خيارات البحث
النتائج 1 - 10 من 42
EFFECT OF ACIDIC MARINATION ON THE QUALITY CHARACTERISTICS OF SPENT HEN KOBEBA DURING FROZEN STORAGE
2017
Nesrin Mohammed | E. Mansour | A. Osheba | Amal Hassan
Marinated spent hen meats were used in the preparation of kobeba. The chemical, physicochemical, microbiological and sensory properties of kobeba were evaluated during storage at -18˚C for 5 months. Kobeba treated with lime juice had higher crude protein (14.03%), crude fat (7.78%), total ash (3.18%), carbohydrates (8.69%), cooking loss (5.62%), water holding capacity (3.41 cm2/0.3g) and plasticity (2.30 cm2/0.3g) and lower moisture (66.41%) and pH (5.96) than kobeba treated with propionic acid and acetic acid. Lime juice, acetic acid and propionic acid marination reduced total volatile nitrogen values by 25.82, 20.53 and 11.20% and thiobarbituric acid values by 33.82, 25.37 and 18.38%, respectively. Lime juice followed by acetic acid was more effective in reducing total bacterial, psychrophilic bacteria and yeast and mold counts than propionic acid. Kobeba marinated with lime juice had higher rating scores (7.68-7.98) for all sensory properties than kobeba marinated with propionic acid and acetic acid. Total volatile nitrogen, thiobarbituric acid, pH, water holding capacity and cooking loss of kobeba were increased as storage period increased. However, plasticity had an opposite trend. Water and fat retention of kobeba were not affected by storage period. At the end of storage period, kobeba had rating scores described as like slightly (6.19-6.45) for all sensory properties.
اظهر المزيد [+] اقل [-]GREEN MARKETING AS A RECENT ATTITUDE TO ACHIEVE SUSTAINABLE DEVELOPMENT
2017
Soha El-Deep | Ahmed El-Sayd
Environmental issues is an important topic nowadays as almost every country’s government and society has started to be more aware about these issues. This leads to a trend of green marketing used by the firms /producer in order to gain profit and protect the environment, Green marketing is the process of satisfying the needs and wants of customer’s in a way which can bring benefit or profit for both the producer and the society by reducing detrimental impact on the natural environment by providing less environmental harmful and/or more environment friendly products to the respondents, green marketing tools such as eco-label, eco-brand and environmental advertisement will make easier perception and awareness of green products attributes and characteristics, consequently, guiding them into purchasing environmentally-friendly products. Applying these policy tools plays an essential role to switch customer’s actual purchasing behavior to buy environmental friendly products, therefore, reduce the negative impact of synthetic products on the environment. The aim of this research was to know the respondents awareness of green marketing and its impact on sustainable development and to assess the attitude of respondents towards green marketing and sustainable development. A sample of (150) respondents was chosen from (5) super markets for administering well structured survey questionnaires. The analytical tools were used descriptive statistics, inferential statistical treatments such as percentages, means, and correlation analysis were applied to the data. From the research it was found that majority of the respondents did not have knowledge about green marketing because it is very new concept for respondents otherwise majority of the respondents agreeabout believing in the concept of green marketing, paying extra cost for green products also majority of the respondents strongly agreeabout supporting green marketing and sustainable development strategies The results of a correlation analysis between the respondents’ attitude towards green products with respondents’ demographics showed that, the respondents’ attitude towards green products was significant negatively correlated with Age, Education and income were significant positive correlated with respondents’ attitude towards green products, the research recommended that government and marketing organizations have to disseminate the importance of green marketing and enhancing the awareness at every level of stakeholders about green marketing.
