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EFFICIENT TRANSPORT AND DELIVERY OF WATER IN EGYPTIAN AGRICULTURE Texte intégral
2019
Mohamed Osman | S. Meklad | M. Abdel-Fatah
The problem of research is limited to how to rationalize the use of water in the agricultural sector under the current situation, such as the construction of the Nahdha Dam, which will affect Egypt's share of the Nile River. On the other hand, the increase in water demand, the misuse of water resources in Egyptian agriculture and the inefficient use of water resources Which is reflected in the return of the water unit. The research aims at identifying the efficiency of water transport and delivery in Egyptian agriculture from its main source in the southern region of Egypt at Aswan until it reaches the fields in all the governorates of the Republic. The research aims in particular to study the development of irrigation water quantities and their losses in Egyptian Agriculture The amount of water used on the waste. The study showed that the average amount of irrigation water used in the field, at the completion of the canals, and in Aswan was about 36457, 41042 and 51515 million m3 respectively during the study period. In the study of the general trend of the development of irrigation water used in the field, when the canal was completed, and in Aswan during the study period, the increase of these quantities was estimated at an annual average of 96.38, 46.3 and 73.9 million cubic meters respectively. The average annual loss of water from Aswan to the field, from Aswan to the fins of the canals, and from the canal and field fillers reached 15057, 10477 and 4380 million cubic meters respectively during the study period. A study of the general trend of the development of water losses from Aswan to the field, and from Aswan to the dams of the canals, showed that the water losses decreased by a statistically significant annual increase of about 21.9, 273.9 million cubic meters respectively during the study period. While water losses from canal and field fill increased by a statistically significant annual increase of 272.0 million cubic meters dThe results of the statistical estimation of the relationship between the quantity of water losses as a dependent variable and the quantity of water used as an independent variable during the period: .
Afficher plus [+] Moins [-]GENETIC DIVERSITY ASSESSMENT OF IN VITRO IRRADIATED TOMATO (LYCOPERSICON ESCULENTUM MILL.) USING SCOT MARKERS Texte intégral
2019
O. Helmy | A. Abo Doma | El-Fiki El-Fiki | Eman Fahmy | G. El-Metabteb | M. Adly
Tomato (Lycopersicon esculentum Mill.) is considered the major and important globally vegetable crops especially in Egypt. Tissue culture techniques have facilitated the induction of mutant which helps in crop improvement. The mutation induction in vegetative crops through tissue culture may be the optimal method to improve these crops. Tomato explants of Idkawy Egyptian cultivar were cultured in vitro on MS medium supplemented with 0.2 mg/L BAP. The resulted plantlets were irradiated with different gamma radiation doses (50, 100, 150, 200 or 250 Gy) and the survival and mean of shoot length decreased as gamma radiation doses increased. The survival percentages of irradiated plantlets were ranged from 78.75% with 50 Gy dose to 18.75% with 250 Gy dose, while the shoot length values were decreased by a rate of 2.71 cm for dose 50 Gy and 1.2 cm for 250 Gy dose. The ten SCoT primers amplified a total of 114 amplicons with a range from 4 with SCoT-4 primer to 18 amplicons with SCoT-5 primer with an average of 11.4 amplicons per primer, The radiation specific markers were ranged from one fragment with SCoT-1 and SCoT-2 primers, SCoT- 5 two fragments with primer to five fragments with SCoT-3 and SCoT-33 primers.
Afficher plus [+] Moins [-]LIPID METABOLISM IN DIABETIC RATS AS AFFECTED BY CANOLA AND MUSTARD SEED SPROUTS Texte intégral
2019
Hanaa Amer | Tahany Aly | K. Tobgy | M. Abdallah | N. El-Shahat
Canola (Brassica juncea L.) and mustard (Sinapis alba L.) seed sprout effects on diabetic rats have no available information and to clarify their effects, both sprouts were investigated in streptozotocin (STZ) induced diabetic and normal rats. Rats were fed on a semi-modified diet containing 10% of canola or mustard sprouted using tap or saline water for sprouting ad-libitum for 6 weeks. STZ showed increases in blood sugar, low density lipoprotein cholesterol (LDL-c), vary low density lipoprotein cholesterol (VLDL-c) and triglycerides (TG). The addition of canola and mustard with or without salinty at 10% to diabetic rats diet as semimodified diet resulted a significant decrease in blood glucose, TG and VLDL-c and data was more pronounced using mustard sprouted or saline water without changes in the HDL-c parameter. These results showed that canola and mustard especially mustard sprouted in saline water had a hypoglycemic activity in diabetic rats and partly improved lipid metabolism in the experimental rats, with non-toxic to rats in doses given over 6 weeks period in this study.
