Aim of this study is to examine the substitution and complementary relationships of Egyptian exports from fresh and frozen potatoes in the global market. The study focused on investigating current situation of Egyptian exports from fresh and frozen potatoes at world market in comparison to its situation at Egyptian market. Hereby, demand on Egyptian fresh and frozen potatoes was assessed and time trends of price developments were statistically estimated and their relationship to global prices were analyzed.   Most important results of existing study are summarized in the following points   The analysis of Egyptian and global export prices for fresh and frozen potatoes during the time period 2000- 2012 showed increasing trends of both, which is statistically significant. The results showed increasing demand on frozen at the cost of fresh potatoes. This also matches with same development at global market. The development of export prices of Egyptian potatoes (fresh and frozen) matches with the development of prices at global market. The relationship between Egyptian and global export prices has shown linear and stable between 2000 and 2012. It seems also that export prices of frozen Egyptian potatoes much more stable than those of fresh potatoes. By studying for Stability Coefficient to export prices for fresh and frozen potatoes during the time period 2000- 2012 showed that export prices of frozen Egyptian potatoes much more stable than those of fresh potatoes. Canada, France, Germany, and Netherlands are the most export countries that competing with Egypt on world market of potatoes, particularly fresh. When computing the price competitiveness of Egyptian fresh potatoes, the result shows that Egyptian potatoes are highly competing with open-mentioned European export countries. The price competitiveness of Egyptian frozen potatoes is relatively higher when comparing to other competitive markets of Belgium, Canada, France, Germany, etc. This shows great opportunity for Egypt for expanding its exports from frozen potatoes in nearly future. Using regression analysis of time series data, the study of demand for Egyptian exports of fresh potatoes indicated that Egyptian potatoes is considered as necessary good for consumers of open-mentioned countries based on estimated price and cross elasticities. It has also proven that there is a substitutional relationship between Egyptian fresh and frozen potatoes. An important result that insure the importance of re-drawing export policies of potatoes exports in Egypt.

This study was carried out during 2012 and 2013 seasons in the Horticultural Research Station at Kanater El- Khairiya, Qualiobeya Governorate to throw light on the effect of different types and rates of fertilizer treatments on the rates of infestation of the cowpea plants, Vigna unguiculata L. by different pests Tetranychus urticae, T. cucurbitacearum (eggs and motile stages), Bemisia tabaci (eggs, nymphs, pupae & adults), Thrips tabaci (nymphs & adults) and green Jassids and on the resultant crop yield. Data revealed that treatment with NPK mixture recorded the highest infestation rate by T. urticae Koch, T.cucurbitacearum (Sayed) and T. tabaci in the two seasons, while the K2O fertilizer revealed the lowest infestation rates. Moreover, the N2 fertilizer recorded the highest infestation with whitefly and Jassids. The brown scale insects, Coccus hesperidium Linnaeus were firstly recorded in Egypt on cowpea plants but throughout the first season only. The mixture treatments resulted highest yield (2428.3 &2675 Kg./fed.) followed by Micro-element treatments (1500 &1658.3 Kg./fed.) then K2O fertilizer treatment (1416.7 & 1553.3 Kg. /fed.) in 2012 and 2013, respectively; being significantly higher than control which recorded (756.0 & 845.0 Kg. / fed.) for the two seasons.   However, the results showed a significant improvement in the uptake of NPK over the control, so it increased the production.

A green house experiment was carried out in two successive seasons on date Palm plantlets (Phoenix dactylifera L. cv. Bartomouda) from 2012 to 2013, to evaluated the effectiveness of different sources of nitrogen fertilizer at four treatments as (T2) 5 g/l ammonium sulfate 20 % (1 g nitrogen), (T3) 3 g/l potassium nitrate 33% (1 g nitrogen) and (T4) 2 g/l urea (46%) with the irrigation water one time/ week.The design of the experiment was randomized complete with three replicates. The results revealed that, plant height cm, leaves numbers, root length cm and numbers, and fresh and dry weights of leaves and roots were increasing highly significantly with 3 g/l of potassium nitrate graduated by 2 g/l urea and 5 g/l ammonium sulfate respectively at both seasons. Chlorophyll a, b and carotenoids contents showed significant rising with 3 g/l potassium nitrate. Greatest significant contents of indole and proline were obtained under T3 for two seasons. Leaves nitrogen content N was increased by 2 g/l urea in the two seasons; on the other hand, root nitrogen content was increased with treatment 3 g/l potassium nitrate, sequenced by T2 and T4 treatments. Leaves and roots phosphorus P content significantly raising under 3g/l potassium nitrate and 5 g/l ammonium sulfate for two seasons. In the presence of 5 g/l ammonium sulfate and 3 g/l potassium nitrate leaves and root potassium content K were largest at two seasons respectively. This research shows that the nitrogen formula as potassium nitrate > ammonium sulfate > urea were recommended to highly increasing growth of date palm plantlets in the green house.

