A bed with a duvet. A duvet (/ËdjuËveÉª/, /ËduËveÉª/, or US /duËËveÉª/; from the French duvet [dyvÉ] down) is a type of bedding consisting of a soft flat bag filled with down, feathers, wool, silk or a synthetic alternative, and typically protected with a removable cover, analogous to a pillow and pillow case.
ALS Inhibitors. ALS Inhibitors are a family of herbicides. Herbicides that inhibit acetolactate synthase (ALS), the enzyme common to the biosynthesis of the branch-chain amino acids (valine, leucine, and isoleucine), affect many species of higher plants as well as bacteria, fungi, yeasts, and algae.
Nonselective herbicides kill all vegetation (including turfgrasses) and are used in lawn renovation or on weeds not controlled by selective herbicides. Herbicides can be further divided into preemergence and postemergence categories. Preemergence herbicides are applied prior to germination and emergence of weeds. These are typically used for controlling annual weeds. Postemergence herbicides are used for controlling weeds that have already emerged from the soil. They are either contact or systemic in nature.