| Author | Ahmmed, Sultan |
| Call Number | AIT Thesis no. AE-90-05 |
| Subject(s) | Planters (Agricultural machinery)
|
| Note | A thesis submitted in partial fulfilment of the requirements for the degree of Master of Engineering, School of Environment, Resources and Development |
| Publisher | Asian Institute of Technology |
| Abstract | Single row manually operated electrostatic planter for small seeds was
designed, fabricated and developed. Electrostatic force is used for metering the
small seeds. Pickup points , made of ebonite are fixed on a rotating wheel. The
rotating wheel gets power from a driving wheel through chain - sprocket
transmission. Hill to hill spacing can be varied by varying the number of pickup
points on the rotating wheel . The pickup points rub against a woolen piece of
cloth and get a small amount of electrostatic charge. This charge picks up 1-4
seeds from a seed hopper and seeds are released into the delivery funnel by a
scraper and pass through the seed tube into the furrow. The furrow is covered and
pressed by the press wheel behind the metering device .
This planter was tested in the laboratory as well as in the field to
evaluate performance and accuracy. Seed rate is very low -jute 0 . 36 kg I ha,
brinjal 0.88 kg I ha and chilli 0 .50 kg I ha (at hill spacing of 30 cm.). Field
capacity is 0.077 ha/hr, with average velocity 0.5 m I s and field efficiency
89.80 percent . Average total power requirement is about 30 W, consisting of 23
W rolling resistance of driving wheel and press-wheel, and 7 W to pull the shoe
type furrow opener. Average slip is about 11 percent .
Total price of this planter is about Raht. 3300, with Baht. 2300 for
materials and Baht 1000 for fabrication. Total cost to plant jute seeds by this
planter is about Baht 316.00 per hectare including cost of seeds. |
| Year | 1990 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Other Field of Studies (No Department) |
| Academic Program/FoS | Agricultural and Food Engineering (AE) |
| Chairperson(s) | Gupta, Chandra P.
|
| Examination Committee(s) | Singh, Gajendra ;Nielsen, Jens Moller ;Salokhe, Vilas M
|
| Scholarship Donor(s) | The Royal Government of Netherlands |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |