@article { author = {Abou Kota, M. and Helal, Rania}, title = {STUDY OF CORRELATION BETWEEN SOIL SALINITY AND SOIL CHEMICAL PROPERTIES IN THE NORTHERN NILE DELTA.}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {10}, pages = {1185-1199}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.43794}, abstract = {According, salts in the studied soil profiles so, to conclude correlation between soil parameters and EC, where, salts affected on EC. The results revealed high significant relationship between EC and Ca2+, Mg2+, Na+, Cl- and SO42-. Moreover, data initiate relation between EC and ESP and CaCO3and relationship between EC and CEC whereas, show simple correlation. According, to results, regression relation between EC and available Fe and Zn shows simple correlation.}, keywords = {Soil salinity,soluble cations and anions,ESP,CaCO3,CEC,available Fe,available Zn,Linear Regression}, url = {https://jssae.journals.ekb.eg/article_43794.html}, eprint = {https://jssae.journals.ekb.eg/article_43794_06d941463970f2be96b1e46c3a258306.pdf} } @article { author = {El-Sirafy, Z. and El-Ghamry, A. and El-Shazly, M. and Sakara, Hanaa}, title = {BIO-CHEMICAL PARAMETERS OF SPINACH PLANT AS AFFECTED BY THE INTERACTION AMONG N-FORMS, Ca AND Se APPLICATION}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {10}, pages = {1201-1215}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.43795}, abstract = {In order to study the objectives of this investigation; two pot experiments were conducted under green house conditions in The Faculty of Agric. Mansoura Univ. the experiment were conducted during the seasons of 2012-2013 and 2013-2014 to study the interaction effect among N-forms, Ca and Se application on some bio-chemical parameters of spinach plant. Thirty treatments were arranged in complete randomized block design with three replicates, which were the simple possible combination between two treatments of calcium (0 and 100 mg.L-1), the three treatments of N-forms (ammonium sulphate, urea, and ammonium nitrate) at 60 kg N/fed. and the five levels of sodium selenite (0, 5, 10, 15 and 20 mg.L-1). N-forms were added as soil addition, while calcium and sodium selenite levels were foliarly applied. The results showed that; foliar application of sodium selenite at the lowest rates of 5 and 10 mg.L-1 combined with N-forms under study in the presence of calcium applied by foliar way significantly increased the average values of chlorophyll, fresh weight, and soluble and insoluble oxalate concentrations in spinach leaves as compared to the untreated plants. More addition of sodium selenite at the highest rates of 15 and 20 mg.L-1 under the same conditions of N-forms and calcium applications significantly reduced the average values of all the previously mentioned traits.    Also, the results, indicated that the mean values of total phenolic compounds, Se accumulation as well as the activity of nitrate reductase enzyme were significantly increased with the level of sodium selenite was increasing. Such effect was realized under all the forms of N-fertilizers in the presence and absence of calcium addition. An adverse effect happened for the values of nitrate and nitrite accumulation in the leaves of spinach plant. It deacresed sharply and significantly as the level of Na2SO3 increased under all the investigated treatments.}, keywords = {N-forms,calcium,Sodium selenite,bio-chemical parameters and spinach plant}, url = {https://jssae.journals.ekb.eg/article_43795.html}, eprint = {https://jssae.journals.ekb.eg/article_43795_2bb37c67e8a4bc9f6183910226eab029.pdf} } @article { author = {Abdellatif, S. and El-Hadidi, Y. and Mohammed, Eman}, title = {THERMAL PERFORMANCE ANALYSIS FOR SOLAR COLLECTOR AIR HEATER ASSISTED SOLAR MODIFIED-QUONSET DRYER}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {10}, pages = {1217-1236}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.43796}, abstract = {This paper presents an experimental analysis to study and test the thermal performance of a novel mixed mode solar dryer (modified-quonset form) with solar collector air heater that could be used to dry seedless grape. The solar dryer consists of a flat-plate solar collector and a solar dryer. The thermal performance analysis tests were carried out on the roof of Agricultural Engineering Department (latitude angle of 31.045ºN, longitude angle of 31.37ºE, and altitude of 14.5 m above the sea level) during summer season of 2015 (from 29/8/2015 to 3/9/2015). The thermal performance analysis of the mixed mode solar dryer (forced convection system) based on the energy balance equations was evaluated. The solar dryer with forced convection was operated under mass flow rate of 0.1172 kg/s (6.58 m3/min). The obtained data showed that, the daily average solar radiation recorded on the horizontal surface during the experimental period was 5.607 kWh/m2 whilst, the actual solar radiation recorded on the tilted surface of flat-plate solar collector was 8.109 kWh/m2. Consequently, the stationary non-tracking flat-plate solar collector increased the actual received solar radiation during that period by 44.62%. The daily averages solar radiation recorded outside and inside the solar dryer, respectively, were 5.607 and 4.570 kWh/m2 with cover effective transmittance of 81.51%. The daily averages solar energy available inside the flat-plate solar collector and the solar dryer were 16.217 and 9.141 kWh of which 10.895 and 5.514 kWh, respectively, converted into useful heat gain. These solar energy available inside the flat-plate solar collector and the solar dryer resulting in increasing the indoor air temperatures above the outdoor (31.1°C) by 10.5, and 16.1°C, and reduce the air relative humidity under the outside (60.8%) by 28.3%. The daily average overall thermal efficiencies of the flat-plate solar collector and the solar tunnel dryer during the drying period were 66.64% and 59.52%, consequently, 33.36% and 40.48% of the solar energy available were lost, respectively.