@article { author = {Elsokkary, I. and Mourad, A. and Abdelhady, A. and Abdallah, E.}, title = {RESPONSE OF PEA (Pisum sativum L.) PLANT GROWN IN SAND CULTURE UNDER SALINITY STRESS TO FOLIAR APPLICATION BY KINETIN AND GIBBERELLIC ACID.}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {11}, pages = {1075-1087}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.75821}, abstract = {Pot experiment was carried out at Faculty of Agriculture, El Bostan, Alexandria University in order to estimate the response of pea plant (Pisum sativum L., variety Master B) grown in sand culture under salinity stress to foliar application by kinetin or gibberillic Acid (GA3).        Seeds of pea were sown in plastic pot of 20 cm diameter and 30 cm depth containing 10 kg prewashed sand. The water of irrigation consisted from base nutrient solution of Hoagland containing 0, 25, 50 and 100 mM NaCl. After three weeks from sowing, the plants were foliar sprayed by 0 , 25 and 50 mg. kinetin l-1 or by 0 , 50 and 100mg. GA3l-1. Samples of plants were collected after 38 and 88 days from sowing.          The obtained results showed significant decrease of the growth characters of 38 days old plant with increasing salinity. At 100 mM NaCl treatment, the relative decrease of shoot F.W. was 59.0% and that of root was 71.7%. There were also significant decreases of Chl b, and carotenoids and significant increase of proline contents with increasing salinity.         There were no significant stimulating effects due to foliar application by kinetin on all growth characters, Chl a, Chl b and proline contents. However, foliar application by GA3 improved growth characters, at each salinity level, of 38 days old plants. However, there were significant reductions in grains F.W. of 88 days old plant with foliar application of GA3 at each level of salinity treatment.}, keywords = {Pea plant,Relative growth rate (RGR),kinetin,Gibberellic acid (GA3),salinity stress}, url = {https://jssae.journals.ekb.eg/article_75821.html}, eprint = {https://jssae.journals.ekb.eg/article_75821_3bf0adc0067437fc4bd79a11d56c76f0.pdf} } @article { author = {Saied, M. and El- Sanat, G. and Zamil, B. and Shams El-Dein, H.}, title = {EFFECT OF CULTIVATION MEDIA, IRRIGATION WATER SOURCES AND ORGANIC MANURE ON SOME WATER RELATIONS AND SOIL SALINITY UNDER PROTECTED GREENHOUSES}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {11}, pages = {1089-1100}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.75820}, abstract = {  This investigation was conducted in plastic greenhouses at Sakha Agricultural Research Station to study the effect of cultivation media, irrigation water sources and organic manure levels on some water relations, soil salinity and total income under protected greenhouses condition .Split-split plot design with four replicates was used. The obtained results could be summarized as follows: 1-   The highest amount of water applied to cucumber and tomato crops were recorded with rice straw bales irrigated by fresh water, while the lowest values were recorded with clay soil irrigated by well water. 2-   The highest irrigation water and water use efficiencies were achieved with rice straw bales for cucumber or clay soil for tomato as cultivation media, which irrigated by fresh water and treated with the rate of 20 tons/fed organic manure. 3-   Salinity levels were increased after harvesting of cucumber in the 1 st season with the all treatments especially that irrigated by well water and treated by high rates of organic manure under clay soil. On contrary, salinity levels were decreased with all treatments at the end of the second season (tomato) ,especially with rice straw bales treated by low rates of organic manure and irrigated by fresh water.  4-   The total incomes that obtained from cucumber and tomato grown in clay soil irrigated by fresh water and treated by high rates of organic manure were higher than those obtained with rice straw bales irrigated by low quality water without application of organic manure. }, keywords = {}, url = {https://jssae.journals.ekb.eg/article_75820.html}, eprint = {https://jssae.journals.ekb.eg/article_75820_8e6e9a30b463393b92f550be8e2d14cd.pdf} } @article { author = {Al-Issa, A.}, title = {EFFECT OF SALT STRESS ON SOME FREE LIVING NITROGEN FIXING BACTERIA IN THE SOIL (1)}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {11}, pages = {1101-1115}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.75826}, abstract = {هدف البحث إلى دراسة تأثير الإجهاد الملحي في حوض الفرات في الجمهورية العربية السورية, على بعض الأجناس البکتيرية المثبته للنتروجين الجوي بالشکل الحر, وعزل المتحمل منها للملوحة بغية استخدامه کلقاحات ميکروبية, من أجل ذلک تم أخذ عينات من الترب متزايدة في قيمة درجة التوصيل الکهربي (الناقلية الکهربائية), dS/ m) ):  3.34- 6.01 – 9.48 – 11.66- 16.35- 21.8 – 50.8 – 126.7. بينت النتائج:-  إنخفاض أعداد البکتيريا غير ذاتية التغذية, والفطريات, والأعداد الکلية المثبته للنتروجين الجوي ابتداءً من درجة الملوحة 6.01 dS/m. ولم تتأثر أعداد Azotobacterبازدياد درجة ملوحة التربة من 9.48 dS/m إلى 21.8 dS/m. غير أنه لم يسجل وجود Azotobacter و Clostridium في الترب ذات درجة الملوحة dS/m 126.7 و50.8, في حين کان هناک وجود Azospirillum. تأثرت أعدادPaenibacillus polymyxaسلباً ابتداءً من درجة ملوحة التربة 6.01 dS/m . تم تنقية عزلات منAzotobacter وAzospirillum من ترب متملحة من حوض الفرات, لقحت فيها حبوب القمح التي زرعت في تجربة أصص, رويت بمحاليل ملحية متزايدة من کلوريد الصوديوم dS/ m)) : 0.00- 0.78 – 2.34 – 4.21 – 6.25 – 9.37, لدراسة تأثيرهذه العزلات في النشاط البيولوجي للتربة, ومعرفة مدى تأقلمها ونشاطها في ظروف الإجهاد الملحي, ومقارنة ذلک مع معاملات رويت بنفس التراکيزات لکنها غير ملقحة. بينت النتائج بأن التلقيح بـ  Azotobacter وAzospirillum أدى إلى زيادة أعداد البکتيريا غير ذاتية التغذية, والأعداد الکلية للبکتيريا المثبته للنتروجين الجوي بصورة حرة بالمقارنة مع المعاملات غير الملقحة. زاد أعداد Clostridium في ترب المعاملات غير الملقحة. أظهرت النتائج أن عزلات Azotobacter وAzospirillum المأخوذة من ترب حوض الفرات في سورية لها القدرة على التأقلم مع ظروف ري التربة بمياه مالحة, ولها القدرة أيضاً على استعمار جذور نبات القمح بکثافة عددية کبيرة, وهي عزلات مبشرة وواعدة, يمکن استخدامها هذه المرکبات کسماد حيوي في ظروف الإجهاد الملحي, ويتطلب الأمر مزيداً من الدراسة والتجريب التطبيقي تحت ظروف الحقل, وفي بيئات بيومناخية مختلفة.