@article { author = {Ewais, Magda and Zakaria, Sahar and Mohamed, A.}, title = {EFFECT OF MINERAL FERTILIZER INTEGRATION WITH ORGANIC MANURE ON GROWTH, YIELD AND QUALITY OF MAIZE (Zea mays l.)}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {165-179}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.41986}, abstract = {Two field experiments were conducted to evaluate the effect of integrated nutrients on growth, yield and quality of maize (Zea mays L.) c.v. single hybrid 30K8. Maize plants were grown in a sandy loam soil of El-kasasin (30º 33׳ 31״ N- 30° 56׳ 7״ E, elev. 15.8 m), region, IsmailiaGovernorate, Egypt during the summer seasons of 2013 and 2014. The experiments were laid out in a randomized complete block design in three replicates contained the following treatments: (T1) recommended NPK (Control), (T2) Compost(10 m3 /Fed.), (T3) Compost +PK, (T4) Compost +N, (T5) Compost +NP, (T6) Compost +NPK, (T7) Compost +NPK +Mg and (T8) Compost +NK. The results indicated that the recommended dose of NPK+ Mg + compost (T7) significantly increased all the studied parameters. The application of compost +NPK +Mg (T7) gave the highest grain yield (3745 Kg/fed) which was13.66 % higher than the control (3295Kg/fed) and 25% more than the sole compost (2996 Kg/fed). Different treatments of compost in combination with inorganic fertilizers resulted in high  significantly increases of growth and yield of maize, i. e., plant height, ear characters (length, diameter and weight) as well as grain yield/fed., enhanced nutrition and quality of grain  compared to control and compost alone. The application of inorganic fertilizer combined with compost showed higher concentration of N, P and K in grains as compared to compost alone. Total soluble sugars, starch and total carbohydrate contents of grains varied within the ranges of 1.75-2.55%, 61.5-72.2% and 63.25-74.55%, respectively. In general, compost as a manure in combination with inorganic fertilizers has been suggested to obtain better growth, yield and quality parameters (protein and oil yield, total carbohydrate, total soluble sugars (TSS) and starch) of maize under conditions of sandy loam soils.}, keywords = {compost,Inorganic fertilizer,Integrated Nutrient Management and Maize}, url = {https://jssae.journals.ekb.eg/article_41986.html}, eprint = {https://jssae.journals.ekb.eg/article_41986_ad3b8a05dc29d29f91667c0c2772d90d.pdf} } @article { author = {Nour, H.}, title = {BRAKING OF DC MOTORS USING ELECTRICAL REVERSE VOLTAGE SUPPLY}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {181-202}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.41993}, abstract = {This paper presents the electrical performance of DC chopper loaded by large DC motor and large batteries of different sizes or connected with DC supply in series with it. The motor is represented by an inductor where the battery is represented by different values from 12v to 108v. The DC source supplied the load has a value of 110v.The load motor can be connected with a different DC supply series with it in spite of batteries. The aim of this research is the use of an injected DC supply connected in series with the large motor for protection purpose. The results of this research can be applied for the protection of motors at standstill conditions without the interruption of the power supply of the motor. The research illustrates that batteries are preferred than the DC supply. This research is applied in solar energy laboratory on filling machine. It may be used for filling any liquids in bottles automatically. A microcontroller programmed and operates as a control of the filling process. The DC motor under investigation represents the drive of the controlled filling machine. An electronic circuit is designed with microcontroller construct the filling machine controller.}, keywords = {Microcontroller,Photovoltaic,Solenoid Valve،DC Motor}, url = {https://jssae.journals.ekb.eg/article_41993.html}, eprint = {https://jssae.journals.ekb.eg/article_41993_060d20b672f632a9b9d1a9e83c9076c8.pdf} } @article { author = {Samiha, Ouda and Noreldin, Tahany and Elsayed, Maha}, title = {“ET-CALCULATOR” A NEW MODEL TO ROBUSTLY CALCULATE EVAPOTRANSPIRATION IN EGYPT}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {203-211}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.41992}, abstract = {The Penman-Monteith (P-M) equation is widely recommended to calculate evapotranspiration (ET) because of its detailed theoretical base and its accommodation of small time periods. Thus, there is a need to develop a model to easily calculate ET and can be used by extension workers.  