@article { author = {Moussa, A. I. M. and Bahnasy, A. M. F. and Ahmed, Sh. M.}, title = {JATROPHA OIL ESTER AND ITS EFFECT ON DIESEL ENGINE PERFORMANCE}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {2}, number = {10}, pages = {1035-1047}, year = {2011}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2011.56052}, abstract = {Diesel engine 26.12 kW was used to test Jatropha biodiesel and its blends. A pilot plant was designed and built for biodiesel production from different vegetable oils and used for this study. Five biodiesel ratio were tested and compared with  diesel fuel. The engine performance was tested under different loads (10, 12.5 and 17.5 kW). The percent of specific fuel consumption increased from 2 to 20 % for B0 to B100 fuels. The brake thermal efficiency for biodiesel and its blends was found to be slightly higher than that of diesel fuel at tested load conditions. The exhaust gas temperature increased with increase in load and amount of diesel. The highest exhaust gas temperature was observed as 370 ºC for B100 among the three load conditions. The diesel gas exhaust temperature was observed as 420 ºC at the highest load. The CO2 emission was higher than biodiesel fuel B100 by about 11.5% at the highest load. The carbon monoxide reduction by biodiesel was 14, 21 and 12 percent at 10, 12.5 and 17.5 kW load conditions respectively. The NOx emissions from biodiesel was increased by 15, 16 and 17 percent higher than that of the diesel at 10, 12.5 and 17.5 kW load conditions respectively.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_56052.html}, eprint = {https://jssae.journals.ekb.eg/article_56052_a600bcae4bf621f51beac62e2b1e0e39.pdf} } @article { author = {El-Nemr, M. K. M.}, title = {INCREASING WATER AND ENERGY UNIT PRODUCTIVITY OF DRIP IRRIGATION SYSTEM WITH RICE STRAW MULCHING.}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {2}, number = {10}, pages = {1049-1057}, year = {2011}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2011.56053}, abstract = {In this study under clay soil conditions during two seasons 2008 and 2009, built in emitter type was used to irrigate pepper crop with 96h irrigation interval. In order to increase the benefits of water and energy units using water depletion strategy, three amounts of applied water 80, 90, and 100% of gross irrigation requirements (IRg) were studied with two different soil coverage cases, 1-rice straw mulching(RM) 2- normal (NM) conditions. Rice straw mulching with abundance (500g/m2) was used to decrease the effect of water depletion on pepper crop productivity. In general, increasing the amount of applied water led to increase crop productivity. The results showed that rice straw mulching led to increase the pepper crop productivity with all the amounts of applied water. The treatment (RM80) gave the maximum water use efficiency while the maximum water use efficiency under normal conditions was at (NM90) treatment. The two former treatments gave also the maximum productivity of energy unit. The study recommended using rice straw mulching if compared to normal conditions in order to increase crop productivity in addition to the increase of water and energy units’ productivity. Using 80% of IRg with rice straw mulching and 90% of IRg will give the maximum water use efficiency and energy use efficiency at the two cases under experimental conditions.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_56053.html}, eprint = {https://jssae.journals.ekb.eg/article_56053_e2b5e7307ca8685893936882b341993f.pdf} } @article { author = {Mahmoud, M. M.}, title = {MANURE TEA AND AMINO ACIDS AS POTENTIAL ECONOMIC AND SAFE SUBSTITUTES FOR MINERAL AND ORGANIC FERTILIZATION AND THE EFFECT ON GROWTH, YIELD AND CHEMICAL COMPOSITION OF FABA BEAN PLANTS.}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {2}, number = {10}, pages = {1059-1073}, year = {2011}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2011.56054}, abstract = {A field experiment was conducted on a calcareous soil at Abou massoud village (48 km south-west to Alexandria) to study the possibility of partial substitution of NPK fertilizer and/or chicken manure by foliar spray of manure tea or amino acids and their effect on soil organic matter and available macronutrients in soil as well as vegetative characters, photosynthetic pigments, macronutrients and protein content and  faba bean yield and its components. Treatments included mineral fertilizers (MF) at the rate of 35, 65 and 100 % of the recommended dose of N, P and K (RDF) and chicken manure (CM) at the rate of 1 ton/fed (CM1) and 2 ton/fed (CM2) along with foliar spray by manure tea or amino acids (1000 mg/l). Results indicated that soil organic matter content significantly increased due to the application of the two rates of chicken manure. Available N, P and K in soil showed pronounced increase upon the application of MF and/or CM with a superiority for the treatment of 100 % RDF + CM2 over the other treatments. Vegetative growth characters, photosynthetic pigments, N, P, K and protein content in seeds as well as seed yield and yield components progressively increased with increasing the applied rates of MF and/or CM up to 100 % RDF and CM2 and the increase was more prominent under the mixture application of both types of fertilizers. Moreover, all the aforementioned parameters were highly significantly enhanced with the foliar spray of manure tea or amino acids.  Treatments fertilized with MF and CM and sprayed with manure tea or amino acids simultaneously gave additional promoting effects on the above mentioned parameters compared to the treatments receiving the sole or mixture application of MF and CM. In spite of the treatment of full dose of NPK along with CM1 + manure tea or amino acids produced the highest faba bean yield (1350 kg/fed), the yield obtained by the treatment of 65 % NPK with manure tea (1164 kg/fed) or amino acids (1172 kg/fed) was higher than the yield recorded by the single application of 100 % RDF (1110 kg/fed), indication that the need for NPK fertilizers could be reduced to 65 % compared to 100% RDF and saving 35 % NPK fertilizers.      }, keywords = {Amino acids,chicken manure,Faba bean,manure tea,NPK fertilizers}, url = {https://jssae.journals.ekb.eg/article_56054.html}, eprint = {https://jssae.journals.ekb.eg/article_56054_281d1cd50c7bcb6fd7b4bc2b5b26da43.pdf} }