The objective of this research is to estimate price (direct and cross) and expenditure elasticities for major food commodities in Egypt. The food commodities are divided into six sub-models depending on the homogeneity within each group of commodities and the data availability quantities consumed and the corresponding retail prices for each individual item. Some commodities are aggregated in groups such as other beans, other vegetables, fruits(1), fruits(2) and oils.  The Linear Almost  Ideal  Demand  System  (LAIDS)  model  is  applied  in  estimating  a  system  of demand equations for each group of food commodities. To avoid the invalid inference and spurious regression problems that may be created by non-stationary data series, the Fully Modified Least Squares (FMLS) estimator is utilized.  The demand parameters satisfy the Engel aggregation, cournot aggregation, homogeneity and symmetry conditions.  The results indicate that expenditure elasticities of the majority of food commodities/groups are less than the unity except fot the fruits2 (1.110), indicating necessity effects. This can be also interpreted as following the increasing of consumptions of these commodities is strongly connected with increasing of all income levels. The results also show that the own price elasticities for food commodities/groups are inelastic. For fruits 2, its inelastic own price elasticity still indicates that it tends to be very sensitive to price changes. The relative high cross price elasticities in all sub-models illustrate the strong substitute or complementary effects of the price change of one commodity one quantities consumed from other commodities in the same sub-models. Therefore, structural implications from the estimated elasticities are important. The estimated own and cross price and expenditure elasticities must be analyzed during the economic reform for better understanding all economic changes affecting prices as well as consumption and expenditures.

Elwady Elgedid considered as a promising Governorate in the field of sustainable agricultural development. This research aims to identify the current situation of agricultural plant production, crop composition, as well as crop yield, Agricultural Animal Production and the change in the number of cattle. The future prospects of agricultural production are also estimated. Proposals and recommendations on how to exploit the available optimum utilization of agricultural resources are also stated. The results showed that the average crop area, the value of agricultural production, the agricultural income and agricultural employment of Elwady Elgedid Governorate represents about 1.3%, 0.4%, 0.05%, 0.12% 0.12%, of the total crop area, agricultural production value, the value of production inputs, agricultural income value, the number of agricultural workers of the Republic. Results also showed that wheat crop area and ​​production represents about 1.9% 1.5% of the area and production of wheat crop in the Republic. The area and production of faba bean crop represents about 4.9% to 4.3% of the area and ​​production of faba bean crop in the Republic. The area and production of the winter tomato crop represents about 1.4% 1.8% of the area and production of the winter tomato crop in the Republic. While the area and production of alfalfa represents about 65.8%, 65.8% of the area and the production of alfalfa in the Republic as an average of the period, while the area and the production of sesame crop represents about 0.49%, 0.36% of the area and production of sesame crop in the Republic as an average of the period. The area and production of maize represent around 0.34%, 0.07% of the area and production of maize crop in the Republic as an average of the period. For Animal Production, numbers of cattle buffalo, sheep, goats, camels, representing about 2.6%, 1.3%, 0.97%, respectively of the total number in the Republic. By studying the expectation of future agricultural production in Elwady Elgedid Governorate years 2015, 2016 and 2017 showed the following: The crop area, agricultural production, agricultural production inputs, agricultural income and agricultural workers will increase with an increase estimated at 1.05%, 3.1%, 3.3%, 3.5%, 0.07% respectively out of 2014, and the area of wheat, bean and alfalfa, will increase by 2.1%, 70.8%, 0.09% Respectively from 2014, while summer sesame area will fall by 55.2% from 2014. The expectation for the future productivity of bean, and winter tomatoes will rise by 5.7%, 14.9% respectively from 2014, while the maize, summer sesame and alfalfa production will drop by 0.3%, 5.9%, and 5.2% from 2014. Forecasting the future of summer bean production will rise by 44.5% from 2014, while summer sesame, tomato and alfalfa production will fall by 70.13%, 1.4%, 5.3 respectively out of 2014.While forecasting the future number of, sheep, goats will rise by 0.55%, 0.06% respectively while the number of cows, buffalo, and camels will go down by 1.9%, 9.1%,1.3% from 2014. The research recommends dissemination crops appropriate to soil conditions and the environment in all varieties preservation area, and creates herd's nucleus for each of goats, cows and sheep, in the form of model farms.

