cytochrome c oxidase subunit I (COI) amplification was successful for all samples with high concentration, it was purified and sequenced for both directions and blasted using the NCBI database. Resulting in the identification of three commercially essen-tial and expensive fish samples, Baghbaghan (parrotfish), Hamour (Greasy Grouper) and kahaya (Spiny squirrelfish). One of them cor-rectly identified according to the market name, while the other two are recorded mistakenly under another name.

Mulberry silkworm, Bombyx mori L. is in-fected with many diseases. In this work, two fungi species, Aspergillus fumigatus and As-pergillus flavus, were isolated from the in-fected B. mori larvae during rearing process. The morphological symptoms were the same for both fungi and appeared from newly hatched larvae until moth formation. In larvae, black spots of both fungi species appeared eve-rywhere on the body, then these spots extended and eventually larvae died, and fragments of the fungus came out from the spots. The only one difference between the two fungi, is that symptoms of A. fumigatus appeared four days earlier than those of A. flavus. Newly hatched larvae were sprayed with spore suspension (1x106 conidia spores/ml) of A. fumigates and A. flavus separately. One and 12 hrs. after in-oculation, larvae were sprayed with different concentrations of fungicide (Actamyl), sali-cylic acid, and henna and propolis powders, in isolation. After words, mortality and survival percentages were calculated and compared to those that occurred in untreated check (larvae were inoculated with A. fumigatus and A. fla-vus separately without any control treatment). The lowest mortality and highest survival per-centage were occurred in larvae treated with salicylic acid at 10% after 12 hrs. from inocu-lation with A. fumigatus. On the other hand, the lowest mortality and highest survival percent-ages occurred in larvae treated with the fungi-cide Actamyl at 6% and henna at 15% after 12 hrs. from inoculation with A. flavus.

The presented study aimed to evaluate the different control methods of the rusty flour beetle Tribolium castaneum (Herbst) (Coleoptera: Tenebrionidae). The experi-ments were conducted to evaluate the effi-ciency of a chemical pesticide (Mala-thion), biopesticide (Tracer 24% SC), plant oil (Lemongrass oil), plant extraction (Ac-etone extracts from Rosemary), powder (Diatomaceous earth) and modified At-mosphere (argon gas). Mortality percent-age increased with increase of exposure times at all tested concentrations. The tox-icity effect of different treatments against adults of T. castaneum at the LC50 after 7 days post-treatment at 30±1°C could be ar-ranged in descending order as follows: Malathion, Tracer 24% and lemongrass oil, while, acetone extracts from Rosemary and diatomaceous earth (DE) were the least effective. The LT50 values against the adult stage of T. castaneum were 19.99, 2.33 and 4.86 hr. for Argon 100, 80 and 60%, respectively. In order to avoid the disadvantages of using chemical insecti-cides such as malathion, it is recommended to use other more safe control methods for the environment as Tracer 24% or lemongrass oil or Argon gas.

The foot and mouth disease (FMD) vaccine is used to control the FMD in cloven-hoofed animals including calves. The most important step in vaccine preparation is the selection of a suitable adjuvant which plays a main role in the vaccine’s potency. The present study is an attempt to use clinoptilolite instead of Montanide oil to enhance the efficiency of the FMD vaccine and reduce its production cost. Twelve calves were split into four groups. Three groups were vaccinated with FMD vaccine with different adjuvants i.e. 100% Montanide (ISA 206), 50% of Montanide with 1.0 μg/dose of clinoptilolite (ISA 206+CLINP), and by replacing the 100% of Montanide to 1μg/dose of clinoptilolite (CLINP). The fourth group was unvaccinated. Results showed that calves vaccinated with (ISA 206+CLINP) FMD vaccine expressed the highest and the longest periods of immune response until 38 weeks. While groups vaccinated with (CLINP) or (ISA 206) vaccine showed only protection up to 26 and 34 weeks respectively. Also, our results showed that clinoptilolite improved organ functions resulting from the stress of vaccines. Finally, this study recommended the use of clinoptilolite with Montanide oil as a potential adjuvant in the FMD vaccine to give high stimulation of the immune response.

The objectives of the current study were to investigate the opportunity of estimating soil salinity from hyperspectral data and identifying the most informative spectral zones for estimation. Electrical conductivity (EC) measurements of ninety topsoil samples (0–30 cm) collected from Toshka, Egypt, were used as data set. Analytical spectral device was employed to collect the reflectance spectral signatures of soil samples. Both linear regression and HSD Tukey’s analyses displayed that the SWIR1 and SWIR2 zones are the most suitable for soil salinity prediction while, blue, green and NIR were the wickedest. Moreover, EC estimation was better in case of lower soil salinity (0-2 dS m-1) than higher levels (8-1). Partial-least-squares-regression (ΡLSR) was employed to establish soil salinity prediction model using the training set of soil samples (n=75). The PLSR model was set up using the most informative wave bands (SWIR1 and SWIR2). The result showed that PLSR linear model gave a precise prediction of soil salinity (R2 = 0.93). The results revealed that employing reflectance values in SWIR in the model variables increases the precision of soil EC prediction.

A study was conducted to assess two enzyme detoxifying activities and insecticide-resistance gene expression quantitation using real-time (PCR). Four populations of pink bollworms were compared with the baseline laboratory strain. Field populations showed higher levels of enzymatic activity, glutathione-S-transferase and β–esterases, than those of the laboratory strain. The amplification curves scored a cycle threshold (Ct) value of 25 for the ribosomal protein subunit7 (rps7). For the BtR gene, the Ct values of analyzed biological groups ranged from 20 for the laboratory strain to 24 for the Fayoum group. For Cad1, the Ct values ranged from 19 for laboratory strain to 23 for Fayoum and Qalubia populations. Therefore, the present work introduces a method for the challenge of monitoring resistance to Bt toxins in crops which requires, according to the IPM (Integrated Pest Management) program, a wise insecticide application.