A preemergent herbicide should be applied to fields when seedlings are at least six inches high.

Name: A preemergent herbicide should be applied to fields when seedlings are at least six inches high.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

A preemergent herbicide should be applied before the weed seeds germinate, not after the seedlings have already grown to six inches high. This allows the herbicide to create a barrier in the soil to prevent weed seeds from germinating, rather than killing already established weeds.

A Preemergent Herbicide Should Be Applied to Fields When Seedlings