Afficher plus [+] Moins [-]EFFECT OF DIFFERENT NITROGEN FERTILIZER RATES AND SOURCES ON LEAF CHEMICAL COMPOSITIONS AND YIELD OF QUINOA PLANT AS A NEW LEAFY VEGETABLE CROP Texte intégral
2019
Heba Khater | M. Ragab | S. Youssef | Aisha Ali
Quinoa (Chenopodium quinoa Willd.) has gained increased a worldwide attention since 1970s when it has been revived as a new food crop, due to the attractive nutritive value and potential health benefits as well as to its exceptional tolerance to several environmental stresses. It is considered as a new non-traditional leafy vegetable crop newly introduced to Egypt. Nitrogen requirements for quinoa plants are not clarified yet and the numbers of studies is still quite limited. The present study was conducted to evaluate the effect of nitrogen sources as ammonium sulfate 20.6% or calcium nitrate 15.5% used at rates of 40, 60 or 80 kg N/feddan on leaf chemical compositions and yield of two quinoa cultivars of Cica and Hualhuas harvested after 40 days from sowing date. A field experiment was carried out at the Experimental Farm of the Horticulture Dept., the Faculty of Agriculture, Ain Shams University, Shoubra El-Kheima, Cairo, Egypt, during the two winter seasons of 2015 and 2016. The treatments were laid out in a split plot design, with three replicates. The obtained results revealed that Cica cultivar was superior to Hualhuas concerning all measured chemical parameters of leaves and leaf yield during both seasons, except for leaf contents of chlorophyll a, b and total chlorophyll, ash, fats, Ca and Fe, where Hualhuas cultivar was superior to Cica in these parameters. However, no significant differences were detected between both cultivars regarding leaf carbohydrates content in both seasons. Re garding nitrogen rates and sources, quinoa plants received 80 kg N/feddan as calcium nitrate gave the highest significant values of carotenoids, nitrate, proteins, ash, N, K and Fe contents in both seasons of the study. Whereas, nitrogen treatment of 80 kg N/feddan from ammonium sulfate gave the highest values of leaf contents of Ca and leaf yield in both seasons. Nitrogen treatment of 60 kg N/feddan from calcium nitrate showed the highest significant values of chlorophyll a, b and total chlorophyll contents during both seasons. No significant differences were realized among all nitrogen treatments (rates and sources) on P content in both seasons. In relation to the interaction effect, the results clearly revealed that leaves of Cica plants received 80 kg N/feddan either from ammonium sulfate or calcium nitrate recorded significant increases in carotenoids, nitrate, proteins, ash, N, P, K and Na contents as well as yield without significant differences between them. On the other hand, the best values of chlorophyll a, b, total chlorophyll in both seasons were attained when Hualhuas plants received 60 kg N/feddan from calcium nitrate. Moreover, there were no significant differences noticed among nitrogen treatments applied to Cica plants in both seasons on Na. Furthermore, the best values of Zn content were obtained when Cica plants treated with 40 kg N/feddan from ammonium sulfate or 60 kg N/feddan from calcium nitrate without significant differences between them in both seasons of the study. Given the experimental conditions of this study, it is concluded that Cica plants received 80 kg N/feddan either from ammonium sulfate or calcium nitrate gave the highest yield of leaves with acceptable quality attributes.