A laboratory experiment was carried out to study the early growth response of 22 sugar beet (Beta vulgaris, L.) varieties to four salt concentrations of seawater i.e. 2000, 4000, 8000 and 16000 ppm. Germination and seedling growth traits (germination percentage (%), germination rate, seedling length (cm), seedling fresh weight (mg) and seedling vigor) were determined at the end of the experiment after 30 days from planting. The results showed that increasing the salinity level decreased the germination %, germination rate, seedling length, seedling fresh weight and seedling vigor of all sugar beet varieties under investigation to different extents. The results also clearly revealed that the response of the investigated varieties to salt concentrations was not the same, some varieties approved to be highly salt tolerant i.e. Soultan, Kawmira and Desprez; others were very sensitivity tolerant i.e. Helsiniki and LP16. However most of the investigated varieties were moderately salt tolerant. Results revealed clearly that the interaction effect between sugar beet varieties and salt concentrations was significant. This significant effect means that the tested varieties do not behave the same under the different levels of salinity stress.

Si application alleviates influence of some abiotic stresses on crop plants. Meanwhile, scarce information is avaiable about the significance of Si for helping the plants to overcome the injuries of N deficiency and herbicides pressure. Thus, two–year 2–field experiments were carried out in wheat. Experiment I involved three Si concentrations (Si0ppm, Si250ppm and Si500ppm) and two N levels(N100% and N50%). Experiment II examined four combinations of fenoxaprop–p–ethyl and Si: fenoxaprop–p–ethyl+Si250ppm and fenoxaprop–p–ethyl+Si500ppm (each either in sequence or in tank mixture), fenoxaprop–p–ethyl alone, hand weeding and weedy check. Under N deficiency (N50%), Si500ppm increased plant height as compared to the control. No significant differences in SPAD values were detected amongst Si concentrations under each of the two tested N levels. Si can partially alleviate negative N deficiency effect on wheat yield, causing its increase to level obtained under normal N supply. Si has no effect on weed biomass when applied with fenoxaprop–p–ethyl either in sequence or in tank mixing. The most promising treatment for maximizing wheat grain yield was the application of 100 kg N ha–1 (N50%) x fenoxaprop–p–ethyl+Si250ppm in sequence", which also, in the same time, means reducing both cost of crop production and environment pollution.

Oil crops occupies an important place in theEgyptian Agricultural Savin, come to their importance in the demand derived from the demand for the production of food plant oils , which form a pattern prevailed for the Egyptian consumers, some oil crops grown for the use of its products for the purposes of bilateral or trilateral. The peanut harvest of export crops important addition to being  one of the many crops to use and is characterized by high net yield of it compared to other crops. The research Targeting answer to previous questions and to try to develop solutions to overcome the problems that hinder the increased production of the crop peanuts in Egypt, especially as it crops which enjoys high quality in the territories does not bestow the cultivation of other field crops, as research aims to identify the most influential variable in response farmers to grow the crop and the study of functions and production costs for this crop. The results indicate that the average annual area planted peanuts estimated at about 137, 70 feddan during the period (2009-2012), the average productivity Per feddan  which is estimated at 17.59 Ardeb, while the average production of about 4352,20 million Ardeb for the same period referred to, Results also indicated response function width of the crop that the most important economic factors affecting the area planted peanuts in Egypt is the net yield per feddan of maize crop summer, summer tomatoes, sesame. The estimated production functions and costs for the three classes of possessory crop in the study sample. Finally, research suggests the following: 1- The development of varieties of high productivity copes with the Egyptian conditions with the application of Modern Technology in Agricultural Methods with the help of research organizations and Agricultural extension. 2- Work to increase the Organic fertilizer and reduce the amount of chemical fertilizer where it leads to increased production and reduced costs as indicated by the results of the study sample.  3- Encourage the establishment of factories involved in manufacturing main production areas such as the provinces of Nubaria and Lower Egypt (El-Beheira – El-Sharkeya - Ismailia) to encourage farmers to increase their production and supply at affordable prices.

This work aimed to study the effect of partial replacement of monosodium glutamate (MSG) by 5΄ inosine monophosphate (5΄-IMP) on the fertility of male rats after oral administration for 90 days. Before the biological treatment, a half amount of MSG as flavor enhancer in chicken burger was replaced by 5´IMP. The sensory assessment of cocked chicken burger confirmed that this used mixture (1:1 w/w) had a synergistic effect and led to improve the flavor intensity compared to that with MSG. Treatments were applied by stomach tube (mg/kg BW); (i) MSG, [60 for adult; 30 for weaned rats]; (ii) Mixture (1:1; w/w) of MSG and 5΄-IMP [30:30 for adults; 15:15 for weaned rats] and (iii) 5΄-IMP [30 for adult; 15 for weaned rats]. Body weight gain (BWG%) and weight of some reproductive organs including testes, prostate, cauda epididymes and seminal vesicles were measured. Serum testosterone and interstitial cell-stimulating hormone (ICSH) and seminal fructose content were assayed. Spermatozoa activity and the histology of reproductive organs were also studied in adult and weaned male rat groups. Severe negative effects on most studied parameters were demonstrated in MSG-groups, where the lowest fructose content in prostate, testosterone levels and spermatozoal activities were recorded. Reduction in the weight of cauda epididymes and testes was recorded in MSG-treated weaned rats. Histologically, all studied reproductive organs were dramatically affected by MSG-treatment. Considerable enhancements in the studied parameters and normal histological profiles were obtained due to the partial replacement of MSG by 5΄-IMP. In conclusion, 5΄-IMP has a potential protective effect against MSG-hazards in reproductive organs.

