eng
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
2019-09-01
10
9
499
505
10.21608/jssae.2019.53651
53651
Original Article
The Interaction Effect of Humic Substances and Mineral Phosphorus Fertilization on Forage Yield and some Macronutrients Uptake of Triticale under different Soil Salinity Levels.
M. El-Metwally
1
Fatma Ghaly
2
I. Mosaad
dribrahim1981@yahoo.com
3
M. Al-Anos
4
Soils Department, Faculty of Agriculture, Damietta University, Egypt
Soils Department, Faculty of Agriculture, Damietta University, Egypt
Soil Fertility and Plant Nutrition, Soil, Water and Environment Research Institute, Agriculture Research Center, Giza, 12619, Egypt
Soil Fertility and Plant Nutrition, Soil, Water and Environment Research Institute, Agriculture Research Center, Giza, 12619, Egypt
Salinity becomes one of the most important and serious agricultural problems. Furthermore, it is an ever-present impendence to crop productivity, especially in the countries where irrigation is a determining factor for agricultural activity. It is known that crop matching is one of the ways to overcome the problem of soil salinity, such as triticale plant which was recognized as a crop suitable for growth in saline soils. Two field trials were conducted to study the interaction effect of soil salinity levels, Humic substances and mineral phosphorus fertilization, it can further illustrate how triticale cultivation in saline soils is developed by studying the impact on plant height, forage fresh and dry weight, total NPK uptake in dry forage. All privies parameters were depressed with increased salinity levels. While the order of Humic substances for their influences on triticale growth parameters and total N, P and K uptake were as follows: Falvic soil, Falvic foliar, Humic soil, Humic foliar, without Humic substances. While, applying 140 kg P ha-1 gave the highest results of previous parameters. While the interaction effect shows that when using 70 kg p ha-1 in low soil salinity (SL), or when using 140 kg p ha-1 in moderate soil salinity (SM), the effect of Humic substances will become clear on fresh and dry forage yield and total N, P and K uptake of triticale. Therefore, it is preferred that applying Humic substances and mineral phosphorus fertilization to the improvement of triticale production with increasing soil salinity.
https://jssae.journals.ekb.eg/article_53651_5f0a81711ac03ee9ed5270c65699d248.pdf
Triticale
Humic substances
Fulvic
mineral phosphorus
nitrogen
potassium
uptake
eng
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
2019-09-01
10
9
507
515
10.21608/jssae.2019.59767
59767
Original Article
Assessment of Compost Production Parameters of Waste using a Cylindrical Production Device.
H. El-Morsi
1
M. Abd Elaal
2
M. El-Shshtawi
mohnaiem@gmail.com
3
Agric. Eng. Dept., Fac. of Agric., Mansoura Univ.
Agric. Eng. Dept., Fac. of Agric., Mansoura Univ.
Agric. Eng. Dept., Fac. of Agric., Mansoura Univ.
This study aims to manufacture an integrated automatic control unit for the production of organic fertilizer in all steps of production for the fermentation period, by adjusting parameters throughout the process. There are 5 main components, namely: the frame is carrying the cylindrical body - power transmission system - water supply system - ventilation system - control system connected to sensors. The first mixture was made C1 and consists of cattle dung, shredded paper and field residues in proportions of 5: 1: 2.5 and the second mixture C2 was assembled from field residues, sugar cane residues and rabbit dung, the mixtures were made by 1: 0.5: 1.8. These percentages are determined according to the nitrogen carbon ratios of each waste type, which must be adjusted in aggregate to an appropriate entry ratio of 1:30. The variables studied are the speed of the stirring system with four levels (17, 22, 27 and 32 rpm), 3 levels of angles (45, 50 and 55 degrees) as well as three levels of processing time (600, 1200 and 1800 sec). To verify the efficiency of the mixing and mixing were identified 8 points and measure the moisture homogeneity in these points after stirring and add the amount of water initially fit the pile. It was concluded that better moisture distribution resulted from a 50-degree angle with a speed of 22 rpm and a 1200 sec processing time are the best parameters, That give a mixing efficiency.
https://jssae.journals.ekb.eg/article_59767_e0056d4ece25e438d9b1716ad30bcb0b.pdf
Waste fermentation
Compost coefficients
physical and chemical properties
Moisture distribution
Coefficient of variation
eng
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
2019-09-01
10
9
517
525
10.21608/jssae.2019.62560
62560
Original Article
Humic Acid Influence on Chemically Extractable forms of Iron and Manganese in some Calcareous Soils
Sherine Shehata
jshtpm@gmail.com
1
Soil Physics and Chemistry Department, Desert Research Centre, El-Mataria St., Cairo, Egypt.
