| Author | Hu, Emilia Bernado Ong So |
| Call Number | AIT Thesis no.AE-79-07 |
| Subject(s) | Tillage--Research
|
| Note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | The dynamometer method of measuring draft components on tractor links has been used. A plough depth sensor was used to detect depth variations. Field
tests were conducted with varying depths of ploughing
(D) , and no-slip speeds at the gear being used (V) , at
different field moisture levels (MC) The analysis of data gathered led to the
establishment of empirical relationships between draft
and the factors markedly affecting its magnitude.
Linear and non-linear regression analyses were made.
The expression with the best correlation was in the form
of a first degree equation with three independent variables, Y = aD + bV + cMC, where Y is the draft of the plough; a, b, and c are constant coefficients.
Empirical equations established are valid only for Bangkok clay soil and with a three-bottom disc plough. |
| Year | 1979 |
| Type | Thesis |
| School | School of Environment, Resources, and Development |
| Department | Department of Food, Agriculture and Natural Resources (Former title: Department of Food Agriculture, and BioResources (DFAB)) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Singh, Gajendra |
| Examination Committee(s) | Jindal, Vinod Kumar ;Balasubramaniam, A.S. ;Konaka, Toshio
|
| Scholarship Donor(s) | USA Regional Economic
Development |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1979 |