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ISOLATION, SCREENING AND IDENTIFICATION OF PROMISING YEAST ISOLATES USED FOR BIOLOGICAL CONTROL OF ORANGE GREEN MOULD
2015
Shehata, S. T.
Ninety nine yeast isolates were isolated from surface of apple, grape, orange and tomato fruits. The isolates were tested in vivo in preliminary study for biocontrol potential against green mould of navel orange fruit. According to primary screening, twenty two isolates were selected to continue the secondary screening (phase one) using different concentrations of the washed yeast cells in water suspension to evaluate their biocontrol efficacy at 21±1°C. Among twelve yeast isolates were passed to the secondary screening (phase two) at 7±1°C, washed cells of yeast isolates CT 503, CT 507, CT 508, CT 512 and CT 550 at 1x109, 2x108 and 1x108 CFU/ml produced complete protection for 21 days to wounded navel orange fruits inoculated with spore suspension of Penicillium degitatum (1x104 conidia /ml). Meantime, no lesions developed on the navel orange fruits treated with the yeast isolates CT 503, CT 507 (Debaryomyces hansenii var. hansenii strain C) and CT 512 (Endomycopsella vivi) at 6.6x107CFU/ml, while the percentage of rot reduction of the isolate CT 550 (Candida edax) was 99.81%. Culture filtrate of twenty two different yeast isolates used in secondary screening (phase one) did not prevent decay of wounded navel orange fruits but had an inhibitory effect on rot development. The relative abilities of the promising yeast isolates (CT 503, CT 507, CT 512 and CT 550) to induce disease resistance against P. digitatum on navel orange fruits were studied. Inoculation of promising yeast isolates significantly triggered induction of resistance in navel orange fruits. The lesion diameters of green mould 66 hours later after inoculation by spore suspension of P. digitatum in a neighbouring wound that was made approximately 6 mm away from the initial woundwhich inoculated withthe isolates CT 512, CT 550, CT 507 and CT 503 were reduced by 25.5%, 20.5%, 16.7% and 14.1%, respectively. In this respect, there were no significant differences among the three different isolates CT 503, CT 507 and CT 550.
Afficher plus [+] Moins [-]THE IMPACT OF TRAINING PROGRAM FOR HYDROPONICS (AGRICULTURE ROOFS)ON A GROUP OF TRAINEES IN DESERT RESEARCH CENTER
2015
Zeinab M. Abdelrahman
The research to identify the impact of the training program held at the Desert Research Center en titled" hydroponics" ((Agriculture roofs) to change the level of knowledge of the trainees related to agriculture, water (Agriculture roofs), and to identify trainees in the program, and the most important problems faced by the trainees during the training , in addition compare what was actually gained and what to is expected , therefore it may be able to develop a proposal for a training program for the Agriculture roofs a questionnaire is made before and after the participants attending program held by the Desert Research Center among a large number of projects implemented by different bodies totally training programs thirty two trainees attending training it for four hours a day over consecutive days two (19 - 20) in January 2014. Frequencies, Proportion, will cocoons test, used to data analysis. The results of the analysis show that there is a change in the level of knowledge of the trainees with regard to agriculture, (the Agriculture roofs) compare with then prior the number of trainees knowledge has increased from 18%to 59.3% after attending the program. In general the notice of trainees attending to the program has in creased to almost 53%. Problems faced the trainees were that they were not able to visits agriculture roofs models and training on such system. This my help to comp air then knowledge before on often attending the program , the program used depends on theoretical, CDs and not used posters, demonstration of practical viewing and , posters or clarify the practical displays the results, clarification of practical experience , participation of trainees, thus other important issue uses such as cultivation methods, diseases and actual costs wear not available to trainees finally the program has evaluated the knowledge of trainees at the end of program whit out refining to then knowledge at the beginning the program.
Afficher plus [+] Moins [-]NEGATIVE INTERRELATIONSHIP BETWEEN NUMBER OF BERSEEM CUTS AND COTTON YIELD AS A FOLLOWING CROP
2015
Rizk, T. Y. | El-Agroudy H. | El-Sherif M. | Zizy M. Abbas
The present investigation was carried out at the Experimental Farm of the Faculty of Agriculture at Fayoum, Cario University at Dalla, Fayoum Governorate during the two seasons 2000/2001 and 2001/2002. The aim of this investigation was to study the effect of organic manure and number of berseem cuts on cotton yield and its components and fiber traits. The obtained results indicate that only plant height at harvest, number of fruiting branches / plant and the height of the 1st fruiting branch were significantly affected by organic manure (O.M.) application. On the other hand, organic manure did not affect significantly the seed cotton yield, yield components and fiber quality traits. Cotton planting dates affected significantly all studied vegetative growth, seed cotton yield, yield components and fiber quality traits. Early planting date (1st week of March) showed significant superiority over the other two planting dates (1st week of April & May) in number of fruiting branches/ plant, number of days to 1st flower appearance and 1st boll opening, number and weight of open bolls/ plant in the 1st& 2nd pickings, seed cotton yield, lint percentages and studied fiber quality traits. The decreases in the total seed cotton yield attributed to the late planting dates (1st week of April & May) amounted 26.4 and 84.8% and 30.6 and 84.1% of March planting with the treatments of 10 and 20 m3/ fad organic manure, respectively.
Afficher plus [+] Moins [-]EFFECT OF USING SOME TREATMENTS ON SWEET PEPPER IRRIGATION AND ITS EFFECT ON FRUIT YIELD AND ITS QUALITY
2015
Usrya, A.I. Byan | Nahed, M.M. El-Shimi
Two field experiments were carried out during two summer seasons of 2013 and 2014 years at the Experimental Farm of Kaha Station, Qalubia Governorate to study the effect of using three irrigation intervals (7, 15 or 21 day) and five treatments of water absorbent substrates as adding to soil before transplanting ,i.e. (without substrates (control), SAP at 15 kg/fed., SAP at 20 kg/fed., compost at 5 t/fed. and compost at 10t/fed.) on sweet pepper plants c.v. Mohanad and the effect of that on growth, yield, physical and chemical characters of sweet pepper fruits. The results indicated that, the highest values of all vegetative growth parameters, yield and yield components were registered by the treatment of 7 days or 15 day irrigation intervals. Concerning of using water absorbent substrates, it was found that, pepper plants grown in the soil fertilized at 10 t/fed. or treated with super absorbent polymer (SAP) 20 kg/fed., respectively gave the highest values of vegetative growth parameters, yield and yield components.It is obvious that the plants fertilized at 10 t/fed. and irrigated every 7 days gave the highest values of fruit length, fruit diameter, fresh fruit weight and total yield. While, plants treated with SAP at 20 kg/fed. and irrigated every 15 day gave the highest values of fruit diameter and fresh fruit weight, but the differences did not reach to significance level for fruit length and early yield in both growing seasons. On the other hand, compost at 10 t/fed., compost at 5 t/fed. and SAP at 20 kg/fed. with irrigation every 21 day were the best treatments for yield and yield components of pepper plants. Generally, it can recommend by using compost at 5 t/fed., or super absorbent polymer (SAP) at 20 kg/fed. with irrigation every 15 days and this mean that increased the irrigation period without any injury or statistical effect on the fruit crop to obtain high pepper fruit yield with height quality and height net income to the growers.
