Tillage Factors Affecting Corn Seed Spacing

Abstract

ABSTRACT AN on-farm survey was conducted in Nebraska to determine factors affecting corn seed spacing unifor-mity. Statistical analysis indicated that relative surface roughness, amount of residue present, amount of preplant tillage, and tillage system were important fac-tors affecting uiformity. Subsequently, replicated tillage plots at eight locations were used to evaluate seed spac-ing uniformity with different planters and tillage systems. Seed spacing coefficient of variation and a planter index developed showed conservation tillage does not significantly reduce seed spacing uniformity.