What is in this article?:
- Resistant Weeds Drive Tillage | A Rebound in Tilled Corn Acres May Spread
- Tillage Commandments
Don Schriefer was a pioneer in innovative work with tillage systems and was considered one of America’s first “environmental agronomists.” He established six “tillage commandments” as a foundation to guide tillage decisions (published posthumously in Agriculture in Transition, Acres USA, 2000). They seem to still hold true today.
- A tillage system must not place limits upon crop yields.
- A tillage system must address the problems of spring compaction, with the ultimate goal of eliminating most spring preplant operations.
- A tillage system must guarantee a conditioned seedbed that will provide the environment for a good start, rapid root expansion, and uniform emergence and stands every year.
- A tillage system must directly or indirectly manage soil aeration, soil water and crop residue in a manner that will nurture soil life and conserve and build the soil system.
- Every tillage operation within the tillage system must be done with the purpose of removing one or more yield-limiting factors.
- A tillage system must address the potential problem of nutrient stratification and prevent this condition from becoming yield-limiting.