}, keywords = {flat-plate solar collector, solar dryer, modified quonset form,thermal performance analysis tests}, url = {https://jssae.journals.ekb.eg/article_43796.html}, eprint = {https://jssae.journals.ekb.eg/article_43796_54e1757bd3649d393b1677421dc905f1.pdf} } @article { author = {Hendawy, Y. and El-Keway, A. and Khater, A.}, title = {EFFECT OF RICE BRAN PELLETING AND PELLETS CHARACTERISTICS ON THE EFFICIENCY OF OIL EXTRACTION}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {10}, pages = {1237-1247}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.43786}, abstract = {A study was carried out to  test and evaluate the effect ofrice bran pelleting using a single face extruder on the extraction efficiency of rice bran oil. Four different various screw speeds 30, 50, 70, and 90 rpm, three different die hole diameters 6, 8 and 10 mm and four different various  pelliting lengths 1, 2, 3 and 4 cm were examined and evaluated. The results show that, moisture content of pellets decreased at all levels of screw speed and die hole diameter. At screw speed of 30 rpm the moisture content decreased from an initial moisture content of 11.9 % (w.b.)  to 6.22, 6.43 and 6.71 % (w.b.) with die hole diameters of 6, 8 and 10 mm, respectively. At all levels of screw speed and die hole diameter the bulk density of pellets ( 0.29 g/cm3 ) increased  by one and half times of raw bran bulk density  and ranged from 0.43 to 0.59 g/cm3. Penetration rate increased by increasing pellets length and diameter and ranged from 37.44 to 38.96 cm/min. Oil retention ratio decreased by increasing pellets length, while increasing pellets diameter tended  to increase oil retention ratio. Residual oil % increased with increasing length and diameter of pellets. Oil extraction efficiency decreased with increasing pellets length and diameter and it was  ranged from 84.6% at 4 cm length and 10 mm diameter of pellets to 95.5% at 1 cm length and 6 mm diameter of pellets.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_43786.html}, eprint = {https://jssae.journals.ekb.eg/article_43786_cb4f393c5481714a279aed19b2ac1eec.pdf} } @article { author = {Abo-Habaga, M. and Yehia, I. and Abo-Elasaad, G.}, title = {DEVELOPMENT OF A RICE STRAW BALES CHOPPER}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {10}, pages = {1249-1262}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.43798}, abstract = {The present research work was carried out in RiceMechanizationCenter at Meet El Deeba, Kafr El-Sheikh Governorate to develop and evaluate the performance of a rice-straw bales chopper. The field experiments were conducted to determine the suitable operation parameters to reach the straw lengths suitable for the manufacture of animal feed and compost. The results indicated that , the optimum operation parameters were cutting-knives speed of 1260 rpm (26.4 m/s), platform tilt-angle of 20 degree, 24 cutting knives and claws (or cutting-knives) spacing of 6 cm, which gave the average cutting-length of rice straw about 5.19 cm, cutting-length percentage of rice straw < 8 cm around 74.54 %, machine productivity of 892 kg/h, power requirement about 5.05 kW and specific energy of 5.67 kW.h/t., the operation and production costs according to prices of year 2015 were 13.63 L.E./h and 15.27 L.E./ton, respectively .}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_43798.html}, eprint = {https://jssae.journals.ekb.eg/article_43798_7aa89c5bf6b2f4c76febaf1e82f74daf.pdf} } @article { author = {Fouda, Sara and Hassen, Amira and Attia, Manal}, title = {RESPONSE OF FABA BEAN (Vicia faba L.) PLANTS TO DIFFERENT SOURCES AND RATES OF NITROGEN FERILIZATION IN NEWLY RECLAMED SOILS}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {10}, pages = {1263-1280}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.43797}, abstract = {Effects of application of different nitrogen  sources  i.e., ammonium nitrate (AN)  with different rates of nitrogen ( 0, 20, 30 and 40 kg N fed.-1 ) and anhydrous ammonia (AA) as well as biofertilizer (Rhizobium radiobacter sp.) as PGPR strain either alone or  in a combination with AN rates on faba bean (Vicia faba L., cv. Nubaria 1) were studied on a loamy sand soil at the Experimental Farm of Ismailia Agriculture Research Station, Egypt during the two successive winter seasons of 2013/2014 and 2014/2015. The results could be summarized as follow: Inoculation with (Rhizobium radiobacter sp.) + 40 kg N fed.-1 as ammonium nitrate led to highest  increases for number of pod plant-1, seed yield, pod yield and seed Mn content  , inoculation with (Rhizobium radiobacter sp.) + 30 kg N fed.-1 as ammonium nitrate led to increase for  P and K contents in seeds.  Similar increments for 100-seed weight, protein content along with N, Fe and Zn contents of grain were recorded with anhydrous ammonia at rate of 40 kg N fed.-1 as ammonium nitrate. The uptake  of macro and micronutrients significantly increased in combined treatment of (bio+N40) . In soil after harvest, inoculation with (Rhizobium radiobacter sp.) + 40 kg N fed.-1 as ammonium nitrate led to highest decreases of both soil pH and EC but increases of available P, K, Fe and Zn contents.  The highest values of available N was recorded due to inoculation with (Rhizobium radiobacter sp.) + 30 kg N fed.-1 as ammonium nitrate , available Mn  increased with anhydrous ammonia at the  rate of 40 kg N fed.-1 as ammonium nitrate.  }, keywords = {ammonium nitrate,anhydrous ammonia,Faba bean,loamy sand soil Rhizobium radiobacter sp}, url = {https://jssae.journals.ekb.eg/article_43797.html}, eprint = {https://jssae.journals.ekb.eg/article_43797_e5e3641b612e454860b2b2f24ba2da75.pdf} }