Afficher plus [+] Moins [-]ECONOMICAL AND ECONOMETRICAL ANALYSIS OF POTATOES CROP IN REPUBLIC OF YEMEN, (DHAMAR PROVINCE – CASE STUDY FOR THE YEAR OF 2014)
2015
Al-Akwa Ali | Mabrok Sharaf
In spite of the development observed in the area and production of potatoes crop in Yemen for the period of (1990-2010) to the level of self-sufficiency, the exported quantity, however, still very limited, It even decreased sharply in 2010 by 84.5%, compared to it's level exported in 2006. Stagnant productivity of potatoes in Yemen at around 13 ton only per-hectare, in front of (35- 45) ton/h globally, is believed to be the main obstacle standing behind the failure of exportation the Yemeni potatoes to the abroad. According to field study, several results have been obtained, the most important of which: The variables, such as, chemical fertilizer, equipment, manure and seeds are found to be the most effective factors on the output of potatoes. It is proved statistically significant at (0.01) level and responsible for the change occurred in the production of sampled individuals by 77% (R2), however, the result show that the quantity used in the production process of potatoes by mentioned above factors fill short to meat the level of optimal quantity required to maximize the profit. The size of optimal level of production was estimated at (19.9) ton and the price of potatoes accepted by producers was estimated at 121390 YR/Ton. According to percentage of importance, seeds came first at the total variable cost by 31%, then, irrigation by 17.6%, fertilizers and pesticides 14.6%. Net revenue was estimated at (493640) YR, and the benefit /cost ratio was estimated at 1.40. The most important recommendation reached by this study is directed toward more using inputs in process of production by producers of potatoes, to maximize profit and increase productivity of area cultivated.
Afficher plus [+] Moins [-]WHEATGRASS JUICE AND ITS NUTRITIONAL VALUE AS AFFECTED BY SPROUTING CONDITION
2015
Dina A. Anwar | Abou El-Yazied A. | Thanaa, F. Mohammadi | Abdallah M.M.F.
Wheatgrass juice is the young grass of the common wheat plant (Triticum aestivum) freshly juiced for human consumption. The objective of the investigation performed was to assess the nutritional value of wheatgrass juice under laboratory and open field conditions at two different cuts. Protein, chlorophyll contents, minerals content (Ca, Fe, Mg, Zn and Se) and amino acids content as well as phytochemical constituents were determined. Grown wheatgrass at laboratory caused an increase of the protein content of its juice over open field condition. High chlorophyll content was observed under open field especially at second cut. Most of minerals content underwent to increase under open field except Mg content. Aspartic acid was recorded the highest amino acid in both laboratory and open field. Total essential amino acids were increased under open field condition at both first and second cut followed by first cut at laboratory. No big changes of natural phytochemicals constituents can shown between laboratory and open field condition while it was more pronounced compare with wheat seeds. The study suggested that sprouting wheat seeds at laboratory and open field improve the nutritional value of grass juice with preferably to laboratory condition especially at first cut and for saving agricultural land.
Afficher plus [+] Moins [-]PERFORMANCE AND STABILITY OF SOME BREAD WHEAT GENOTYPES FOR GRAIN YIELD, PROTEIN AND GLUTEN CONTENTS UNDER DIFFERENT ENVIRONMENTAL CONDITIONS
2015
El-Marakby A. M. | Afaf, M. Tolba | Saleh, S. H. | Abdel Samie, F. S. | El-Gabery, Y. A.
Seventeen genotypes (G) of bread wheat (14 promising lines and 3 commercial cultivars) were evaluated for mean performance and stability of grain yield/plant, grain protein content and dry gluten percentage under 16 environments (two locations (L), two sowing dates(D) and four fertilization treatments (F)). The resultsconfirmed the existence of considerable genetic variation among genotypes and their performance was significantly affected by different environments for the studied traits. Kalubia locations recorded the highest mean values for grain yield/plant while; Fayoum location recorded the highest mean values for the two quality traits. Yield and quality traits were significantly increased on early (recommended) sowing dates at Kalubia and Fayoum locations than on late sowing dates. Applying biofertilizer only gave the lowest mean performance in all traits, but adding mineral N besides biofertilizer markedly increased grain yield/plant and the two quality traits. However, insignificant differences existed between the rate of nitrogen recommended (80kg N/fed.) and the rate of (biofertilizer + 60kgN/fed.), indicating that biofertilizer could be efficient in reducing costs of the expensive mineral N and reducing environmental pollution. On an average highest values of grain yield/plant were recorded by the promising wheat lines no. 10 (24.57 g), no. 9 (22.50 g), and no. 11 (21.64 g) as compared to the best check cultivar Giza 168. Meantime, this cultivar surpassed the other genotypes in protein and dry gluten percentages. Concerning phenotypic stability, the three superior lines no. 10, 9 and 11 gave the highest mean values (x¯) of grain/plant coupled with significant regression coefficient (bi) values higher than unity and significant deviation from regression (S2di), thus they considered specifically adapted to favourable environments.
