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Effect of a Seed Tube Modification for Granular Pesticide Application on Corn Seeding Uniformity

Published by the American Society of Agricultural and Biological Engineers, St. Joseph, Michigan

Citation:  2010 Pittsburgh, Pennsylvania, June 20 - June 23, 2010  1009135.(doi:10.13031/2013.29986)
Authors:   Kyle R Bailey, Dennis R Buckmaster, Daniel R Ess
Keywords:   Insecticide, Planter, Seeding, Seed Spacing, Uniformity.

In-furrow application of granular insecticides in corn provides root zone protection against insects including corn root worm, wire worms, cutworms, white grubs and others. Traditional granular application methods dispense a uniform application of pesticide over the entire length of the furrow. A seed-specific granular pesticide application system was developed to decrease the volume of chemical used by metering pesticide into a modified seed tube fitted with a brush to hold granules in the seed tube. As a seed passes through the brush, granules are released and fall into the open furrow near the seed. Modifying seed tubes with a brush introduced the possibility of an effect on seed spacing. Effect of the seed tube modification on seed spacing was evaluated in laboratory and field trials. Lab results showed while average seed speed was significantly (p<0.001) decreased by the seed tube modification, the standard deviation of horizontal seed velocity and the standard deviation of vertical seed velocity were not significantly (p>0.25) affected. Field results showed seed tube modification did not significantly (p>0.25) affect seed spacing.

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