Afficher plus [+] Moins [-]EFFECT OF SOAKING AND SPROUTING USING SALINE WATER ON CHEMICAL COMPOSITION OF WHEAT GRAINS Texte intégral
2019
T. Hussein | Y. Abd El-Shafea | U. El-Behairy | M. Abdallah
In the current research, wheat grains were used to study the effect of grain soaking and sprouting using tap water and saline water (NaCl solution) on sprout growth, proximate analysis, minerals content, anti-nutritional and antioxidant compounds of sterilized grains (soaked for 0.33h) and soaked grains for imbibition (12h) and sprouted grain for 24h old. Results revealed that the longest radical of 24h old wheat sprout was observed at 2000 ppm NaCl, and shortest was observed at 4000 ppm NaCl. Soaked wheat grains (12h) for imbibition recorded the highest moisture content (10.2 to 10.9%) while soaked for 20 min (0.33h) in calcium hypochlorite for sterilization recorded medium content (8.8 to 9.9%) and the lowest one recorded in 24h old wheat sprouts (6.9 to 7.2%). The low moisture content the high total carbohydrate, total fats and energy and vice versa. Soaked grains for sterilization period (0.33 h) and imbibition (12h) increased zinc (Zn), manganese (Mn) and calcium (Ca) while non-sterilized only potassium (K). Tap water increased sprout magnesium (Mg), and manganese (Mn) content while saline water increased sprout magnesium (Mg), and calcium (Ca) content. Grain sprouting was effective in reducing phytic acid, oxalate and alkaloids anti-nutrient in wheat sprouts especially when using sterilized grains. Soaking non sterilized grains for imbibition (12h) in saline water contained higher total phenol, flavonoids and total antioxidant. Etiolated wheat sprouts contained lower total flavonoids and antioxidant compared with soaked grains in saline water.
Afficher plus [+] Moins [-]IN-OVO INCULATION OF SELENIUM NANOPARTICLES IMPROVES PRODUCTIVE PERFORMANCE, BLOOD BIOCHEMICAL PROFILE, ANTIOXIDANT STATUS AND IMMUNE RESPONSE OF HATCHED CHICKS Texte intégral
2019
N. Mohammad | I. El-wardany | Y. El-homosany | Magda Wakwak | E. Sabic | N. Ibrahim
Selenium is a trace element essential in animal nutrition and exerts multiple actions related to enhance animal production, fertility, immune response and antioxidant defense system of chickens. The aim of the present study is investigating the benefit effects of selenium nanoparticles (SEN) in-ovo injection on productive performance, express stimulate antioxidant defense system and immune response of hatched chicks. A total of 210 broiler breeder eggs ( Habbard Star-Bro) were divided into three in-ovo injection treatment groups,( 0, 5 and 10 ppm SEN) and incubated. Hatchability traits , productive performance, biochemical profile, antioxidant status and immune response of hatched chicks were estimated. Results indicated significant increase in HDLcholesterol, T3, GSR, GSH, IGA, IGM and IGG as affected by in-ovo inoculated SEN levels. However feed conversion ratio, triglycerides and MDA significantly decreased by in-ovo treatments. No significant alternations were recorded in hatched chicks weight, feed intake, body weight, body weight gain, carcass characteristics, and serum levels of protein fractions, cholesterol, LDL- cholesterol, ALT, AST, ALP, uric acid, creatinine and glucose in in-ovo treated groups compared with the control one. It is summarized that, in-ovo inoculation of different levels of SEN can improve feed conversion ratio, lipid profile, antioxidants status and immunity of broiler hatched chicks.
