Abstract

The ability of tillage implements to maintain surface residue coverage is largely dependent on the implementsmain active component. Two categories of tillage implements were compared to determine their ability to maintain grainsorghum (nonfragile) surface residue coverage when operating at two different tillage depths for fall and spring tillage.Chiseltype implements were found to bury substantially less crop residue than disktype implements. Disktype implementswere found to bury increased amounts of crop residue when operating at deeper tillage depths. Fall and spring tillage werealso found to leave equivalent amounts of percent residue cover and total mass of crop residue remaining on the soil surface.A more thorough understanding of the ability of tillage implements to maintain adequate amounts of surface residue coverageshould enable producers to select appropriate implements to maximize production while minimizing erosion.

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