The timing of herbicide application before weed emergence is critical for effective control. These herbicides form a barrier in the soil that prevents weed seeds from germinating, thereby inhibiting their growth. A common example is applying a dinitroaniline herbicide to a lawn in early spring to prevent crabgrass germination.
Optimal timing prevents weed infestations, leading to healthier plants and reduced labor costs associated with manual weeding or post-emergent herbicide applications. Historically, farmers and groundskeepers relied on calendar dates; now, soil temperatures are a more accurate indicator, minimizing the risk of premature or delayed applications and maximizing effectiveness.