In a split-split plot design with three replicates, a vitro kinetic experiment was carried out during two months to study the effect of both individual applications of either of two sources of humic acids (HAs) react with (or without) Fe or Mn on desorption of both micronutrients from three calcareous soils varying in their active CaCO3 contents. Each HA was applied at a rate of 100 mg kg-1 soil. Each of Fe and Mn was added in the acetate form (CH3COO) at a rate of 50 mg kg-1 soil. Results showed that the application of HAs with Fe or Mn led to minimizing fixation of both ions on soil particles compared to the control soil (untreated soil). A kinetic study implied used three different models well described the rate of Fe and Mn desorption from the treated soils by having a high and significant coefficient of determination R2 and low standard error SE. According to the rate constants of the used models, applications of either the two HA with Fe or Mn were associated with a significant increase in the rate of both ions desorption with some prefer ability to HAP (derived from pudrite) compared to HAC (derived from clover straw compost). Different mechanisms take place between CaCO3 soil particles, HAs and Fe or Mn systems were discussed.
https://jssae.journals.ekb.eg/article_62560_d3268ec638ecc14e349ee0fde869fafa.pdf
Humic acids
iron
Manganese
Calcareous soil
eng
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
2019-09-01
10
9
527
532
10.21608/jssae.2019.62567
62567
Original Article
Evaluation of Cutting Blades Impact on Productivity and Performance of Sugar Cane Harvesting Machine
M. Hassan
mabdallah8@yahoo.com
1
Agric. Eng. Res. Inst., Giza, Egypt
Field experiments were carried out to determine effects of cutting blade types on sugar cane mechanical harvest. The evaluation of used sugar cane harvester is carried out through four levels of forward harvesting speed of 2.4, 3.2, 4.1 and 5.2 km/h, three cutting blade types namely: smooth blades, serrated blades and fast exchange blade, and four levels of blade angles of 0, 10, 17.5 and 22.5˚ on the area of sugarcane cutting, productivity, percent of sugarcane cut stalks, percent of damage cutting blades, total losses, total cost and criterion function cost. The results concluded the following: maximum of the area of sugarcane cutting was 4522.8 m²/h and productivity of 49.6 ton/h and percent of sugar cane cut stalks of 96.1% were recorded at using serrated blades type with 17.5° tilt angle. Also, the minimum of percent of damage cutting blades was 9.7%, total losses of 1.9%, losses cost of 18.9 L.E/h and criterion function cost of 192.4 L.E/h. Finally, the performance characteristics of used machine were influenced by the investigated variables.
https://jssae.journals.ekb.eg/article_62567_25dc5dbace3e92a638afd6dc0e754b50.pdf
Sugarcane
the area of sugarcane cutting
productivity
percent of sugarcane cut stalks
total losses and criterion function cost
eng
Mansoura University, Faculty of Agriculture
Journal of Soil Sciences and Agricultural Engineering
2090-3685
2090-3766
2019-09-01
10
9
533
540
10.21608/jssae.2019.74903
74903
Original Article
Drying characteristics of Thompson seedless grapes using infra-red dryer.
A. Matouk
1
M. El-Khouly
2
A. Tharwat
3
M. El-shenawy
4
Fac. of Agric., Dep. of Agric. Engng., Mansoura Univ., Egypt.
Agric. Engng. Res. Inst., Giza, Egypt.
Fac. of Agric., Dep. of Agric. Engng., Mansoura Univ., Egypt.
Fac. of Agric., Dep. of Agric. Engng., Mansoura Univ., Egypt
The drying characteristics of Thompson seedless grape (vitis vinifera L.) were investigated using laboratory scale infra-red dryer at four levels of intensity of infra-red radiation (0.861, 0.973, 1.039 and 1.161 kW/m2). The drier was also equipped with three axial flow fans to supply air with at three different temperatures (40, 50 and 60 oC) and constant velocity of 2 m/s over the samples to carry the evaporated moisture. The results showed that the moisture content of dried grapes was decreased from (287.15 ±1, %d.b.) to (19.83 – 12.37, % db). It has been found that, both air temperature and infra-red radiation intensity affects rate of drying. Two drying models: Lewis model and Henderson and Pabis's model were examined. The models were compared using the statistical coefficients such as (R), (SE), (χ2), (MBE) and (RMSE). Lewis’s model was the best model for describing the drying curves of Thompson seedless grapes. A diffusion model was used to describe the moisture transfer and the effective diffusivity at each drying temperature and radiation intensity. The effective diffusivity ranged from (2.2393x10-9) to (2.3033x10−10 m2/s) and was significantly affected by radiation intensity. The average value of activation energy was (3.2051 kW/kg). The seedless Thompson grape dried at radiation intensity of (0.973 kW/m2) and air temperature of (60 °C) recorded the highest quality of the dried samples in terms of, total soluble solid, total sugar, reducing sugars and remained Residual sulphur (SO2).
https://jssae.journals.ekb.eg/article_74903_150450e5e9d217096ad5822e901e763b.pdf
Drying characteristics
infra-red dryer
effective diffusivity
Activation energy