TY  - SER
AU  - Kumar,Vijendra
AU  - Gee-Clough,D.
AU  - Gupta,Chandra P.
AU  - Cochran,Billy J.
ED  - Government of Japan, 
TI  - Improving the performance of Thai traditional animal-drawn mould board ploughs
T2  - Thesis
PY  - 1985///
CY  - Bangkok
PB  - Asian Institute of Technology
KW  - Agricultural implements
KW  - Thailand
N1  - A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development; Thesis (M.Eng.) - Asian Institute of Technology, 1985
N2  - There is an extensive use of animal drawn mould board board ploughs in north-eastern Thailand. The Manufacturers of animal drawn ploughs have little idea of the shape-draft relationship. The plough bottoms of various shapes which are popular in the region have been tested in dry sandy loam soil conditions in a soil bin, using strain gauge mounted load rings, at typical speed and ploughing depth for animals. A significant variation in the horizontal, vertical and side forces was found. all the plough bottoms showed a common tendency of inverting soil in fairly equal amounts both to right and left. Only a small variation in soil inversion angles was seen. The plough bottom with low (not the lowest) lift angle and difference in radius of curvature as the soil particle moved from point of rest to about-middle of the surface of the mould board, has been proved the best-performing one from the view point of specific draft, inversion angle and plough capacity.
UR  - http://203.159.5.9/ait-thesis/detail.php?q=B19934
ER  -