اظهر المزيد [+] اقل [-]EXTENSION REQUIREMENTS OF WOMEN SOCIO- ECONOMIC EMPOWERMENT IN SIWA OASIS, MATROUH GOVERNORATE
2017
Hanan Hamed
The study aimed basically at: describing the level of respondent women empowerment in Siwa oasis, identifying the relationship between the level of respondent women empowerment and the studied variables, identifying the importance level of social and economic empowerment requirements, identifying the availability level of social and economic empowerment requirements and identifying the relationship between the importance level and the availability level of women empowerment in the study area. A systematic random sample of (310) women in Siwa oasis were selected to conduct the study. Data were collected through personal interviews with the selected respondent women using a questionnaire. The statistical analyzing tools used in the study were: Pearson’s correlation coefficient, Spearman’s correlation coefficient, in addition to frequencies, percentages, arithmetic mean, weighted arithmetic mean and standard deviation to present and describe data. The most important findings of the study were as follows - About (67.1%) of respondent women had a low level of social empowerment, while about (50.0%) of them had a low level of economic empowerment. - There was a significant positive relationship at 0.01 probability level between the respondents social empowerment level and the following variables: educational level, family size, cultural openness, monthly income, aspiration level, willingness to take risks, exposure to the resources of agricultural information, attitude towards agricultural extension, extension communication and general knowledge. - There was a significant positive relationship at 0.01 probability level between the respondents economic empowerment level and the following variables: educational level, family size, cultural openness, monthly income, aspiration level, willingness to take risks, exposure to the resources of agricultural information, attitude towards agricultural extension and extension communication.
اظهر المزيد [+] اقل [-]MINIMIZING POSTHARVEST LOSSES IN POTATO (Solanum tuberosum L.) TUBER USING GAMMA IRRADIATION, MINT OIL AND PACLOBUTRAZOL UNDER UNREFRIGERATED STORAGE CONDITION
2017
Soha. El-Sherbiny | M. Ragab | M. Abd-El-Moula | E. Ragab
This experiment was carried out on potato tubers during the two successive seasons of 2013/2014 and 2014/2015 at the Department of Natural Products Research, National Center for Radiation Research and Technology, Nasr City, Cairo, Egypt. The research aims to reduce losses resulting from the storage at room temperature and to reduce cold storage costs of potato tubers using gamma radiation, mint oil and paclobutrazole treatments. Potato tubers cv. Sponta were treated with 100 Gy of gamma radiation, 5% of mint oil and 100 ppm of paclobutrazole during the two successive seasons of 2013/2014 and 2014/2015. Results showed that, tubers irradiated with 100 Gy and soaked in 100 ppm paclobutrazole scored the lowest percentage of weight loss, sprouting, shrinkage, decay and total lost percentage. As for the effect of soaking tubers in 5% mint oil, results showed a higher percent of shrinkage than other treatments. On the other hand tubers irradiated with 100 Gy of gamma irradiation then soaked in 100 ppm of paclobutrazole had higher contents of starch than other tested treatments.
اظهر المزيد [+] اقل [-]FIELD STUDY OF THE ECONOMIC AND SOCIAL EFFECTS OF THE AGRICULTURAL LANDS IN GIZA GOVERNORATE 2017
2017
F. Zaki | Thanaa Ahmed | H. Sahrhan
It is one of the most serious problems facing Egyptian agriculture, which is working to eat agricultural area Where farmland represents one of the most important agricultural economic resources in the provision of food, where is the problem of constant encroachment on farmland and converted from agricultural use to other uses of non-farm as the total agricultural land has been encroached upon construction during the period Area (1983 - 2010) about 64 Thousand acres in addition to the encroachment on about 38.46 thousand acres since the wealth of January 25, 2011 until 28/9/2014, which led to a decline in the average per capita agricultural land in Egypt from about 0.133 acres / population in 1983 to about 0.112 acres / people in 2011, was where the study problem in increasing encroachment on the land Agricultural Giza especially governorate Doanh the post-January 25 Revolution 2010 study was conducted to identify the effects of Aguetsadahoalajtmaih leveling farmland in Giza Governorate 2017 season. Where the characteristics and motives of the establishment of private projects and land has been identified, and this motivation strengthens the doctrine of the importance of infringement by seeing others from projects that are based on their negative impact on the neighboring lands of the project, especially if the success of the project and the desire to imitate this behavior or create a new project The previous project, whether through raw materials or taking advantage of the