Image Number: 0010015

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Descriptor:
Application
Description:
Chemical herbicides are immediately applied to the sown seedbeds. These "pre-emergence" herbicides selectively kill the germinating weeds but do not harm the tree seedlings. If weeds become a serious problem later in the growing season, then a "post-emergence" herbicide is sometimes applied over the top of the seedlings. Unfortunately, not all weeds can be controlled with herbicides so nursery workers must remove them by hand-weeding.
Image type:
Field

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Image location:
United States

Subject

Kingdom: Agrochemicals
Phylum: Herbicides
Class: Conventional Herbicides
Order: General herbicides
Family: General Herbicides
Subject: herbicides (general)
Node Affiliation:
Image uploaded:
Monday, January 1, 1990
Image last updated:
Tuesday, August 2, 2011