Mathematical modelling of vacuum pressure on a precision seeder

Karayel D., Barut Z., Ozmerzi A.

BIOSYSTEMS ENGINEERING, vol.87, no.4, pp.437-444, 2004 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 87 Issue: 4
  • Publication Date: 2004
  • Doi Number: 10.1016/j.biosystemseng.2004.01.011
  • Page Numbers: pp.437-444


The purpose of this research was to determine the optimum vacuum pressure of a precision vacuum seeder and to develop mathematical models by using some physical properties of seeds such as one thousand kernel mass, projected area, sphericity and kernel density. Maize, cotton, soya bean, watermelon, melon, cucumber, sugarbeet and onion seeds were used in laboratory tests. One thousand kernel mass, projected area, sphericity and kernel density of seeds varied from 4.3 to 372.5 g, 5-77 mm(2), 38.4-85.8% and 440-1310kg m(-3) respectively. The optimum vacuum pressure was determined as 4.0 kPa for maize I and II; 3-0 kPa for cotton, soya bean and watermelon I; 2.5 kPa for watermelon II, melon and cucumber; 2.0 kPa for sugarbeet; and 1.5 kPa for onion seeds.