product of the former resident on the lands beyond it, which sees the oppressor as an incentive for the tradition and Altadam on the infringement of the other and waiting for what happened to him before the establishment of a plant on the land beyond it and did not see the behavior of Alchk Meh it packs serious and immediate accountability and behavior, whether or removal or punishment Salehbh both. It was concluded that the owners of the first Mivkron project is the amount of income obtained by the search for the compensation of what was obtained before the establishment of the project and shows the table what the project owner gets from the agricultural land before the establishment of the project and the income obtained after the establishment of the project and depends on the difference in income, The project, where it was found that the owner of a poultry farm was obtained on average on 94.4 pounds / month as the value of rent or equivalent percentage of the crops produced from the area on which the project is established (poultry farm, which is 5.28 i), while the increase rose to 12.3 thousand pounds, increase of about 13.56% than once The average monthly income before the establishment of the stadium amounted to about 193 pounds / month, which rose about 8 thousand pounds / month, an increase of about 4145% of what was obtained of the agricultural land, while the income of the owner of the wedding hall before the establishment of about 113.3 pounds / month of agricultural land, while the rise to about 4 thousand pounds from the wedding hall, an increase of 3530% of what was obtained from the ground. Although the satisfaction of the projects on the land above it is much higher than the return of agricultural land, this high return of projects does not correspond to the degree of food deprivation for future generations as a result of conversion of agricultural land to special projects in all wars and the occurrence of fodder or influence the political decision to import food and provide of society as a whole.
اظهر المزيد [+] اقل [-]AN ANALYTICAL STUDY FOR EFFECT OF REDUCING WATER VORACIOUS CROP AREAS ON THE CROPPING PATTERN STRUCTURE AND ITS WATER NEEDS
2017
Said Morsi | Salah Mekled | Alaa Esabea
The research aimed to study the effect of reducing water voracious crop areas, such as (rice, sugar cane, bananas, alfalfa) on the available water quantity in the agricultural sector, where the data analysis showed that the most of the voracious crops especially rice and sugar cane are concentrated at the old lands within the valley as it explained in the research later, therefore, the research focused on inventory and analysis of the old land data within the valley to determine the best alternatives of the cropping pattern which achieves the state's goal of saving water and maximizing the return of the water unit, and is compatible with the current local, regional and environmental water conditions and the future developments that may occur in the future, that by using linear programming, through three models that have been formulated: the first is minimizing water requirement, the second model maximizes the net of acre return, while the third model maximizes the return of the water unit, using available data published and unpublished issued by the concerned authorities. The research focused mainly on the possibility of reducing the water needs of cropping pattern as a main objective, in addition to increasing the self-sufficiency ratios of strategic crops through the first scenario, and increasing the areas of export crops to increase the export proceeds through the second scenario, as far as possible within the available water and land area in the study area, using different statistical models. The results of the analysis of the statistical models in the first scenario showed that the total quantity of irrigation water available for the cropping pattern of the study crops reached 41.483 billion m3, while 38,604, 38.726, 38.683 billion m3 were used for the statistical models respectively, this indicates that the required water quantities decreased by 2.879, 2.758, 2.800 billion m3, with a change rate of about 6.94, 6.65, 6.75% for the statistical models, respectively. The net return of the water unit for the actual cropping pattern reached about 1.634 LE/m3, while it reached about 1.755, 1.767, 1.765 LE/m3 for the statistical models respectively, which shows the increase in net return of water unit by 0.122, 0.133, 0.131 LE/m3, with a change rate of about 7.46, 8.17, 8.05%, for statistical models respectively. The second scenario aims beside minimizing the water needs of cropping pattern, increasing export crop areas such as onions, peanuts, potatoes, tomatoes and other vegetables as much as possible, assuming situation stability of foreign trade. The results of the analysis of the statistical models in the second scenario showed that the total quantity of irrigation water available for the cropping pattern was about 41.483 billion m3, while 38,471, 38.912, 38.803 billion m3 were used for