Herbicide Application

Question 1

Spray Summer Annuals

Answer 1

As seedlings in spring or summer

Question 2

Spray Winter annuals

Answer 2

As seedlings or rosettes in fall or early spring

Question 3

Spray Biennials

Answer 3

As rosettes or other growth in fall or early spring

Question 4

Spray Perennials

Answer 4

During vigorous fall growth or bud stage in spring or summer

Question 5

Pre-Emergence Performance

Answer 5

• Amount of rainfall or irrigation (0.5in light rain)
• Herbicide solubility
  
  • higher solubility reacts faster with light rain
• Hericide adsorbed onto soil
  
  • Herbicide chemistry (negative wont bind soil, positive and will bind soil)
  • Soil Texture
  • Organic Matter