Abstract
Vanes used in rotary fertilizer spreaders can be straight, curved, or composite-shaped. No information was found in the literature on the effect of different vane shapes on fertilizer distribution uniformity. In this study, the effect of different vane shapes on the fertilizer distribution uniformity in single-disc rotary fertilizer spreaders was investigated using triple superphosphate and calcium ammonium nitrate. The vane shapes used in the study were straight, composite, forward-curved-5, forward-curved-10, back-curved-5, and back-curved-10. The results of the study showed that the shape of vane had a significant effect on fertilizer distribution uniformity. The straight vane shape, the most commonly used, did not give the best fertilizer distribution uniformity. The best fertilizer distribution uniformity was obtained from the forward-curved-5 vane shape for both triple superphosphate and calcium ammonium nitrate.
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