ORIGINAL_ARTICLE
PHYSIOCHEMICAL, MINERALOGICAL AND MORPHOLOGICAL STUDIES OF COASTAL SOILS NORTH -WEST OF EGYPT.
The northwestern coast is located in the western desert of Egypt. The whole region is under hot arid conditions. Four landforms were identified and soils the area is sufficient for initiated cultivation of figs and the associated industrial and economic activities. Abundant runoff, and water shed practices the lands are promising for agricultural expansion. Sixteen soil profiles representing the four landforms of coastal plain, windblown formation, piedmont like plains and plateau formation were taken to study the morphological, chemical, physical and mineralogical characteristics of the area. and explore possible .
https://jssae.journals.ekb.eg/article_54377_f2aca9eba04a01435f493206fe51aec7.pdf
2012-09-01
885
898
10.21608/jssae.2012.54377
Landforms
plains
Egypt
Abbas
H. H.
1
Fac. of Agric., Banha University, Egypt.
AUTHOR
M. E.
Ali
2
Fac. of Agric., Banha University, Egypt.
AUTHOR
A. H.
Abdel Hameed
3
Fac. of Agric., Banha University, Egypt.
AUTHOR
A. A.
Ramadan
4
Nuclear and Radiological Regulatory Authority (NRRN), Egypt
AUTHOR
M. E. M.
Dayed
5
Nuclear and Radiological Regulatory Authority (NRRN), Egypt
AUTHOR
ORIGINAL_ARTICLE
ENGINEERING STUDY ON AERATION SYSTEM SUITABLE FOR FISH FARMS
This research was carried out in the research fish farm – Faculty of agriculture – Mansoura University during season 2011 in order to study the effect of controlling the water temperature and the quantity of pumping air on tilapia fish growing dissolved oxygen quantity and power consumption in fish farm to reach the study goal the tilapia fish were cultured in two cement ponds (experimental and the traditional pond). The cement experimental pond was built as a cuboid-shaped with dimensions of 1500 ´ 1000 ´ 1800 mm length, width and height respectively. The pond has been equipped with Adding air compressing unit provided with perforated pipe, heating unit and water supply source. On the other hand the traditional pond with cylindrical shape has diameter of 1500 mm and height of 800 mm. Air was added with a hose in the traditional pond at the center of the pond bottom. The aeration system was evaluated in the two ponds by measuring the dissolved oxygen concentration, determine the uniformity of the dissolved oxygen, calculate the air quantity and measure the fish growing rate. From the prior results it can be concluded that the fish pond aerator using the perforated pipe is suitable for the tilapia fish at perforated pipe depth of 1200 mm, distance between holes of 150 mm and air pressure of 0.2 bar which obtain the suitable dissolved oxygen uniformity (the difference between the maximum and the minimum dissolved oxygen value) of 1.5 mgl-1, with average of 6.92 mgl-1, the highest growth rate in the experimental pond was higher than the traditional system about 60.74 % and keep the dissolved oxygen higher than the low limit to fish good life about 1.92 mgl-1. This experimental pond conditions with the perforated pipe may give a chance to more perfect diffusion for fish along the all pond size.
https://jssae.journals.ekb.eg/article_54376_eab9c6b1b6f9699da61bba85697a7ac2.pdf
2012-09-01
899
909
10.21608/jssae.2012.54376
M. M.
Ibrahim
1
Agric. Eng. Dept., Fac. of Agric. Mansoura Univ.
AUTHOR
H. E.
El-Morsy
2
Agric. Eng. Dept., Fac. of Agric. Mansoura Univ.
AUTHOR
F. F.
Khalil
3
Animal Production, Dept., Fac. of Agric. Mansoura Univ.
AUTHOR
A. E.
El-Rayes
4
Agric. Eng. Res. Inst., Agric. Res. Center.
AUTHOR
F. M.
El-Sheikh
5
Agric. Eng. Res. Inst., Agric. Res. Center.
AUTHOR
ORIGINAL_ARTICLE
EFFECT OF DIFFERENT FERTILIZER SOURCES ON YIELD AND SOME NUTRIENT CONTENTS OF SPINACH PLANT (Spinacia oleracea L.)