Faba bean (Vicia faba L.) seeds cv. Misr 1  were treated with Bion (5 mM), salicylic acid (5 mM) as chemical inducers as well as Paenibacillus polymyxa and Trichoderma harzianum as biotic inducers to study their effect on the infection with Rhizoctonia solani and Fusarium solani f. sp. fabae under greenhouse and field conditions.           Under greenhouse conditions (Agricultural Research Centre, Giza) all treatments induced reduction in the percentages of pre- and post-emergence damping off caused by R. solani or F. solani f. sp. fabae compared to untreated control. The highest percentage of survived plants was achieved from the inducer Bion (92 % and 88%) compared with untreated control (40% and 36%) in the presence of R. solani or F. solani f. sp. fabae respectively. Meantime, there was no significant difference between the Bion and the fungicide Rizolex –T (3 g/Kg seeds) treatments. However, all treatments caused significant increase in the figures of plant height, shoot and root dry weight, nodules number/plant and nodules dry weight over the control treatment grown in infested soil by R. solani or by F. solani f. sp.  fabae. The highest values of all growth parameters under study were recorded on faba bean plants check (healthy plants) grown in disinfested soil followed by Bion and Rizolex –T treatments in the presence of R. solani or F. solani f. sp.  fabae. There was no significant difference between Bion and Rizolex-T treatments with exception of nodules number and nodules dry weight /plant in the presence of R. solani. On the contrary, there was significant difference between Bion and Rizolex-T treatments with exception of plant height in the presence of F. solani f. sp.  fabae.           Under field conditions at Giza (Giza Governorate) and Etay El-Baroud (El- Behira Governorate) Agricultural Research Stations during winter season 2013-2014, all the treatments significantly decreased the percentage of pre- and post-emergence damping-off and increased the percentage of survived plants compared with untreated control in two locations with exception of post-emergence percentage figures at Giza Agricultural Research Station. Regarding survived plants, there were no significant differences between the Bion (89.5% and 86.5%) as well as Rizolex-T (90.9% and 88.8%) treatments compared with untreated control (68.3% and 64.3%) at Giza and Etay El-Baroud Agricultural Research Stations respectively. However, all inducer treatments significantly improved growth parameters (i.e. plant height, number of pods/plant, seed weight /plant and one hundred seed weight) as well as yield compared to the untreated control in the two locations. Higher increase in seed yield (ton /feddan) was obtained with Rizolex-T and Bion treatments (62.2% and 57.9%) respectively, followed by salicylic acid and P. polymyxa with (39.4% and 28.4 %) respectively, increasing over the untreated control calculated as means of the two locations.         Activities of peroxidase (PO), polyphenol oxidase (PPO) enzymes and phenol content were determined in faba bean plants treated with different inducers. Bion treatment showed the highest increase in PO and PPO activity, total and free phenols followed by salicylic acid treatment in the presence of R. solani or F. solani f. sp.  fabae.

The research aimd to identify changes of food expenditure patterns among Saudis and resident foreigners in the Kingdom of Saudi Arabia, by estimating expenditure functions for both the Saudis and resident foreigners, and estimate expenditure elasticity and marginal propensity to expend for household of major food groups. The study relied on cross-sectional data from the family budget survey conducted in Kingdom. Quantitative analysis and statistical tests were utilized. Means and indexes number, simple regression in linear and double logarithmic form for estimating expenditure food functions, in addition to the test of  homogeneity of regression using chow test. The results of the study  showed that the average monthly expenditure for Saudi household on miscellaneous goods and personal services as agroup, housing, water, electricity, fuel as asecond groups, food and drinks as athird groups, respectively 21.2 % , 20.7 % , 16.9 % of total expenditure. this classification differed for resident foreigners were the top three ranked expenditure groups were the housing, water, electricity, gas and fuel as one group, food and drinks as asecond groups, the miscellaneous goods and personal services as athird groups, respectively 21.8 %, 20.1% , 14.7% of total expenditure . The results of the study also showed that the Saudis are more flexible than resident foreigners in expenditure on food and drinks in general, where the consumption expenditure elasticity on food and drinks for Saudis was equal to 0.70, which was bigger than that for foreigners 0.61, yet the situation varied between commodities. The first group included the food commodities with consumption expenditure functions that were homogenous for Saudis and foreigners. These commodities were Fish and seafood, milk and milk products, eggs, sugar, jam, honey, food products are not classified, and coffee, tea and cocoa. Expenditure elasticity has been estimated was equal 0.85, 0.77, 0.78, 0.95, and 0.89, respectively. As for the food groups that expenditure pattern differs between Saudis and foreigners, this group included the food commodities with consumption bread and cereals, meat and poultry, adible oils and fats, pulses, fruits, vegetables, mineral water , soft drinks and juices, for Saudis was 0.50, 0.65, 0.62, 0.77, 0.78, 0.90, respectively. While for foreigners amounted to 0.29, 0.35, 0.51, 0.64, 0.56, 0.70, respectively, all of which are less than one, which indicates that demand for these food groups, is inelastic demand i.e. necessary good.

