The objective of this study was to verify systems performance of developed variable rate spinner disc fertilizer applicator (PreFer) which allows applying of granular fertilizer at variable rates in field conditions. Distribution uniformity and accuracy were assessed using a matrix of collection pans and following test procedures outlined in ASAE Standard S341.2. Spread patterns were produced in triangular shape which is favorable in overlapping process. But it was seen that, triangular shapes are
differed due to fertilizer types. The performance of system as found by overlapping transverse spread patterns resulted in a CV of 11% with a 10 m working width in calcium ammonium fertilizer application while the CV and working width for composite fertilizer were 20% and 9 m, respectively. It is clear that working width, and so cell width, was limited by spread width of machine and the CV value while applying different types of fertilizer.
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Author Name: Arif Behic Tekin, Kamil Okyay Syndyr
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Keywords: Precision agriculture, spinner disc fertilizer spreader, variable rate fertilizer application, performance assessment
ISSN: 0554-5587
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