Poverty is great obstacle towards achieving sustainable development and economic growth, and threatens political and social stability and security. Poverty doesn’t mean only lack of necessities to fulfill individuals’ welfare, but deprivation from opportunities and choices. Though, previous governments-prior to 25th of January revolution embarked a program aiming poor people through an integrated bunch of developmental projects to improve poor people’s quality of life. This program consists of two main parts: first the main development program targeting 1000 poorest villages (according to the economic development ministry, 2008) and second part the integrated development program which targets 151 villages. In order to enhance the governmental initiative and improve the agriculture sector in Egypt, the current study aims at identifying the conditions of these poor communities via targeting two main and important categories which are agricultural laborers and farmers either tenants or renters of the agricultural lands from gender perspectives, besides identify- ing their problems and suggestions to overcome these problems and their relationship with the relevant agricultural institutions and private sector, and finally their suggested policies to enhance and attract investments to the agriculture sector in Egypt, which will eventually lead to application of more convenient measurements and policies to improve poor people’s livelihoods. The study’s results revealed the rooted poverty especially among agricultural laborers either male or female, but mostly among females, as most of them lack skills, and not gathered in one entity, besides low wages and seasonality of the agriculture work. Therefore most of them are willing to shift to other work opportunities. As for farmers, they suffer from many problems such as high agricultural input prices, soil deterioration, irrigation problems, and deteriorated drainage networks and finally lack of agriculture extension services. In light of the previous results, if no serious measurements and actions taken by the government and relevant stakeholders to improve the agriculture system as a whole, and improve laborers capabilities, solving irrigation and drainage problems, and accessing markets, then we will lose our capabilities to face the accelerating challenges and imbalance in our food security and moreover trapped in the vicious poverty cycle.

The present study was carried out in the desert valley (wadi) Abu Salam (63 Km.) east of Berber city, RiverNileState, and in the nursery of the Faculty of Agriculture, NileValleyUniversity. The autecology and biology of major desert specie, Handal (Citrullus coloynthsis), were studied. The study area (Wadi Abu Salam) was divided into three sections; upper, middle and lower. The soil was classified as sodic soil and contained a high percentage of clay in the upper section, equal percentage of clay and sand in the middle section and high percentage of sand in the lower section. The distribution of Handal plant in the wadi area was investigated. In the first season, it was only detected in the middle section (0.60-0.72 plants/m2). In the second season, the plant was distributed in the three sections of the wadi (1.46-1.66 plants/m2 for the upper section, 0.27-0.49 plants/m2 for the middle section and 0.3-0.4 plants/m2 for the lower sections).The rate of photosynthesis increased during the first stage of growth to reach its maximum (2.2-2.34 gm/day) during the 8th week from the start of germination, then started to decline till it reached its minimum rate (0.10-0.12 gm/day) at the maturity stage in both seasons. Plant roots growth started at a low rate, then, increased with plant development and became equal after 7 weeks from germination. After that, it decreased until it reached its lowest rate at the stage of maturity.

Recent data shows a declining performance in Egyptian foreign trade of agricultural sector especially by increased the Egyptian agricultural import, which leads to increase the deficit of agricultural trade balance. Agricultural processed proucts is consider one of main source of agricultural trade balance deficit. As a result, it is necessary to study the main factors affecting the Egyptian demand of foreign agricultura processed products to determine the most important factors and determine the possible solution in future. It is clear through the research resealt of the factors affecting the quantity of the Egyptian fats and oil imports, that their main factors are determined by the total production of the Egyptian fats and oil, the imports price and the consumption of oils and fats and in the total exports of USA from oil and fats. Moreover, it is obvious from the factors affecting the demand in Egyptian market that the price of the USA fats and oil is considered the main factor in most of these markets. Moreover the effect of free trade agreement and European Egyptian agreement were significant positive for increase the Egyptian demand of foreign oils and fats. So it is important to use some possible solution for decreasing these positive impact of these fators on Egyptian demand for foreign oils and fats for developing countries without being against the activation of these agreements. It is important to control the national consumption and increase the total production of oil and fats.