Afficher plus [+] Moins [-]IN VITRO PROPAGATION OF PLECTRANTHUS BARBATUS ANDREWS AS IMPORTANT MEDICINAL PLANT Texte intégral
2019
Dina Mahmoud | Lamyaa Sayed | M. Diab | Eman Fahmy
Plectranthus barbatus Andrew (Coleus forskolii) is one of the important species of the genus Plectranthus (Coleus) belonging to family Lamiaceae, with a many of traditional medicinal uses in India. C. forskolii is only known source of forskolin; a compound with a many uses in pharmaceutical industries. C. forskolii was lack in Egyptian flora. Moreover, there were no previously studies on this plant in Egypt. Therefore, the present study used tool of biotechnology to conserve the stocks of this plant by micropropagation. C. forskolii seedlings came from its native Thailand at June 2013 and were put in the greenhouse in Desert Research Center for creating an efficient micropropagation protocol. The study was carried out on the effect of growth regulators (cytokinins and auxins) on different micropropagation stages of the explants. In multiplication stage, initiated shoots were cultured on MS medium supplemented with various concentrations (0.5, 1.0, 1.5 and 2.0 mg/L) of cytokinins (6-benzylaminopurine (BA), Kinetin ( KIN) and Thidiazuron (TDZ). The mean number of axillary shoots per explant of C. forskolii reached the highest value 6.19 ±0.573 on MS medium containing 2.0mg/L TDZ. Where, the highest value of mean length was 6.44± 0.310 cm on MS medium containing 1.0 mg/L KIN. The mean number of roots / explant of C. forskolii reached the highest value and the mean length were 30.00 ± 0.577 and 11.8±0.860 cm respectively, on 1/2 MS medium containing 0.5mg/L indole-3-butyric acid(IBA). While, the highest value of shoot length was 11.8±0.860 cm on 1/2 MS medium containing 2.0mg/L naphthalene acetic acid (NAA). A percentage of 83% of rooted plantlets were successfully acclimatized after four weeks and grown normally in the greenhouse in sterile soil mixture of garden soil, vermiculate and sand (2:1:1/v/v/v). The protocol could be cost effective and useful in germplasm conservation and delivery of tissue cultured Coleus plants.
Afficher plus [+] Moins [-]ECONOMIC EFFICIENCY OF AGRICULTURAL LABOR WITHIN THE DETERMINATES USE OF MODERN TECHNOLOGY FOR WHEAT IN EGYPTIAN Texte intégral
2019
Mona Abdel-Naby | M. Rehan | M. Nasr
The Egyptian agriculture relies on technology to develop the productivity of most of the main crops, including cereal crops, especially wheat, which is reflected in increasing of the cultivated area. According to the Sustainable Development Strategy (SDS): Egypt Vision 2030, The cultivated area with wheat had reached about 1326 thousand feddan in 1980, then it continued to increase until it reached about 1955, and2716 thousand feddan in 1990, and 2007 respectively, and reached its maximum in 2016 by about 3351 thousand feddan. Also, the productivity duplicated from about 1.36 tons/fed. in 1980, and reached about 4..2 tones/fed. in 2016. Egypt plans to reach the area cultivated with wheat to approximately 4.2 million feddan and about 3.6 tons/fed of its productivity in 2030, in order to increase Autarky to about 81% from the locally production. To achieve this target, the absorption of technology must be further increased by increasing the different technology methods, which is reflected in productivity increasing. Wheat crop was selected for the field study through the availability of field data to estimate some economic and statistical indicators that are difficult and it may be impossible to use the secondary data in its estimation. Also, The governorate of El-Behaira was selected According to the relative importance of wheat-cultivated area,where as total area is about 378 thousand feddan representing about 11.27% of total Egyptian cultivated area, it also selected according to the availability of different types of machines which existing in that region. The study aims at estimate the economic efficiency of agricultural labor use in the light of specific modern technology which is used in Egyptian agriculture, represented by agricultural mechanization technology from the production farms of wheat crop in El-Behaira governorate during the agricultural season (2015-2016) in the short and long run of wheat farmers, where a simple random sample was selected from three villages in El-Behaira governorate (Berijat, Damshli, Alqam), The sample units divided three categories: the first category (less than 0.5 feddan), the second category (0.5 feddan - feddan), the third category (feddan and more) Short and long run for each category, in order to estimate some indicators of production and economic efficiency, and economics of scale. The estimation of short-run production function shows that total elasticity is about 1.3, 1.3, and 1.06 for the first, second and third categories of the sample respectively, while total elasticity is about 1.1 in the long-run, which reflecting the increasing returns to scale and farmers are producing in the first phase of the law of diminishing returns. The estimate of the cost functions in the short-run shows that the optimal production is about 14.1, 36.4 and 88.3 ardabb respectively for the three categories in the study sample, and the optimal production is about 47.7 ardabb in the long-run.
