TY  - SER
AU  - Hassan,M.A.
AU  - Morad,M.M.
AU  - Arnaout,M.A.
AU  - Badr,M.M.
TI  - Comparative study between some different combine sizes in respect to unit plot area
KW  - Harvesting machinery
KW  - Agricultural machinery
N1  - Includes references
N2  - The performance of three different combines (Yanmar- 1.45m width, Local- 2.1m width and ciaas- 4.5m width) in terms of harvesting time, field capacity and field efficiency, total grain losses, fuel consumption, energy and cost was experimentally investigated as a function of change in unit plot area, combine forward speed and grain moisture content. Two main experiments were carried out. The first experiment was conducted to select optimum combine size suits for a certain field size. While the second experiment was conducted to estimate the optimum parameters for operating the combines during harvesting rice crop. The experimental results reveal to the following: - The lowest harvesting time of (31 min/fed.) was recorded under the use of c1aas combine in unit plot area of 5.0 fed. at a forward speed of 4 km/h and grain moisture content of 22%. - The highest field capacity of (3.43 fed.lh) was recorded under the use of c1aas combine in unit plot area of 5.0 fed. at a fOl'ward speed of 4 km/h and grain moisture content of 22%. - The highest field efficiency of (89.3%) was recorded under the use of yanmar combine in unit plot area of 1.0 fed. at a fonvard speed of lkm/h and grain moisture content of 22%. - The lowest total grain losses of (2.12%) was noticed under the usc of yanmar combine in unit plot area of 1.0 fed. at a forward speed of 1 km/h and grain moisture content of 22%. - The lowest fuel consumption of (4.74 IIfed.) and the lowest energy requirement of (13.12 kw.h/fed.) were determined with the use of yanmar combine at a forward speed of 4 kmlh, unit plot area of 1.0 fed. and grain moisture content of 22%. - The lowest criterion cost of (148.42 L.E./fed.) was recorded under the use of yanmar combine in unit plot area of 1.0 fed. at a forward speed of3kmlh and grain moisture content of22%
UR  - http://nile.enal.sci.eg/EALE/2005/ZJAR/3205/1/291.pdf
ER  -