Definition of diastereomer. : a stereoisomer of a compound having two or more chiral centers that is not a mirror image of another stereoisomer of the same compound â compare enantiomer.
Most perennial weeds such as Johnsongrass. are also suppressed although vigorous plants or heavy in-. festations may lift plastic. Perennial sedges, and to a lesser. extent, grasses can puncture sheet mulches as the weeds. emerge from the soil, resulting in inadequate control.
Polyethylene comes in a variety of densities, poly sheeting is commonly made from a low-density polyethylene. The low density poly material promotes durability and flexibility in our poly sheeting. It is often used as vapor barriers in construction, for drop cloths, tarps, as well as lining for a variety of projects.