@article { author = {Ibrahim, M and Abdalla, H and Abdel-Galeil, M and Sh. Refaey, M}, title = {DEVELOPING A COMBINE MACHINE FOR INCREASING SEPARATION EFFICIENCY OF ONION CROP}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {4}, pages = {311-322}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.74207}, abstract = {The experiments were carried out at El-Maamoria village- El-Gamalia region, Dakhlia Governorate during onion harvesting season 2008-2009 to evaluate onion harvesting crop by a combine machine for harvesting and collecting onion cropandachieving the following factors: Decreasing separation losses, increasing soil pulverization and increasing cleaning efficiency of onion crop. All treatments were carried out on onion crop at two different moisture contents (M1=24.5% and M2= 20.5%) and four different of rear angle of ray separator (R1=0, R2=5, R3=10 and R4=15 degree) with different four vibrator speeds (V1=170, V2= 200, V3=230 and V4=260 rpm ).The best results of separation losses and cleaning efficiency were at (M2=20.5%, R1=5 degree, V4=230 rpm).}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_74207.html}, eprint = {https://jssae.journals.ekb.eg/article_74207_4b7a979f70667ad3cc0b93826b43ab3c.pdf} } @article { author = {Matouk, A and El-Kholy, M and El-Sadany, M and Abd El-Aziz, A}, title = {THIN LAYER DRYING OF HAYANI DATE USING A PORTABLE DRYER}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {4}, pages = {323-337}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.74104}, abstract = {A study was carried out to test and evaluate a portable mechanical date dryer using butane – gas as heat energy source. The temperature of drying air was adjusted to be approximately constant during the experiment of period at 40 , 50 , 60 and 70°C and air velocity of 1 ,1.5 and 2 m/s. Two empirical models (Exponential and Page) were examined to describe the drying behaviour of date. The change in date moisture content during the drying process, thermal efficiency of the drying process and the total and reducing sugars of the dried date were also determined. The obtained results showed that, both of the examined models could satisfactory describe the change in date moisture content during the drying process. While the Page's model could predict the change in moisture content of date more adequately than the simple model. The dryer thermal efficiency increased with the increase of drying air temperature and air velocity, and it ranged from 32.23 to 69.84 % for the un-peeled date, from 33.82 to 71.63% for the un-peeled treated date and from 35.42 to 75.13% for the peeled date. Also, the total and reducing sugars percentages decreased with the decrease of drying air temperature and air velocity and the reducing sugar ranged from 44.85 to 51.38 % while the total soluble sugar ranged from 55.95 to 65.14 % .}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_74104.html}, eprint = {https://jssae.journals.ekb.eg/article_74104_7d7f4fe1dcaab43e7e8f2658a3db76da.pdf} } @article { author = {Ebad, Fawzia and Tahoon, Samira and Mohamed, Abeer}, title = {CHANGES IN ENDOGENOUS POLYAMINES AND PROTEIN FRACTIONS IN SALT STRESSED WHEAT PLANT BY PUTRESCINE OR SPERMINE TREATMENTS}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {4}, pages = {339-347}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.74628}, abstract = {A pot experiment was carried out to study the effect of polyamines pretreatments, putrescine (4&8  mM) or spermine ( 6 & 10 mM), on the content of endogenous polyamines  and protein fractions in wheat plants grown under  salinity  stress ( 0.0, 8000 and 10000 ppm NaCl).  NaCl stress produced new protein bands, with molecular masses (mM) of 80, 40 and 16 KD. Also new bands appears in plants grown under putrescine or spermine treatments. The common new bands which appeared with polyamines application were Mm  80,  45,  40,  24,  16 and 14 KD, compared to their control.  Content of putrescine decreased gradually with increasing NaCl level in irrigation water while, spermine and spermidine contents were generally increased under salinity stress.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_74628.html}, eprint = {https://jssae.journals.ekb.eg/article_74628_889bc744d9ac913807b822cfcee9cd75.pdf} } @article { author = {Abdalla, H and Ibrahim, M and Abdel-Galeil, M and Sh. Refaey, M}, title = {DEVELOPING A COMBINE MACHINE FOR HARVESTING AND COLLECTING OF ONION CROP}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {4}, pages = {349-361}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.74189}, abstract = {The experiments were carried out at El-Maamoria village- El-Gamalia region, Dakhlia Governorate during onion harvesting season 2008-2009 to evaluate onion harvesting crop by a combine machine for harvesting and collecting onion cropandachieving the following factors: Decreasing harvesting costs of onion crop, Decreasing a partial and total damage caused in onion bulbs, Decreasing harvesting period and Easing of collecting onion crop. by using a developed combine machine to harvesting and collecting of onion crop. All treatments were carried out on onion crop at four different speed ratios K (ratio of elevator speed to machine forward speed) (K1=1.8, K2= 1.55, K3= 1.05 and K4= 0.8) and four different tilt angle of share (T1=10, T2=15, T3=20 and T4=25 degree) with different four depths of share (D1=4, D2= 5.5, D3=7 and D4=8.5 cm ).The best results of harvesting efficiency, damage ratio and fuel consumption were at (K3= 1.05, T4=25 degree, D3= 7 cm).