the statistical models respectively, indicating that the required water quantities decreased by 3.013, 2.572, 2.681 billion m3, with a change rate of about 7.26, 6.20, 6.46%, for statistical models, respectively. The net return of the water unit for the actual cropping pattern was about 1.634 LE/m3, while it reached about 1.773, 1.830, 1.833 LE/m3 for the statistical models respectively, which shows the increase in the net return of water unit by 0.139, 0.197, 0.199 LE/m3, with a change rate of about 8.53, 12.04, 12.21%, for statistical models respectively. Crop rotations can be applied to the new lands using water savings including (wheat and maize), with an area ranging from 2048 to 2399 thousand feddans, and including (wheat and summer and nili vegetables), with an area ranging from 2941 to 3444 thousand acres, also including (maize, winter and nili vegetables), with an area ranging from 3432 to 4021 thousand feddans. With regard to the impact of reducing the area of water crops to water gap which reached about 20.9 billion m3, it decreased by about 2.879, 2.758, 2.800 billion m3, which make water gap decreased to about 18.02, 18.14, 18.10 billion m3, with change rate of about 3.77, 3.61, 3.66%, for statistical models respectively, while the results of the second scenario show decreased of about 3.013, 2.572, 2.681 billion m3, which make water gap decreased to about 17.89, 18.33, 18.22 billion m3, with change rate of about 3.94, 3.37 and 3.51% for statistical models respectively. The research recommends the following points: 1. Reduce the areas of rice, sugar cane and alfalfa to save a quantity of water ranging between 2.572 - 3.013 billion m3 of land within the valley. 2. Using of water savings resulting from reducing the areas of water crops to expand the cultivation of new land with strategic and monetary crops. 3. Sugar beet area can be expanded at least to the extent that it covers the shortage of sugar production caused by reducing the sugar cane area, then taking into account and study the effects resulting from that. 4. Modification of cropping patern structure to be in accordance with the local, regional, environmental situations that may affect current and future water availability.
اظهر المزيد [+] اقل [-]STATISTICAL ESTIMATION OF PRODUCTION FUNCTIONS AND AGRICULTURAL COSTS AND MEASURES OF PRODUCTIVITY EFFICIENCY OF WATER USERS' ASSOCIATIONS OF DIFFERENT IRRIGATION SYSTEMS IN AL-BEHEIRA GOVERNORATE
2017
M. Ibraheim | M. Rehan | H. Sarhan | S. Makled
Egypt suffers from future risks due to lack of water especially in the downstream countries, Egypt and Sudan, which depend on the Nile water almost entirely and the upstream countries are moving to raise problems with Egypt and erect dams and pressure on Egypt to achieve the greatest economic benefit possible to prevent Egypt from horizontal agricultural expansion. Egypt is the largest and most dependent country on Nile water, with almost no rainfall. Groundwater is not renewable. Thus, the Nile water accounts for about 97% of Egypt's water resources and the share of the Egyptians is 55.5 billion m3, this quantity of water is insufficient to the needs of the population, and in order to maintain Egypt's per capita water, it needs about 80 billion m3, which means a deficit of 25 billion m3 and stability of Egypt's share of the Nile water under current local, regional and global conditions, and development of the appropriate strategy to alleviate the conflict with the basin countries Nile River so the study aimed to compare production efficiency and the economics of the irrigation systems used in the province of the lake through the study of water user associations in agriculture under the different irrigation patterns within water users association and outside association to rationalize the use of water and raising awareness to increase productivity. The results of the estimation indicated that the economic efficiency indicators of the maize and potato crop farmers in the sample of the field study show the preference of the use of the production function in the logarithmic formula to the different variables affecting the productivity of the crops according to the irrigation systems within the water user associations The results showed that the total production elasticity of maize crop was about 0.720, 0.530, 0.348 for sprinkler & drop, developed irrigation, and padded flooding systems, while the value of (R2) was about 0.76 , 0.60, 0.63 for irrigation systems respectively, The results showed that the total productivity of the potato crop was 1.127, 1.16, 1.318, for sprinkler & drop, developed irrigation, and padded flooding systems respectively, while the value of (R2) was about 0.76, 0.62, 0.70 for irrigation systems respectively. The relationship between the total costs and quantity produced of maize, which showed that the quadratic formula is the best formulas for the data, and the equations show that there is a statistically significant positive relationship between the total costs and production of maize in Behera Governorate. In