Afficher plus [+] Moins [-]CONTENT ANALYSIS OF SHAMS AGRICULTURAL MAGAZINE
2015
Diab, A. M. | Abdel-Ghany M.
This study aimed to conduct content analysis of Shams agricultural magazine, through: 1) analyzing the content of the magazine’s topics in terms of number and area, 2) analyzing the content of magazine’s images in the covers and internal pages in terms of number and area, and 3) measuring magazine’s readability using Flesch’s equations for reading ease and human interest. In order to achieve these objectives, the study performed the content analysis on the magazine issues published in 2014 (12 issues). Frequencies and percentages were used for result presentation. Findings of the study could be summarized as: the most frequent sections was ads, while the least frequent sections were irrigation, soils and the issue file. Regarding the topics, results show that the most frequent topics were fruits, vegetables, ornamentals and field crops within all magazine’s sections except the agricultural mechanization section. Results also showed that citrus topics has ranked first among fruit crops, cabbage among vegetable crops, wheat & corn among field crops, and timber trees among ornamental plants. The results also reported that all of the magazine’s front covers depends on one single image except one issue which depends on a colored area, fruits images ranked first followed by field crops, medicinal and aromatic crops. Regarding the back cover, one half of the issues relied on one image and the other half depends on more than one image or colored area, and the majority of those pictures belongs to vegetables and fruit crops. The most frequent images within the inside pages were in the ads and horticulture sections, while the least frequent images were in the sections of irrigation and soils. With regard to measuring the magazine’s readability, results shows that the overall average sentence length was 40 word/phrase, which goes beyond the proper average for reading ease. With respect to the human interest, results showed that most of issues (January, April, June, August, October, November, and December) located within the medium suspense category according to the degree of human interest. Overall, the magazine’s human interest degree (14.18) made it a medium suspense magazine according to the Flesch’s human interest formula. At the end, the study concludes some recommendations for improving the contents and readability of Shams agricultural magazine.
Afficher plus [+] Moins [-]EFFECT OF NITROGEN SOURCES AND CYSTEINE ON THE PRODUCTIVITY OF SOME WHEAT VARIETIES
2015
Salem, M.S. A. | Darwish I. | Saad El-Dein Harb M. | Abo-Remaila I.
Three experiments for to pot ond one field experiment were carried out at Agric. Res. Station, Fac. Agric., Al-Azhar Univ. Nasr City and El-Aklag region, Kaliobia Governorate, Egypt, during 2011/2012, 2012/2013 and 2013/2014 to investigate the influence of mineral nitrogen fertilizer and biological ones i.e. Cerialen and Biogen under foliar spraying with Cysteine on the productivity of three wheat varieties (Sakha-93. Masry-1 and Banisweif). The studied treatments were recommended dose of N (75 kg N/fed., F1), recommended dose of N. fertilizer + Cysteine at the rate of 150 ppm (F2) 50% recommended dose of N fertilizer + Cerialine + Cysteine (F3) and 50% recommended dose of N fertilizer + biogen + Cysteine (F4). Complete randomized design was applied for the pot experiments, whereas split plot design was conducted for the experimental field. The results revealed that the difference between the investigated varieties due to plant height (cm) and flag leaf area (cm2) was substantial. Sakha-93 var. pronounced its superiority due to the both studied growth characters during the pot and field experiment. F2 treatment located the first order and gave the tallest wheat plants, whereas F4 treatment awarded the largest area of flag leaf, during the three experimental seasons. Yield and yield components parameters (No of grains/spike, 1000-grain weight (g), grain yield (g/plant in pots and ardab/fed. in field), straw yield (g/plant and ton/fed. in field) and biological yield (g/plant in pots and ton/fed. in field ) differed significantly between varieties. the maximum value were obtained from Sakha-93 and Masry-1, while the minimum ones associated with Baniswif variety, through the three experimental seasons. With the exception of straw yield either pot experiments or the field one, F2 and F4 treatments resulted in the heighest data for the previous yield and yield components parameters. The effect for the first order interaction (Var. x Fert.) on the studied characters differed with the characters difference (significant or non-significant) as shown from the obtained results during the three experimental seasons.
