Click on “Download PDF” for the PDF version or on the title for the HTML version.
If you are not an ASABE member or if your employer has not arranged for access to the full-text, Click here for options.
SPREADER DAMAGE TO ENCAPSULATED CONTROLLED-RELEASE FERTILIZER GRANULES
Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan www.asabe.orgCitation: Paper number 011124, 2001 ASAE Annual Meeting. (doi: 10.13031/2013.3968) @2001
Authors: Richard L. Parish
Keywords: spreader, granules, fertilizer, controlled-release fertilizer
Coated controlled-release fertilizer granules can be damaged when applied by fertilizer spreaders. Physical damage to the coated granules can change the release rate of the nitrogen since the damaged coating will allow water to pass through the coating and dissolve the nitrogen. Six controlled-release nitrogen fertilizers and a mixed fertilizer containing controlled-release nitrogen granules were applied with six spreaders and samples of the applied products were tested for coating damage. There were highly significant differences in the amount of damage caused by different spreaders. Nominal release rate had a significant effect on amount of damage, with the longer release rates (i.e. thicker coatings) having less damage. Even the highest damage levels to the nitrogen products were under 10%, thus observable differences in crop response are unlikely.(Download PDF) (Export to EndNotes)