}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_74189.html}, eprint = {https://jssae.journals.ekb.eg/article_74189_9b50bce9fb533dc3f09775e41ba90498.pdf} } @article { author = {Abdellatif, S and Yousef, A and Mosad, Ghada}, title = {UTILISATION OF SOLAR TUNNEL GREENHOUSE AS A SOLAR DRIER FOR DRYING SEEDLES GRAPES: I: THERMAL PERFORMANCE ANALYSIS OF SOLAR DRIER}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {4}, pages = {363-377}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.74136}, abstract = {In this research work an attempt has been made to analyse the thermal performance of solar tunnel greenhouse which can be utilised as a solar drier for seedless grapes. Three identical solar tunnel greenhouse driers (STGD) were used under the climatic conditions of El-Mansoura city, Egypt (latitude and longitude angles of 31.05ºN and 31.37 ºE, respectively), during August 2009. The thermal performance analysis of the solar driers (active or dynamic drier) based on the energy balance equations was evaluated. The three active solar driers were operated under three different mass flow rates of 0.122, 0.183, and 0.259 kg/s. The obtained results revealed that, the daily average solar energy available outside the solar driers was 16.727 kWh of which 12.572 kWh was available inside the drier with an average effective transmittance of 75.16%. The daily average solar energy available inside the three solar tunnel greenhouse driers during the experimental period was 12.572 kWh of which 6.993, 7.699, and 6.687 kWh, respectively, converted into useful heat gain. These solar energy available inside the three solar driers resulting in increase the inside air temperatures above the outside (31.6°C) by 21.9, 12.5, and 9.4°C, and reduce the air relative humidity under the outside (40.6%) by 9.0%, 3.1%, and 5.1%, respectively. The daily average overall thermal efficiencies of the three solar tunnel greenhouse driers during the experimental period were 55.62%, 61.24%, and 53.19%, consequently, 44.38%, 38.76%, and 46.81% of the solar energy available inside the solar driers was lost, respectively. The predicted heat energy for the three solar driers was validated well with that measured during the experimental period by 0.995, 0.991, and 0.998, respectively, which gave an excellent agreement.   }, keywords = {solar tunnel greenhouse drier,thermal performance analysis}, url = {https://jssae.journals.ekb.eg/article_74136.html}, eprint = {https://jssae.journals.ekb.eg/article_74136_ad313a77db1631eabc0f045bdc0cbc7d.pdf} } @article { author = {El-Hanfy, E.}, title = {THE HAND PEDAL TYPE WITH RECIPROCATING SHELLER PLATE TO SHELL CORN}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {4}, pages = {379-393}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.74629}, abstract = {The aim of present paper is to construct, design and evaluate corn sheller to achieve shelled kernels with highest efficiency and lowest damage in proper time. Those, the reciprocating shelling plate is investigated to reduce the kernel movement in varies direction inside the prototype consequentially decrease the kernels damage. The experimental prototype consists of the main frame consists of three similar cub units (holding device), shelling plate and the inversion of slider crank chain mechanism regulated with four different crank radii (4.5; 6.5; 8.5; 10.5 cm). The un-depended variables were different levels of reciprocating cycles, three levels for each of shelling teeth number, clearance and reciprocating shelling plate times at different crank radii. The shelling plate speed (m/s) was recorded relative to the angular speed of connecting shelling plate with the end point of crank radius. All experiments were carried out under constant kernel and cob ear moisture content "MC" of 10.8% and 10.32 "wb" respectively. The study gives the indicator to judge and deduce that the best factors which gives the highest shelling efficiency (98.8%) and the highest productivity (78.392 kg/h) were 100 number of shelling teeth, 25mm clearance, 105cm crank radius and 65.4cycle/min  shelling plate reciprocating. On the other hand, the external and internal cracks of the shelled corn are low percentage.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_74629.html}, eprint = {https://jssae.journals.ekb.eg/article_74629_da84f72be2bb6b9420e48561fc0a4d86.pdf} } @article { author = {El-Atawy, Gh}, title = {POTENTIAL PRODUCTIVITY OF CUCUMBER AS AFFECTED BY IRRIGATION WATER AMOUNTS AND NITROGEN FERTILIZATION UNDER DRIP IRRIGATION AT NORTHWEST DELTA, EGYPT}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {4}, pages = {395-405}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.74172}, abstract = {Two field experiments with cucumber (Cucumis Sativus L.; var. Prince) were carried out during 2007 and 2008 growing seasons on sandy loam soil, at Wady Elnatroon, El-Behera governorate in Northwest Delta to investigate the most suitable irrigation water amount and nitrogen rates for cucumber grown under drip irrigation method. The treatments were arranged in a split plot design with four replicates. Four amounts of irrigation water were daily applied on a base of 100%, 90%, 80% and 70% of ETc with four nitrogen rates i.e. control, 50, 100 and 150 kg N fed-1. Chief results indicated that cucumber yield were 18.357, 17.474, 14.660 and 12.820 ton fed.