Definition

1. Noun:
   • A herbicide used to control weeds (especially among crops): Simazine is a chemical compound belonging to the triazine class, used primarily in agriculture to prevent the growth of unwanted plants, particularly broadleaf and grassy weeds, in crops and non-crop areas.

Usage Examples

• Noun:
  • The farmer applied simazine to the cornfield for pre-emergent weed control.
  • Simazine is effective for managing weeds in orchards and vineyards.
  • Due to its persistence, the use of simazine is regulated in some regions.

Advanced Usage

• "Simazine resistance": Refers to the evolved ability of certain weed populations to survive application of the herbicide.

  • The emergence of simazine resistance has complicated weed management strategies.

• "Simazine degradation": The breakdown of the herbicide by microbial or chemical processes in the soil.

  • Soil pH and organic matter content affect the rate of simazine degradation.

Variants and Related Words

• Herbicide (n): A general term for a substance used to destroy or inhibit plant growth. Simazine is a specific type of herbicide.
• Triazine (n): The class of organic chemical compounds to which simazine belongs. Other triazine herbicides include atrazine and propazine.

Synonyms

• Weedkiller: A more general, informal term for a herbicide.
• Pre-emergent herbicide: Describes a herbicide, like simazine, that is applied to prevent weed seeds from germinating.

Related Terms and Contexts

• "Residual activity": The period during which a herbicide like simazine remains active in the soil.

  • Simazine has long residual activity, providing season-long control.

• "Non-selective" vs. "Selective": While simazine is often used in specific crops where it exhibits some selectivity, it can be toxic to a wide range of plant species if not used as directed.

Noun

1. a herbicide used to control weeds (especially among crops)