Afficher plus [+] Moins [-]AN ECONOMIC STUDY ON THE PRODUCTION AND CONSUMPTION OF DAIRY IN EGYPT
2015
Adam, H.H. A. | Walaa M. Mohammed
Dairy is considered one of the most completed and balanced healthy food needed by human as it contains many important elements and vitamins as well as it protects the body from many diseases. This research aims to identify the current situation of the dairy production and consumption in Egypt in order to know how far is the gap between them. In addition , it studies all factors that affects the production and consumption processes in order to set some recommendations that help in reducing this gap in Egypt. The research refers to the value of dairy production in Egypt that reached about 2.425 billion pounds in 2013, which represent about 8.53% of the agricultural production and 5.24%of the animal production. The annual growth rate for this value during the study period (1995–2013) was about 4.23%.Buffaloes and cows contribute more than 97% of the total dairy production in Egypt, while the goats contribute the remaining. The total dairy production in Egypt reached about 5.554 thousand tons in 2013. This production takes a growing trend with a statistically significance rate of 119.10 thousand tons which represents 4.01%of the annual average of the total dairy production during the period of the research. The research also indicates that there are many factors affecting the quantity produced from dairy in Egypt; the most important of which were the quantity produced from clover, the produced quantity from dry feed, the wholesale price of milk, and the value of loans granted for livestock. The results of the research indicate that there is a proportional effect and statistically significant between each of the quantity produced from clover, the wholesale price of milk ,and the value of loans granted for livestock upon the quantity produced from dairy in Egypt during (1995-2013). The total national consumption of dairy in Egypt was about 6.516 thousand tons in 2013. This consumption takes a growing trend with a statistically significance rate of 156.24 thousands tons which represent 2.68% of the annual average of the quantities consumed during the period of the research. Due to the inability of the local production of dairy in confronting the amount of consumption , a gap between the production and consumption milk has emerged in Egypt estimated at about 962 thousands tons in 2013, which indicates that the self-sufficiency rate did not even exceeded 85.24 % in that year. The research also refers to the factors that affected the quantities consumed of dairy in Egypt which represented in the population, average per capita dairy, average personal income, the average retail price of milk, and the average retail price of eggs . By using the multiple demand function of dairy in Egypt, it was found out that there is a directly relationship and statistically significant between the required quantity and income, while there is an inverse relationship and statistically significant between the required quantity and the retail price of milk. But it did not demonstrate a statistically significant relationship between the required quantity and each of population and the retail price of eggs. The research recommended the following 1- The need for attention to cultivate clover and dry feed as it is one of the most important factor responsible for increasing the dairy production in Egypt. 2- There must be an interest in raising Buffaloes and cows to increase its production as they contribute over 97% from the total dairy production in Egypt. 3- Reducing the marketing costs of dairy as much as possible to raise the marketing efficiency 4- Reducing the interest rates on cash loans that specified for developing livestock in the field of dairy production. 5- Providing veterinary care at suitable prices
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