Corn Seed Spacing Uniformity as Affected by Seed Tube Condition

Abstract

Variation in corn seed spacing from a John Deere MaxEmerge Plus Vacumeter planter was evaluated on the University of Nebraska Planter Test Stand in a laboratory setting for two seed tube conditions (new or worn) with two examples of corn seed shape (round or flat). Seed spacing uniformity was measured using three seed spacing uniformity parameters: Coefficient of Precision (CP3), ISO Multiples index, and ISO Miss index.