Developing a vertical wheel devices for small seeds [electronic resource].

Includes references.

The effect of iour forward speeds (V) of 0.75, 1.03, 1.3 and 1.5 mls and frve metering speeds (R) of 0.09,0.16,0.20,0.25 and 0.30 mls with two disc cells (W) of 9 and 24 and their interaction were studied to evaluate metering process throughout planting sugar beet. Engineering parameters such as longitudinal and transversal dispersion, % were determined. Seed damage. % with distance between seeds were also evaluated. Actual distances ranged from 17.7 em to 11.85 em, the theoretical distances ranged from 69.4 to 10.4 em. Under forward speed of 0,75, the best results were obtained by using metering speed of 0.16 mls. The theoretical distance was 19.5 em and the actual distance was 16.9 em.. Lowest lateral dispersion of 40.2 % was obtained under the same previous conditions with disc cells of 24. for sugar beet. Lowest seed damage of 2.88 %was under the mentioned conditions.

Summary in Arabic.

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