Two field experiments (the first one started on 3/11/2010 and the second was on 3/1/2011) were carried out to investigate the. yield and quality of spinach as influenced by organic ( two levels: 0.0 and 15 m3 compost fed-1), Bio. ( 0.0 , Microbine and Nitrobine ) and chemical fertilization ( Four levels; 0.0 , 50.0 , 100.0 and 150 % of recommended dose) at EL-Gawashna village, EL- Sharkia Governorate, Egypt. The possible combination between the studied factors levels represented 24 treatments
The obtained results can be summarized in
Increasing mineral fertilizations from 0 – 50% led to a progressive increase in yield weight amounted by 20.649 % , while rising mineral fertilizations from 50.0 –100% led to a slight increase in that trait (0.856 %). 3.651 % increase in yield weight was noticed due to inoculation with both nitrobine and microbine.
Using organic fertilization decreased plant nitrate by 14 %. Spinach plant nitrate was decreased from 279.087 to 241.700 ppm as a result of Nitrobine fertilization and from 279.087 to 241.977 ppm as a result of microbine fertilization.
Increasing in spinach plant spinach nitrate was found concomitant with a constant increase in NPK mineral fertilization dose.
spinach plant nitrite was statistically responded to both compost application and bio- fertilization where statistically decreased in it's value compared with unfertilized treatment.
Organic fertilization tended to increase N content of spinach plant under any studied mineral fertilization level ( 50, 100 and 150 % of recommended dose)
Inoculation of spinach seeds before planting by nitrobine and microbine increased N content of spinach plant by 5 % and 5%, respectively.
No evidence for superiority of any inoculation than the other regarding to increasing the nitrogen content of spinach plant.
Compost effects did not appear on P content of spinach plant, whenever N P K fertilization have done .
Inoculation maximized phosphorus content of spinach plant where neither organic nor NPK mineral fertilization were added than that under another conditions .
No difference in Phosphorus content between nitrobine and microbine treatment means was found .
8- Phosphorus concentration was significantly increased with increasing N P K fertilization level till 100 % then decreased after that (150 % of N P K ) .
A slightly increase was found in K content due to both organic fertilizer and bio – fertilizer addition compared with no addition of each .
https://jssae.journals.ekb.eg/article_54371_0f3056bfafe205e0b92d8d5f2e4b3d98.pdf
2012-09-01
911
921
10.21608/jssae.2012.54371
M.W.
El-Agrodi
1
Soils Dept., Fac. of Agric. Mansoura Univ., Egypt.
AUTHOR
G.
Labeeb
2
Soils Dept., Fac. of Agric. Mansoura Univ., Egypt.
AUTHOR
M.R. A.
Mohamed
3
Plant Nutrition Dept., Soil, Water and Enviro. Res. Inst, Agric. Res. Center
AUTHOR
T. A. M.
Abdou
4
Plant Nutrition Dept., Soil, Water and Enviro. Res. Inst, Agric. Res. Center
AUTHOR
ORIGINAL_ARTICLE
RESPONSE OF ONION YIELD, BULBS QUALITY AND STORAGE ABILITY TO WATER REGIME
The present investigation has been carried out at Giza Agricultural Research Station-ARC in the three winter seasons of 2007/2008, 2008/2009 and 2009/2010. The main objective of this work is to investigate the effect of irrigation water regime on onion production. Combined analysis of the three seasons indicated that the highest values of marketable and total yield (t/fad.) were recorded from the wet treatment. Also, average bulbs weight, bulb diameter, number of growing points/bulb were significantly increased with increasing number of irrigations up to five irrigations. Bulb total soluble solids and bulb dry matter content were significantly increased with decreasing number of irrigations and the highest value was recorded with three irrigations. Sprouting bulb %, rot bulbs % and total weight loss % were significantly higher with five irrigations than three irrigations. Seasonal water consumptive use ranged from 1270 to 1981m3. Irrigation water requirements ranged from 2066 to 2920 m3/fad. It can be noted that the highest values of water consumptive use were found to be from the wet treatment. Water use efficiency values were 5.80, 6.36 and 5.49 kg onion bulbs/m3 for water consumed of dry, medium and wet levels of irrigation, respectively. It can be concluded that application of four irrigations could be recommended for good yield and storability; in addition, the medium irrigations regime (four irrigations) produced the highest values of water use efficiency.
https://jssae.journals.ekb.eg/article_54372_17fa3adda992edf3733d5e222d7d12bc.pdf
2012-09-01
923
935
10.21608/jssae.2012.54372
A. M. A.
Abo Dahab
1
Field Crops Res. Inst. (FCRI); Agric. Res. Center (ARC); Egypt
AUTHOR
A. F. K.
Fouad
2
Water Requirements & Field Irrigation Res. Dept. Soil, Water, and Environment Institute; ARC; Egypt.