-1 with irrigation water quantities 100%, 90%, 80% and 70% of ETc, respectively. Irrigation with 100% of ETc and fertilized with 150 kg N produced the highest fruit yield (23.221 ton fed-1.), while, the lowest fruit yield (8.003 ton fed-1.), obtained from control treatment which irrigated with 70% of ETc. The highest value of nitrogen use efficiency (147.54 kg fruits kg-1 applied N) was obtained under treatments of 100% of ETc with 50 kg N fed.-1. While, the lowest value (9.30 kg fruits kg-1 applied N) was obtained from 70% of ETc with 150 kg N fed.-1. Amounts of irrigation water applied were 50.00, 45.24, 40.48 and 35.71 cm for 100%, 90%, 80% and 70% of ETc, respectively. Seasonal water consumption of cucumber was 44.54, 40.16, 35.96 and 32.08 cm for irrigation treatments irrigated with 100%, 90%, 80% and 70% of ETc, respectively. Irrigation with 90% of ETc enhanced crop growth and field water use efficiency of cucumber plants as compared to other treatments. It could be concluded for obtaining a good cucumber yield and facing the irrigation water shortage, daily irrigation with 90% of ETc must be added with 150 kg N fed-1.  }, keywords = {Cucumber,Drip irrigation,N fertilization,water consumptive use,water use efficiency}, url = {https://jssae.journals.ekb.eg/article_74172.html}, eprint = {https://jssae.journals.ekb.eg/article_74172_0415610b305c33c66fc86320a32175c3.pdf} } @article { author = {Sonbol, H and El-Hadidi, E and Said, M and Abo El- Soud, H}, title = {EFFECT OF DIFFERENT SURFACE AND DRIP IRRIGATION SYSTEMS ON SUGAR BEET YIELD, IRRIGATION PERFORMANCES AND SOIL SALINITY AT NORTH DELTA.}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {1}, number = {4}, pages = {407-420}, year = {2010}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2010.74127}, abstract = {A surface drip irrigation(single lateral, SSDI ,or double laterals/plant row, DSDI))  , subsurface drip irrigation (single lateral, SSSDI ,or double laterals/plant row, DSSDI),gated pipes (GP) and traditional surface irrigation(TSI) were applied with sugar beet(variety Raspoly) during the winter season 2007/2008 at Sakha Agricultural Research Station Farm , Kafr El-Sheikh Governorate, Egypt in order to study the effect of these irrigation systems on sugar beet yield , its quality, irrigation performances and soil salinity. Both drip irrigation systems included 16 mm diameter drip-lines, with emitters discharging about 2L/h and spacing 0.5 m. The subsurface drip irrigation system was installed before the crop seeding, where its laterals (16 mm drip-lines) were buried 0.6 m apart at 15cm below soil surface so that they are not affected by the cultivation practices during the current growing season . The aluminum gated pipes (150 mm diameter) were located at the head of the irrigated field and connected directly with the irrigation pump. The design of this experiment was randomized complete blocks(RCB) with six replicates. The following findings could be summarized as follows: The highest root, sugar yield, sucrose percentage and quality of juice were produced when sugar beet plants were irrigated by gated pipes. While the lowest root and sugar yield were achieved with irrigation by double line of subsurface drip irrigation. The highest content of K % was obtained when sugar beet plants received the lowest amount of irrigation water. While, the lowest one was recorded with plants received the highest amount of irrigation water. Na % and amino N % in Juice: The different irrigation systems had insignificant effect on Na and amino N % in Juice. Water applied was obviously affected by irrigation systems . The DSSDI system was more effective since it received the lowest   amount of irrigation water (2074.8 m3/fed) followed by SSSDI (2230.2 m3/fed) DSSDI system (2255.4 m3/fed). On the other hand, TSI system received the highest amount of irrigation water (3150 m3/fed) followed by GP system (2692.2 m3/fed) The highest values of field water use efficiency are obtained with SSSDI or DSSDI ,respectively. While, the lowest value is given by TSI system. Also, the highest values of crop water use efficiency are achieved with SSSDI, GP and DSSDI system. The lowest values of crop water use efficiency for root are recorded with SSDI, DSDI and TSI system. The irrigation by GP and SSDI systems achieved the highest values of water distribution efficiency. While, subsurface drip irrigation system (single or double laterals) recorded the lowest distribution efficiency. On the other hand, surface drip irrigation system achieved the highest values of distribution uniformity with single or double laterals/plant row respectively. While, the lowest distribution uniformity value is recorded with single subsurface drip laterals.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_74127.html}, eprint = {https://jssae.journals.ekb.eg/article_74127_b28d8c7bebf44ee89c84d96207310496.pdf} }