This research study was carried out in the open field during the two successive seasons of 2012/2013 and 2013/2014. The aim of this investigation was to study the response of pot marigold (Calendula officinalis L.) to different application methods and concentrations of seaweed extracts applied as a commercial compound. Seven treatments were initiated, i.e. three concentrations of seaweed extracts (500, 1000, 1500) were used either as foliar spray or as soil drench in addition to the control treatment (tap water). Results indicated that foliar spray with 1500 ppm of seaweed extract increased significantly plant height, number of flowers per plant and vase life in the two tested seasons. However, foliar spray with the lowest concentration of seaweed extract (500 ppm) resulted in significant increments in flower stalk length, flower diameter and carbohydrates content. Moreover, the same concentration showed significant increases in total carotenoids, nitrogen, and phosphorus percentage when used as soil drench in the two tested seasons.

An experiment was carried out to study the effect of some agricultural and chemical treatments on two serious insects i.e. leaf miner, Tuta asoluta (Meyrick), and the cotton whitefly Bemisia tabaci (Genn.) that infest tomato plants, as well as the influence on the growth, fruit yield and its quality  were evaluated. The trail was carried out in a sandy soil at Amoun Agricultural Association, Eltal El Kabier, Ismailia Governorate, Egypt during two autumn seasons of 2013 and 2014. The experiment included 7 treatments as follows: covering tomato plants with agryl, white and green net as a row covering tunnels, dusting with Sulfur (repellent the insect) as the safety material for human and environmental comparing chemical pesticides i.e. Actara using it as foliar spraying or soil drench and untreated control. The results showed that the all treatments induced significant positive impact for all infest status which reduced the incidence of the two serious insects’ i.e. T. asoluta and B. tabaci on tomato plants than the control treatment during the first and second seasons. Data also showed that the all treatments were infested by tomato leaf miner (eggs and larvae stage) with low numbers of eggs under the tested conditions during the two seasons except of covering with Agryl, white net and green net which were free from any tomato leaf miner. In addition, soil treatment (soil drench) application was the most potent treatment in protecting tomato plants from the whitefly immature stages, but the lowest percentage of plants exhibiting virus symptoms (TYLCV) recorded  by covering with white net treatment compared with untreated (control) during the two tested seasons. Concerning the effect of using some agricultural and the chemical treatments on horticultural characters of tomato plant, the obtained results indicated positive effect on the all studied parameter of tomato i.e. vegetative growth characters, physical and chemical fruit characters, flowering characteristics and yield components during the two seasons. The data showed that the rows covering with white net was the best potent treatment safety treatment for human healthy followed by foliar spraying with Actara 25% WG (Thiamethoxam) 20g./100 of water as chemical treatment on yield, which recorded  (41.7 and 43.2), (30.32 and 32.13) tons per feddan during the first and second seasons respectively compared with other treatments. Moreover the covering with white net also recoded the first ranking in economic study which recoded the best value (34200 and 35700) Egyptian pound on total income without addition the cost of agriculture practices during the first and second seasons respectively. For that it can recommend by covering tomato plants with white net followed by covering with agryl especially at heavy infection seasons with the serious insects as T. asoluta and B. tabaci for producing high tomato yield with best quality, in addition safety human health and environment without using pesticide.