Active Ingredient - the chemical in a formulated product that is responsible for the herbicide effects. Adjuvant - an ingredient added to a herbicide formulation or spray mixture to aid or modify the action of the herbicide, or the physical characteristics of the mixture. Amine - acid or anionic herbicides can be formulated as ammonium salts or amines.
Summer annuals complete their life cycle between spring and fall.
Winter annuals germinate in fall, overwinter and then flower and complete their life cycle the following spring or summer. Germinates in the spring, overwinters, flowers the following spring or summer and dies back the following fall. Compatible - compounds or formulations that can be mixed and applied together without undesirably altering their separate effects effects or the physical properties of the mixture. Contact Chemicals - chemicals that kill only the parts of the plant on which they are sprayed. Movement within the plant is minimal.