000 03232cam a2200349 a 4500
003 EG-GiCUC
005 20250223031635.0
008 170104s2016 ua dh f m 000 0 eng d
040 _aEG-GiCUC
_beng
_cEG-GiCUC
041 0 _aeng
049 _aDeposite
097 _aM.Sc
099 _aCai01.07.02.M.Sc.2016.Di.D
100 0 _aDina Saber Ibrahim Bayoume
245 1 0 _aDesign of a combined machine for seedbed preparation for onion /
_cDina Saber Ibrahim Bayoume ; Supervised Gamal Eldeen Mohamed Nasr , Yossery Bayoumy Abdelhay , Mohamed Yousef Tayel
246 1 5 _aتصميم الة مجمعة لاعداد وتتميم مرقد البذرة للبصل
260 _aCairo :
_bDina Saber Ibrahim Bayoume ,
_c2016
300 _a95 P. :
_bcharts , facsimiles ;
_c25cm
502 _aThesis (M.Sc.) - Cairo University - Faculty of Agriculture - Department of Agricultural Engineering
520 _aThis study aimed at designing combined machine for seedbed preparation in one trip and evaluating its performance technically and economically under different operating conditions. The effect of the combined machine on some soil physical properties was studied. The design and implementation of the proposed model of the combined machine which consists of seven tines chisel plow as primary tillage equipment, packer roller as secondary tillage equipment, and two ridger tines for making a terrace. The combined machine has been tested and evaluated at the experimental station, Faculty of Agriculture, Cairo University, Giza Governorate, Egypt, under three levels of soil moisture contents (23% - 18% - 9.5%), three-working forward speeds (3.85- 4.69 - 5.30 km/h) and two depths of the tillage (15 and 25 cm). Actual field capacity, field efficiency, fuel consumption, wheel slip percentage, and brake horsepower were measured. The effect of combined machine on some soil physical properties (bulk density - total porosity - hydraulic conductivity {u2013} soil aggregates and size distribution) was studied. The most important results were increasing of actual field capacity of combined machine compared with the traditional method of seedbed preparation for onion crop, the highest value of actual field capacity was 1.98 fed/h compared with the traditional method 1.23 fed/h. Combined machine had lowest wheel slip percentage under different operating conditions, the minimum value of wheel slip percentage was 5.39% at 23% soil moisture content, 3.85 km/h and 15cm depth. The results showed an increase in field efficiency and decreasing in fuel consumption. The maximum value of field efficiency was 88.39%, while the minimum value fuel consumption was 4.86 l/h, and it was under 23% soil moisture content, 3.85 km/h and 15cm depth
530 _aIssued also as CD
653 4 _aClay loam soil
653 4 _aCombined machine
653 4 _aSeedbed preparation
700 0 _aGamal Eldeen Mohamed Nasr ,
_eSupervisor
700 0 _aMohamed Yousef Tayel ,
_eSupervisor
700 0 _aYossery Bayoumy Abdelhay ,
_eSupervisor
856 _uhttp://172.23.153.220/th.pdf
905 _aNazla
_eRevisor
905 _aSoheir
_eCataloger
942 _2ddc
_cTH
999 _c59323
_d59323