The objective of this research is to use evaluate the MS Excel sheet capability to develop a program to calculate ET values in the Governorates of the Nile Delta and Valley. A model was developed called “ET-Calculator”. The model uses P-M equation to calculate ET. Weather parameters of 17 governorates in the Nile Delta and Valley were input (maximum and minimum temperature, mean of relative humidity, wind speed and solar radiation), as well as the elevation above sea level in order to calculate ET values. To test the validity of the model, the estimated ET values by ET-Calculator model were compared to the estimated ET values by BISm model. Closeness of both estimated ET values to each other was tested by Root Mean Square Error per observation (RMSE/obs) and Willmott index of agreement (d). The results indicated that ET-Calculator model estimated monthly and annual ET values in all governorates similar to the ET values estimated by BISm model, where RMSE/obs values were low and d values were high. These results implied that the presence of friendly and easy use program to calculate ET, such as ET-Calculator facilitate the calculation of water requirements for crops by extension workers and could improve the current situation of agricultural water management in Egypt.}, keywords = {BISm model,Nile Delta and Valley governorates,Penman-Monteith equation and weather parameters}, url = {https://jssae.journals.ekb.eg/article_41992.html}, eprint = {https://jssae.journals.ekb.eg/article_41992_faee495d263ced25aa1500b69a183276.pdf} } @article { author = {Khalil, Zeinab and Salem, Azza and Sultan, Fadia}, title = {WATER STRESS TOLERANCE OF FODDER COWPEA AS INFLUENCED BY VARIOUS ADDED LEVELS OF POTASSIUM SULPHATE}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {213-231}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.41989}, abstract = {A field experiment was carried out on sandy soil of the Agricultural Research Experimental Station, at Ismailia Governorate (latitude 30º 35ʹ 41.9ʺ N and longitude 32º 16ʹ 48.8ʺ E), Egypt, during two successive growing summer seasons; 2013 and 2014. The study aimed to investigate the effect of applying three levels of water supplied through sprinkler irrigation system representing; 100 %, 75 % and 50 % of water supply which corresponding to 2500, 1875 and 1250 m3 fed-1, on the forage yield productivity and quality of fodder cowpea. Such levels represented commonly practiced irrigation (control), moderate and severe water deficit stress for fodder cowpea, respectively. Also, to evaluate the role of four rates of potassium sulphate fertilization namely, 24, 36, 48 and 60 K2O kg fed-1 in alleviating the adverse effect of water deficit stress on cowpea plants under these conditions. Three cuts were taken throughout the growth season. The obtained results revealed that decreasing the levels of water from 100% to 75 or 50% level markedly reduced all traits under studied; plant height, leaves number per plant, leaves/stem ratio of cowpea, green and dry forage yield (kg fed-1), at the three cuts as well as the total yield of the three cuts. The reduction noticeably appeared more detrimental under 50% of water stress especially at the 3rd cut. The results showed that the total green and dry forage yield of the three cuts of plants treated with 48 kg K2O fed-1, under 50% irrigation level, reduced by 52.4 % and 57.0 %, respectively; compared with the yields obtained by plants received the recommended K rate (48 kg K2O fed-1) under commonly practiced irrigation. Increasing water deficit stress lowered carbohydrate %, crude proteins % and ash content (kg fed-1) in plants as well as K% in leaves. Also, it significantly decreased the contents of Fe, Zn and Mn in plants.      Increasing the application rates of K up to 60 K2O kg fed-1 substantially elevated all the aforementioned studied traits under each level of irrigation and the reduction resulted due to water stress, under 75% and 50% levels could be suppressed. Application of the highest K rate (60 K2O kg fed-1) not only considerably heightened all the detected nutrients; carbohydrate % and proteins %, ash and micronutrients (Fe, Zn and Mn) uptake by plants as well as K% in leaves of cowpea, but also it remarkably enhanced the water use efficiency by plants grown under 75% irrigation than all applied K rates treatments under 100% irrigation. From the obtained results, it could be inferred that under moderate water stress 75% of the commonly practiced irrigation application of 60 K2O kg fed-1 could sustain cowpea plant to grow satisfactorily.