Afficher plus [+] Moins [-]SIMULTANEOUS EQUATIONS MODEL FOR LABOR MARKET IN THE EGYPTIAN AGRICULTURAL SECTOR Texte intégral
2019
Rania Youssef | Fatma Fahmy | Mona Ryad
The problem of research is the low and low wages in the agricultural sector, which makes it an employment sector, indicating that there is imbalance in the structure of the labor market in the agricultural sector, and thus the current deviation of agricultural employment from the optimum level that achieves economic efficiency, hence the main objective of The research is to assess the equilibrium situation of the labor market in the Egyptian agricultural sector, and determine the most important factors affecting it, through the study of both sides of the demand and supply of agricultural labor through Simultaneous Equations Model. The most important results obtained were: 1 - For the function of demand for agricultural labor: It was found from the estimated equation that the increase in the wages of the agricultural worker by one pound leads to a significant statistical decrease at a significant level of 5% in the demand for agricultural labor by about 135 thousand workers, as shown from the estimated equation Effect of production value Agricultural demand for agricultural employment amounted to about 29.7 thousand workers million workers. The impact of the supply of agricultural labor in the demand for agricultural labor, which reached about 645 thousand workers, was also shown. 2- For the agricultural labor supply function, the estimated equation shows that increasing demand for agricultural labor leads to an increase in the supply of agricultural labor by 1 million and 9,000 workers. It is also shown from the estimated equation that increasing the wage of the agricultural worker by one pound leads to an increase in the supply of agricultural labor by about 39 thousand workers. 3- As for the equilibrium situation of the labor market in the Egyptian agricultural sector, it was found that the wage of the agricultural worker amounted to about 43.338 thousand pounds / year, ie about 118.73 pounds / day, which is different from the actual situation of the wage of the agricultural worker, which averaged 26.164 thousand pounds / year Ie about 71.68 pounds / day as an average for the last three years. This means that the wage of the worker in the agricultural sector is less than the equivalent of 47.05 pounds per day. In addition, the total number of agricultural workers in the agricultural sector reached about 6.34 million workers, which differs from the actual situation of the supply of agricultural labor which reached 7.780 million workers as an average for the last three years. This means increasing the supply of agricultural labor to the balanced size of agricultural labor by (1.44 million workers), which explains the low wages in the agricultural sector, in order to load the agriculture sector with a larger number of workers than is supposed to be and hence the low wage in the agricultural sector and thus become an employment sector that will negatively affect the attractiveness of investments in the agricultural sector Which represents a sector Wide in the Egyptian economy is not negligible.
Afficher plus [+] Moins [-]EFFICACY AND BIOCHEMICAL EFFECTS OF SOME INSECTICIDES AGAINST COTTON LEAFWORM, Spodoptera littoralis (BOISD.) Texte intégral
2019
Rasha Sleem | M. El-Zemaity | M. Hussein | Sherifa El-Sherif
he efficiency and biochemical effects of certain insecticides belonging to different groups namely: flubendiamide (diamide), pyridalyl (phenoxy-pyridaloxy), clothianidin (neonicotinoide), fipronil (phenylpyrazole) and spirotetramat (tetramic acid) and pirimiphos-methyl (Ops) were tested against 2nd larval instar of Spodoptera littoralis laboratory strain using dipping technique. The efficacy of the tested insecticides are arranged as follows to LC50 values. The results showed that flubendiamide was the superior toxicant insecticides ( LC50 1.03 ppm) followed by pyridalyl (2.13 ppm) then fipronil (7.42 ppm), clothianidin (26.87ppm), pirimiphos-methyl (76.31 ppm) and spirotetramat (431.91 ppm). Biochemical effects of the tested insecticides on acetylcholine esterase (AChE), glutathione-s-transferases (GST), adenosinetriphosphatase (ATPase), phenoloxidase, total calcium, and total protein were determined in the treated larvae. Data showed highest significant increase at AChE activity in treatment of fipronil by change% (70.59), while treatment with pirimiphosmethyl recorded highest significant decrease by change% (-56.41). Whereas, all treatments recorded increase in GST activity except pirimiphosmethyl recorded non significant decrease. All insecticides treatments were showed a decrease in phenoloxidase activity the highest decrease recorded by pirimiphos-methyl treatment by change % (- 53.06). Regarding change percentage of ATPase, activity data recorded significant increase with pirimiphos-methyl treatment by (72.91%). However, total protein in all treatments showed a significant decrease. On the other hand, treatment with pirimiphos-methyl recorded a significant decrease in total calcium and the corresponding change % was (- 6.0%). Previous data confirmed the mode of action of the novel tested insecticides.
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