ABSTRACT
Successful conservation tillage systems begin with good preplant weed control programs. The steps for achieving a successful weed control program are problem diagnosis, method evaluation, program selection, and program implementation. The diagnosis phase is probably the most important step when utilizing these tillage systems. Without proper identification of problem weeds, inappropriate weed control programs may be developed and implemented, which may in turn result in less than acceptable weed control and, in some instances, complete crop loss. Producers currently have few options to correct ineffective weed control programs after planting and crop emergence.
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