}, keywords = {Water stress- Fodder cowpea- Drought stress tolerance- Potassium sulphate}, url = {https://jssae.journals.ekb.eg/article_41989.html}, eprint = {https://jssae.journals.ekb.eg/article_41989_230c1f81ef583016de29024372ba8c30.pdf} } @article { author = {Aziz, Manal and Rashed, Sahar}, title = {RESPONSE OF WHEAT YIELD AND ItS COMPONENTS TO HUMIC SUBSTANCES AND CYANOBACTERIA APPLICATION}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {233-242}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.42004}, abstract = {Two field experiments were conducted at the Experimental farm of Sakha Agric. Res. Station during 2012/2013 and 2013/2014 growing seasons to evaluate the potential effect of addition of humic substances and cyanobacteria (mixture strain of Anabeana oryzae and Nostoc muscorum), on wheat (Giza 168) yield and its components. The experiment layout was split plot design. The main plots were assigned by application methods where three application treatments (soaking, foliar and soaking with foliar) were used. The subplots were assigned by four treatments of cyanobacteria, H.S and without. Results indicated that inoculation with cyanobacteria and H.S significantly increased grain and straw yields. The yield and yield components, chlorophyll content, N uptake and protein % in grain were increased over their values with the untreated plants in both growing seasons. The obtained results indicated also that treatment of (soaking + foliar) with cyanobacteria + H.S significantly increased the yield compared with other application method, the highest values of grain yield 23.79 and 23.43 ardab/fed., straw 4.82 and 4.84 ton/fed., protein 11.73 and 11.6%, total chlorophyll 43.65 and 43.48 spad unit and plant height 89 and 87 cm with (S.+F.) treatment.}, keywords = {(S.+F.) = wheat,humic substance,Cyanobacteria}, url = {https://jssae.journals.ekb.eg/article_42004.html}, eprint = {https://jssae.journals.ekb.eg/article_42004_e0ffe701c83eaeeb132bd402b944b30f.pdf} } @article { author = {El-shazly, A.}, title = {WATER AND CROP MANAGEMENT UNDER DRIP IRRIGATION TO SUIT MECHANICAL PICKING OF EGYPTIAN COTTON IN ARID REGIONS}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {243-257}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.42007}, abstract = {Sit up, operation and maintains costs of drip irrigation system are high with respect of other modern irrigation systems. This is a limited factor to spread the drip system especially in new reclaimed lands .Using lower water distribution uniformity should reduce these costs. The reducing cotton yield and quality as using lower uniformity of the system is unclear. The field experiments were conducted at Ideal farm of Oil crops. West No. baria area, Behera governorate, in the 2010 and 2011 grown seasons of cotton. Extra long staple variety (Giaz92) is used .The cultivated area is about 31 feddan. Full line of mechanization was used. Two types of cotton picker (4 row self propelled machine and 2 row trailed machine) were used. Christiansen uniformity coefficient (CU) of irrigation approximately 93%, 85% and 67% and three irrigation levels of 100% WR, 90%WR and 75%WR were used. The water requirement WP determined according to DACOM irrigation management by using soil moisture properties, weather station, weather forecast and remote sensing by using satellite technology. 1-Higher system uniformity within irrigation levels produced a more suitable plant height for mechanical picking, yield and more picking efficiency than lower system uniformity 2- The mechanical picking was reduced picking cost by 70% compared to manual picking.3- The system uniformity of 85% and water requirement of 23801m3/fed should be used of drip irrigation system and suitable for mechanical picking.4- The picker does not adversely affect the grad and lint color after pre cleaning of seed cotton used and fiber quality such as fiber length, fiber strength, length uniformity micronaire and elongation.    }, keywords = {}, url = {https://jssae.journals.ekb.eg/article_42007.html}, eprint = {https://jssae.journals.ekb.eg/article_42007_3f6b291b1104ca9eb1792d49ee8530b5.pdf} } @article { author = {Sayedahmed, A.