AUTHOR
ORIGINAL_ARTICLE
ACCELERATED DRYING OF SUN FLOWER SEEDS
A study was carried out to test and evaluate the effect of accelerated drying of sunflower seeds on seeds moisture content, fungal load on seeds surface and stabilization of the extracted oil using a conduction heating rotary dryer. The drying temperatures were set at approximately 75, 85, 95,105, 115, 125, 135 and 145o C and the drying times were set at 3, 6, 9, 12 and 15 min. The results showed that all the drying process occurred at the falling rate period in which the rate of evaporation tends to fall as the moisture content decreases and the drying curve decays exponentially towards the final moisture content. Rapid moisture removal from seeds was obvious in all experiments particularly at higher heating surface temperature and longer exposure time. The results also showed that the simple equation was satisfactorily described the drying behavior of sunflower seeds and predicted the change in seeds moisture content as indicated by the higher coefficient of determination (R2). Meanwhile, high temperature conduction heating reduced the fungal load in sunflower seeds in an effective manner. Also, the extracted sunflower oil was stabilized at certain combinations of heating surface temperature and exposure time as indicated from the lower values of free fatty acids of the these samples. It can be said that, the accelerated drying and heat stabilization of sunflower seeds using the conduction heating rotary dryer may be considered as an effective procedure for moisture reduction, fungal inactivation and oil stabilization. In general, heating surface temperature of 145o C and the exposure time of 15 min are recommended to decrease the moisture content of sunflower seeds to the safe level of 5.8% (w.b), the fungal load to 102 colonies/g. and the percentages of free fatty acids to1.97 %.
https://jssae.journals.ekb.eg/article_54379_c8ef03ae491cafe3cca1ad645b1dd643.pdf
2012-09-01
937
949
10.21608/jssae.2012.54379
A. M.
Matouk
1
Agric. Eng. Dept, Fac. of Agric., Mansoura Univ
AUTHOR
M. M.
El - Kholy
2
Agric. Eng. Res. Institute, Dokki, Giza
AUTHOR
Solaf
Abd El - Raheam
3
Agric. Eng. Res. Institute, Dokki, Giza
AUTHOR
ORIGINAL_ARTICLE
COMPARISON OF TWO IRRIGATION SCHEMES FOR SURFACE-IRRIGATED MAIZE WITH CONVENTIONAL IRRIGATION IN THE MIDDLE NILE DELTA
Fixed-furrow irrigation (FFI14 with 14 days interval and FFI7 with seven days interval) were used to investigate the impacts of deficit irrigation on yield, crop-water relations and economic return at Middle Nile Delta area in comparison with every furrow irrigation (EFI, conventional method with 14 days interval). The results indicated that grain yield was increased with FFI7, whereas it tended to decrease under FFI14, in comparison to EFI. The water applied was reduced with FFI7 and FFI14 when compared to EFI. The crop water use decreased under the FFI7 and FFI14 techniques as compared to EFI. The FFI7 scheme exhibited improved crop water use efficiency values, compared to EFI. The results indicated also that FFI7 treatment does not only increase grain yield, benefit-cost ratio and net return, but also save irrigation water.
https://jssae.journals.ekb.eg/article_54374_0649e3a5ebf2f3cf25178f5b5385963c.pdf
2012-09-01
951
959
10.21608/jssae.2012.54374
Maize
Zea mays L
Fixed-furrow irrigation
Maize-water relations
Benefit-cost ratio (BCR)
A. A.
Abd El-Halim
1
Soil and Water Dept., Fac. of Agric., Tanta University
AUTHOR