A 4-row pre-germinated rice Seeder attached to 7 hp-walking tractor was driven by a ground wheel. The row spacing is 25 centimeters. It composted of five parts as
1) hoppers can be filled pre-germinated rice of 2.8 kilograms
2) seed metering device was used 4 seed drums , 16 centimeters diameter and 8 holes for each drum
3) seed tubes, transparency plastic tubes were 2.5 centimeters diameter and 30 centimeters length
4) a ground wheel perimeter was 1 meter
5) transmission system was chain and gears.
The important factor in this test is days for coating rice, coated 1 day and 2 days. The result of test was shown that the 4-row pre-germinated rice seeder was suitable for 2 days coating rice. Number of seeds per hole was 4.43. Percentage of broken seeds was 3.52. Percentage loss of germinated seeds was 10.66. Scattering distance ratio was 17.95 and seed rate was 4.08 kilograms per rai.
By
Pathawee Puyati
Sumavalee Chotimakorn