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_75826.html}, eprint = {https://jssae.journals.ekb.eg/article_75826_dffa3c63bf23adcb123907ebffcc3411.pdf} } @article { author = {Abdellatif, S. and Mohamed, Y.}, title = {DEVELOPING A SOLAR HEATING SYSTEM FOR HEATING SWEET COLOUR PEPPER GREENHOUSE}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {11}, pages = {1117-1129}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.75824}, abstract = {The objective of the present study was to evaluate the effect of solar heating system on the microclimatic conditions of sweet colour pepper greenhouse during winter season of 2009-2010. The use of solar energy system for greenhouse heating in winter and cold days helps to save fossil fuels and conserve green farm environment on the one hand, and on the other, enhances the quality of greenhouse products, reduces production costs and limits the release of greenhouse gases. Temperatures of inside and outside air, solar radiation flux incident, and air relative humidity of inside and outside for the last five years at nighttimes have been collected and used to calculate the total heat losses from the greenhouse. Using this data the solar collector area and collector configuration were calculated so that the optimal surface area of solar collectors was found to be 4 m2 that adequate to heat the sweet colour pepper crop greenhouse. The thermal performance analysis was experimentally determined, by measuring the temperature increase at various water inlet temperatures and intensity of solar radiation, under clear sky conditions. A complete solar heating system (two solar collectors and storage tank) was utilised for heating 300 litres of water. The daily average overall thermal efficiencies of the solar collector and the storage system during the experimental period were 71.3% and 91.3%, respectively. Over a 181 days season the solar heating system collected 3813 kWh of energy or 70.5% of the total heat energy required to heat the greenhouse (27.234 kWh). This percentage could be increased by reducing heat losses from the greenhouse. Due to the microclimatic conditions of the greenhouse were at or around the desired level, the sweet colour pepper had have optimal vegetative growth rate, stem length, number of fruits being seated, and fresh yield.  The total costs per square meter of greenhouse were L.E. 56.1.The fresh yield of sweet colour pepper was 5.931 kg/m2, which sold by L.E. 80.1, consequently, the estimated return on capital was 42.8% per annum.       }, keywords = {}, url = {https://jssae.journals.ekb.eg/article_75824.html}, eprint = {https://jssae.journals.ekb.eg/article_75824_e0b3d92fa7d73791241719b20d5e8021.pdf} } @article { author = {Antoun, Linda and Zakaria, Sahar and Rafla, Hanaa}, title = {INFLUENCE OF COMPOST, N-MINERAL AND HUMIC ACID ON YIELD AND CHMICAL COMPOSITION OF WHEAT PLANTS}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {11}, pages = {1131-1143}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.75819}, abstract = {Two field experiments were carried out at the experimental farm of El-Ismailia Agric. Research station, during two successive winter seasons of 2007/2008- 2008/2009 to study the effect of different levels of nitrogen fertilizers 0,25, 50, 75 and 100kg N/fed. from recommended dose (100kg/fed) with or without composted rice straw and / or humic acid on yield, yield components, chemical composition of wheat plant and its attributes as well as NPK uptake of wheat grain and straw, and protein content. A three way randomize complete block (Factorial) design with three replicates was used. The obtained results could be summarized as follow;- 1- Raising mineral nitrogen fertilizer level from 25 to 50, 75 and 100 kg N/fed resulted in significant increases in plant height, spike length, grain and straw yields/fed and protein content of grain and straw. Also, NPK uptake of grain and straw were significantly increased. 2- The wheat grain and straw yields as well as their NPK contents and grain protein were significantly increased by application of compost and humic acid treatments. 3- Raising the nitrogen rate along with compost application increased the quantity and quality of wheat yield. 4- Addition of humic acid markedly increased plant height, spike length, 1000-grain weight, grain and straw yield/fed., protein content of grain, NPK uptake of both grain and straw. 5- The interaction between compost, mineral nitrogen level and humic acid had significant effects on grain yield/fed. and N,P and K uptake of straw and 1000-grain weight. 6- The highest values for yield and its components were obtained by humic acid, under the highest level of nitrogen fertilizer and compost treatment. Therefore, it could be concluded that the application of compost+ 100 kg N/fed + humic acid was the most compatible and economical, since it has the highest wheat yield.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_75819.html}, eprint = {https://jssae.journals.ekb.eg/article_75819_fd999b44a1476a86f801ffe0608eba3d.pdf} }