}, title = {MODELING AND CORRELATION OF SOIL CONE INDEX FOR BULK DENSITY, MOISTURE CONTENT AND PENETRATION DEPTH LEVELS IN A SANDY LOAM SOIL}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {259-273}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.42000}, abstract = {            Soil cone index (CI) is as criteria for representing soil strength. Itis a useful tool to evaluate the impact of tillageprocess and predicting draft force of tillage implements. The current research investigated modeling and correlation of CIfor bulk density, moisture content and penetration depth levels in a sandy loam soil. CI datawere gathered and analysed. Regression models for correlatingCIwith independent parameters were developed and compared with the most promising models which selected from literature.Statistical analysis indicated that soil moisture content (MC), soil bulk density (BD) and penetration depth(PD) had significant effect (P=0.01) on CI. The all interactions among variables (BD, MC and PD) had alsosignificant effect (P=0.01) on CI. It is found that BD and PD are linearly and directly proportional to CI. However, MC is quadratic curve (second degree) and inversely proportional to CI. The results showed thatmaximum value of CI (5153 kPa) was recorded at BD (1.82 g/cm3), MC (4.6%) and PD (15 cm). But, minimum value of CI (346 kPa) was recorded at BD (1.36 g/cm3), MC (8.8%) and PD (5 cm).Two equations developed by regression analysis (linear and polynomial) for estimating of CI were obtained. The polynomial equation (R2=95.6%) was more precision compared with linear equation (R2=93.3%). The obtained two regression models (linear and polynomial) were compared with other regression models (exponential and power) from literature. It can be concluded that the linear and polynomial equations were exhibiting the closest match to measured CI. The polynomial equation was also the best matching equation for estimating of CI (highest R2 of0.968 and lowestroot mean squared error of 127.2kPa).}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_42000.html}, eprint = {https://jssae.journals.ekb.eg/article_42000_8497ef5cb2818adbce8fdd908ae388f4.pdf} } @article { author = {Aboukarima, A. and Elsoury, H. and Minyawi, M.}, title = {SIMPLE MATHEMATICAL MODELS FOR PREDICTING LEAF AREA OF COTTON PLANT}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {275-294}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.41998}, abstract = {Cotton is considered as one of the most important crops in Egypt. Measuring the leaf area of such plant is one of the most accurate indicators to estimate the quantity of pesticides and productivity. Several research  works have shown that deriving mathematical models as a method  to estimate the leaf area of various plants is considered more precise, time- saving, cost-reducing and less harmful on the examined plants compared to direct methods of measuring leaf area such as digital planimeter, electronic devices and manual engineering measuring tools. In spite of all this developing mathematical models in the field of determining Egyptian cotton leaves area has not attained the least of research work. Therefore, the aim of the study is deriving a mathematical model suitable for predicting the area of cotton leaves. To achieve this aim, a mathematical model was developed using 240 Egyptian cotton leaves (Giza 86). These leaves were collected at random from different heights and different fields in Kafer El-Dawar centre, El-Behera Governorate, Egypt. Regression analysis has been used in developing 19 mathematical models to choose the best model for predicting leaf area through calculating statistical indicators that included: R2, root mean square error and mean absolute error. The selected models have been mathematically analyzed to obtain the regression constants of each model. Data analysis has shown that the best model is the one that determined the actual area of the leaf area. The outcome equation is as follows:   Where (LA) is the leaf area (cm2) and the rest of dimensions are measured in centimeters. The efficiency of this model has been tested by defining R2 and comparing predicted leaf area results from the model with measured leaf area results. The results have shown that the developed model mentioned above is the most accurate model to be recommended in estimating Egyptian cotton leaves area from leaf width (W), main lobe length (L), right lobe length (L1) and left lobe length (L2). The developed regression model can be considered an alternative method to determine the Egyptian cotton leaves area instead of the direct method represented by for example the leaf area measuring instrument.  }, keywords = {}, url = {https://jssae.journals.ekb.eg/article_41998.html}, eprint = {https://jssae.journals.ekb.eg/article_41998_7b7ed235f06bda5c544ee568359b6634.pdf} } @article { author = {Nassr, M. and Aziz, Manal and Gendy, A. and El-Saiad, I.}, title = {RESPONSE OF MAIZE VARIETIES TO N-FERTILIZER RATES UNDER DRAINAGE CONDITIONS IN CLAY SOIL.}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {295-307}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.42012}, abstract = {A field experiment was conducted at the Experimental Farm of Sakha Agric. Res. Station during the two summer growing seasons (2012 and 2013), to evaluate the effect of distance from drain line (1/4 and 1/2 distance from drain line) and applied N-fertilizer rate (90, 120 and 150 kg N/fed) on yield and yield components as well as N-content of two maize hybrids (single pioneer hybrid No. 10 (V2) and ternary hybrid No 329 (V1)) in clay soils. The tile lines were spaced to simulate a 20 m spacing and 1.2 m depth with a slope of 0.1%. Data showed that: Water table depths were increased with increasing time after irrigation. Water table depth near the drains was higher than in midway between drains. Soil bulk density was lower near the drain and gradually increased towards the midway between drains. Decreasing distance from drain line from L/2 to L/4 resulted in a significant increase in yield and yield components of maize crop as well as N-content (kg/fed.) and protein percentage in both seasons. Maize grains yield, 100 grains weight, ear diameter and Plant height increased with increasing rate of N-fertilization. The values of maize grain yield were 25.71, 27.66 and 29.68 ardab/fed in the first season and 26.23, 28.62 and 30.72 ardab/fed in the second season for 90, 120 and 150 kgN/fed., respectively. The corresponding values of protein percentage were 6.01, 11.68 and 15. 55 % in the first season and 5.94, 11.54 and 15.52 % in the second season, respectively. Data showed that V2 resulted in a significant increase in the grain yield, 100 grain weight and Plant height of maize crop. The combination between distance from drain line and 150 kgN/fed resulted in a high yield and yield components as well as N-content of maize crop. Maize varieties resulted in somewhat differences in the grain yield, 100 grains weight, ear diameter and Plant height as well as N-content and protein percentage of maize crop in both seasons with every N-fertilization. The highest values of grains yield, 100 grains weight, Ear diameter and Plant height as well as N-content and protein percentage of maize crop were obtained with combination between L/4, 150 kgN/fed and V2 while, the lowest values were obtained with interaction of L/2, 90 kgN/fed and V1 in both studied seasons. The obtained results revealed also, that 20 m drains spacing in clay soils is not the proper but may be economic. In addition, distance from drain line must be taken into consideration when distributing fertilizer treatments and their replicates in fertilization experiments to obtain reliable results.  }, keywords = {Drain line,nitrogen fertilizer,maize crop,clay soil}, url = {https://jssae.journals.ekb.eg/article_42012.html}, eprint = {https://jssae.journals.ekb.eg/article_42012_a26aadbebd381aeab07d492c80f24f69.pdf} } @article { author = {Abd El-Mageed, H. and Ismail, Nahed and El-Tantawy, M.}, title = {MODIFYING THE AMOUNT OF FERTILIZERS USING VARIABLE RATE ADDING TECHNIQUE}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {309-322}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.42036}, abstract = {This research was carried out at Meet Aly village, Dakahlia governorate in summer season 2013 to determine the optimum parameter which can be used to control fertilizing with variable rate technique. To achieve the aim of this research at two fertilizer prototype on row was developed by adding an electronic gate on/off (developed unit) to that hand gate on/off system (traditional unit) on the same prototype. Four forward speeds were applied namely 3.38, 4.38, 4.79 and 6.70 km/h once at fixed fertilizer rate (150 kg/fed) by traditional unit, and another at variable fertilizing rate by developed unit. To evaluate the fertilizer units performance the amount of nitrogen in soil, fuel consumption, field capacity and cost estimation were determined. From the results it can concluded that using the developed fertilizer unit; a controlled by the electronic system on/off gate saved the amount of fertilizer to 56.8 kg/fed and total costs to 209.36 LE/fed at forward speed of 4.79 km/h. It can be recommended that the applied developed technique can be tested in a large scale to test its efficiency and suggest another methodology other than soil chemical analysis such as GIS maps.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_42036.html}, eprint = {https://jssae.journals.ekb.eg/article_42036_ccf2d0e40594dee144279b9816a13f75.pdf} } @article { author = {El-Kholy, M. and Sherif, A. and Mahmoud, Y. and El-Sayed, G.}, title = {EVALUATION OF THE CONTAMINATION CAUSED BY HUMAN ACTIVITIES ON EL-ZOMOR CANAL, EL-GIZA GOVERNORATE.}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {323-336}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.42038}, abstract = {To assess the extent of the contamination of human activities on irrigation water of El-Zomor canal on soil and grown crop, soil, water, sediment and plant samples were taken from El-Zomor area during the growing season (2011-2012). Results showed that the measured trace elements as well as COD & BOD are below the permissible limit. While, the pathogenic indicators exceeded the permissible limits in water and sediments according to the Recommended Maximum limits. According to the calculated ratio EF; sediment mud samples are contaminated with Cd followed by Pb and Co. Ni & Cd were not found along El-Zomor canal. Soil samples are contaminated with Cd & Ni while the rest are within the normal range. BCR of plant tissues are showed a specified capability to accumulate Fe, Mn, Co in cauliflower tissue ; Zn, Cd are accumulated in  clover shoot and  ( Cr & Ni)  are accumulated in  wheat shoot. Public awarance and control bad human activities at the relevant state agencies are necessary.}, keywords = {Pathogenic indicator,trace elements,El-Zomor canal,irrigation water contamination}, url = {https://jssae.journals.ekb.eg/article_42038.html}, eprint = {https://jssae.journals.ekb.eg/article_42038_fb231d79e03a404776e38b8b50293cfb.pdf} } @article { author = {Shalabey, S.}, title = {DEVELOPMENT OF A LOCAL STEEL TRACK OF THE RICE HARVESTER FOR HARVESTING WHEAT CROP}, journal = {Journal of Soil Sciences and Agricultural Engineering}, volume = {6}, number = {2}, pages = {337-351}, year = {2015}, publisher = {Mansoura University, Faculty of Agriculture}, issn = {2090-3685}, eissn = {2090-3766}, doi = {10.21608/jssae.2015.42039}, abstract = {  The main objective of this research is to maximize utilization capacity of the Japanese rice combine for harvesting other crops by developing and equipping a local manufactured steel track instead of the original rubber track. The key development considerations of the harvester traction device are intended to the poor mobility and castle age of rubber tracks during harvesting wheat crop on rough terrains soil conditions. The traction performances of the developed steel track were investigated and compared to the traction performances of the original rubber track versus four different harvesting forward speed of; 0.39,0.50,0.72,0.94 m/sec, and two motion states; namely straight line state and curve state. The evaluation and comparisons parameters included:- track rolling resistance, track slip ratio, dynamic traction ratio, the harvester tractive force, traction efficiency, actual field capacity, fuel and energy consumption and the harvester operational costs. The results showed in general that the local manufactured steel track supply the greatest solution where there are tough soil terrains during wheat harvesting. The optimum proper developing parameters of the local steel track were contact length of 0.97 m, width of 0.30 m and weight of track of 0.89 kN. While optimum operation conditions as the combine harvester was equipped with the developed track were obtained at operating forward speed of 0.72 m/sec Whereas the following results were obtained:-highest traction efficiency of 83.1%, highest dynamic traction ratio of 78.1%, lowest rolling resistance of 1.99 kN, maximum pull force of 15.01 kN, traction force ranged from 13.5 to 20.1 kN at ranged slip ratio from 4.1 to 6.2%, average field capacity 0.89 fed/h, fuel consumption of 8.1 L/h. It was found that the total profit by wheat harvesting season increased 9% compared to the combine performance when equipped with the rubber track and the total cost (price) of manufacturing one steel track is about 1750 LE.}, keywords = {}, url = {https://jssae.journals.ekb.eg/article_42039.html}, eprint = {https://jssae.journals.ekb.eg/article_42039_8f8df7204c7b199526c99f5eaaded7db.pdf} }