the estimation of the optimal production volume, which reduces the costs is estimated at about 18.7, 22.1, 23.9 ardab/feddan, for sprinkler & drop, developed irrigation, and padded flooding systems respectively. In the estimation of the production volume which maximizes profit, the results showed that this volume was not reached, 29.1, 36.1, 31.9 ardab/feddan, for sprinkler & drop, developed irrigation, and padded flooding systems respectively. Calculating cost elasticity, it reached about 1.19, 0.804, 0.719, for sprinkler & drop, developed irrigation, and padded flooding systems respectively. In order to determine the optimal production volume of the potato crop, which reduces the costs, so make average cost equal marginal costs, estimated at 12.539, 11.377, 11.064 tons/fed, for sprinkler & drop, developed irrigation, and padded flooding systems respectively. The size of production of potato that maximizes profit was about 42,500, 33.350, 25.600 tons/fed, for sprinkler & drop, developed irrigation, and padded flooding systems respectively. Calculating the cost elasticity of the potato, it turned out that it was about 0.93, 0.804, 0.719 for sprinkler & drop, developed irrigation, and padded flooding systems respectively. Production efficiency measures are (7), the study of the efficiency of production of maize crop for members of water associations in the sample of the study in Behera Governorate. It was found that the members of the water users association of developed irrigation for in the feddan productivity of maize was exceeded, which was estimated at 23.01 ardab/feddan, while it reached about 19.05, 22.1 ardab/feddan for sprinkler & drop, and flooding systems respectively. Increase the total revenues of the members of water user associations to developed irrigation system for the maize crop, estimated at 8744.7 pounds/feddan while it reached about 7239, 8402.2 pounds/fed for members of the water associations that use sprinkler & drop, and flooding systems respectively. Increase in return of maize crop for members of water associations users of developed irrigation system, which amounted to about 3529.3 pounds while estimated at about 2204.8, 3270.1 pounds for members of water use associations for sprinkler & drop, and flooding systems respectively. Increase in the profitability of the pound for water use associations of developed irrigation system, which amounted to about 0.677 pounds, the ratio of the total return on the costs of the members of water use associations to flooding irrigation and developed irrigation, estimated at 2.03, 2.07 while estimated at 1.71 sprinkler irrigation, members of water user associations of the developed irrigation system was exceeded, where the return of cubic meter of water reached about 3.53 pounds, and the productivity of the cubic meter of water for the members of the water user associations showed that the irrigation system of sprinkling and drip was about 5.6 for maize crop. The members of water use associations of for sprinkler & drop irrigation in the potato productivity was exceeded, estimated at 11.250 tons/fed, increase the total income of The members of water use associations of irrigation sprinkling and drip of potato crop, estimated at about 33750 pounds/ fed, shows the increase yield of potato crop members of links irrigation sprinkler system, where reached about 11300 pound. Increase in the profitability of the pound for the members of sprinkler irrigation system, it was about LE 0.5. The members of the water users association of the sprinkler and drip irrigation system, was exceeded, where the return of the use of cubic meters of water was about 18.9 pounds. Showing the return of the use of cubic meters of water for the members of water users association for sprinkling irrigation system, which amounted to about 5.6, The cultivation of maize, and potatoes in the water users' associations was exceeded compared to the different irrigation system in all the centers in the study sample. The second scenario aims beside minimizing the water needs of cropping pattern, increasing export crop areas such as onions, peanuts, potatoes, tomatoes and other vegetables as much as possible, assuming situation stability of foreign trade. The results of the analysis of the statistical models in the second scenario showed that the total quantity of irrigation water available for the cropping pattern was about 41.483 billion m3, while 38,471, 38.912, 38.803 billion m3 were used for the statistical models respectively, indicating that the required water quantities decreased by 3.013, 2.572, 2.681 billion m3, with a change rate of about 7.26, 6.20, 6.46%, for statistical models, respectively. The net return of the water unit for the actual cropping pattern was about 1.634 LE/m3, while it reached about 1.773, 1.830, 1.833 LE/m3 for the statistical models respectively, which shows the increase in the net return of water unit by 0.139, 0.197, 0.199 LE/m3, with a change rate of about 8.53, 12.04, 12.21%, for statistical models respectively. Crop rotations can be applied to the new lands using water savings including (wheat and maize), with an area ranging from 2048 to 2399 thousand feddans, and including (wheat and summer and nili vegetables), with an area ranging from 2941 to 3444 thousand acres, also including (maize, winter and nili vegetables), with an area ranging from 3432 to 4021 thousand feddans. With regard to the impact of reducing the area of water crops to water gap which reached about 20.9 billion m3, it decreased by about 2.879, 2.758, 2.800 billion m3, which make water gap decreased to about 18.02, 18.14, 18.10 billion m3, with change rate of about 3.77, 3.61, 3.66%, for statistical models respectively, while the results of the second scenario show decreased of about 3.013, 2.572, 2.681 billion m3, which make water gap decreased to about 17.89, 18.33, 18.22 billion m3, with change rate of about 3.94, 3.37 and 3.51% for statistical models respectively. The research recommends the following points: 1. Reduce the areas of rice, sugar cane and alfalfa to save a quantity of water ranging between 2.572 - 3.013 billion m3 of land within the valley. 2. Using of water savings resulting from reducing the areas of water crops to expand the cultivation of new land with strategic and monetary crops. 3. Sugar beet area can be expanded at least to the extent that it covers the shortage of sugar production caused by reducing the sugar cane area, then taking into account and study the effects resulting from that. 4. Modification of cropping patern structure to be in accordance with the local, regional, environmental situations that may affect current and future water availability.
اظهر المزيد [+] اقل [-]ECONOMIC IMPACT OF USE OF HEAT STRESS ALLEVIATION IMPOSED ON CATTLE UNDER EGYPTIAN CONDITIONS
2017
S.A. Hasan | M. El-Saadany | E. Abdalla | Mona Ryad
Food security is the main objective of all countries that seek through their various economic policies to try to achieve their social and economic security and stability. The agricultural sector is one of the leading sectors of the national economy and one of the main pillars of economic development. The agricultural production in Egypt includes three main activities: plamt production Livestock production fish production, and the value of animal production in Egypt is about 36.5% of the total value of agricultural production. Undoubtedly, the heat stress on livestock under Egyptian conditions is one of the most important constraints for the production of milk In Egypt at various levels of cattle breeding in general and at the level of commercial farms in particular, which requires studying the economic return of the use of this technique and study the impact on the economics of dairy production. the objectives of the study were to study the current status of the development of the number of cattle producing milk in Egypt, as well as the development of the production quantities of dairy cows, the relative importance of each dairy production and the numbers of warheads, and to see the impact of the use of technology has been studying the statistical estimate of the production functions of milk sample study, as well as the statistical estimate of the terms of use of these costs Technology study sample. The most important results of what has resulted in the following: there is a growing trend year for the number of cows wholesale heads in Egypt during the study period, as they have increased by amounted to 104.24 thousand head annually, has been estimated coefficient of determination about 0.266, meaning that 26.6% of the changes occurring to the number due to Factors that reflect the effects of time. It may be shown that the increase in the number of dairy cattle heads in Egypt during the study period as an average is due mainly to the number of mixed cattle heads due to the apparent stability in the numbers of domestic and foreign cattle. It also shows that there is an increasing general trend of milk production for cows Wholesale in Egypt during that For a period, increasing by about 84.597 thousand tons per year. The R2 is estimated to be about 0.324, which means that 32.4% of the changes occurring in the milk production of cows are due to the factors that reflect the time component. Egypt. Scenarios for the statistical estimation of the cow dairy production function were carried out in the sample of 100 cows before using the technique and 100 cows after using the technology. The elasticity of production prior to the use of the technology was about 0.24, after the use of 0.22 technology. Finally, return m Milk production for dairy cows increased by 27.7 kg / day after the use of the technology at an increase rate of about 18.7% with an expected yield of about 97.7 pounds per cow per day for 87.4 pounds per cow before using the technology. the impact of the use of clear technical and increase the expected return of the cows used our farms under study, which requires dissemination of the use of the technology on the rest of the cattle farms in all parts of the country because of its great economic returns.
اظهر المزيد [+] اقل [-]SOME PHYSIOLOGICAL AND BIOCHEMICAL EFFECTS OF ABAMECTIN AND PYRIPROXYFEN AGAINST THE PINK BOLLWORM, Pectinophora gossypiella (Saund.)
2017
L. Youssef
The toxic effect of Abamectin and Pyriproxyfen action on the 1st instar larvae of the pink bollworm, Pectinophora gossypiella (Saund.) was studied under laboratory conditions. The toxic action of the tested compounds at their estimated LC50 values on some biological aspects of the treated insect as well as total protein content and the activity of b-esterase in the affected larvae were also studied. Based on the obtained results, abamectin was more toxic than pyriproxyfen after 24, 48 and 72 hr of treatment. In addition, the effect of treatment with the LC50 value of both tested compounds on newly hatched larvae was extended to the following developmental stages, represented as some morphological deformities. Also, total protein content in treated larvae increased than their control when Pyriproxyfen was tested but decreased when Abamectin was administered to larval diet. The electrophoretic analysis using SDS-PAGE for β-esterase enzyme in the larval stage fed on diets treated with tested compounds showed clear variation in the dense and number of enzyme bands.
اظهر المزيد [+] اقل [-]ESTIMATING THE DEMAND FUNCTIONS FOR CHEMICAL FERTILIZERS IN BANI SEWAF GOVERNORATE
2017
Howayda Botros | M. El-Eraky | S. Qandil | M. Abdel-Fatah
This research is concerned with the estimation of farmer’s demand for chemical fertilizers. The data were collected from a sample of farmers in two villages in Bani Sewaf Governorate in the summer of 2015. Most farmers use two kinds of fertilizers; namely urea and superphosphates. Urea is provided to farmers in certain quotas at subsidized prices through the government controlled agricultural cooperatives. Farmers however find it necessary to rely on the free market to supplement the subsidized quotas of urea. The research begins by estimating the Cobb-Douglas production functions for two field crops which are wheat and maize. Then the production functions coefficients are used to calculate the underlying cost functions. From the cost functions we were able to drive the conditional demand functions for chemical fertilizers with the help of Shephard’s lemma. The estimates of all functions seem reasonable and consistent with economic theory. The elasticities of wheat production with respect to urea and superphosphates are 0.27 and 0.03 respectively. The wheat cost function is an increasing function in input prices and in output level. The conditional demand function for urea in wheat production is homogenous of degree zero in input prices; that is doubling the input prices will leave the demand for urea unchanged. Similar results for the maize crop were attained. The maize production elasticities with respect to urea and superphosphates are 0.16 and 0.06 respectively. The results are statistically significant. The isoquant equation indicates that decreasing urea application by 0.42 sack can be compensated by increasing superphosphates application by one sack in order to keep the level of maize production at 18 ardab per feddan. The conditional demand function for urea reveals that an increase in the price of urea by EGP 5 would reduce the demand for urea by 0.78 sacks.
اظهر المزيد [+] اقل [-]