True or False: Devrinol 50-DF ornamental applications should be scheduled to benefit from rainfall if irrigation is unavailable.

Scheduling Devrinol 50-DF applications to coincide with rainfall is beneficial when irrigation is unavailable because rainfall helps to activate the herbicide in the soil. Devrinol works as a pre-emergent herbicide, targeting weeds before they germinate. For it to be effective, it must be properly incorporated into the soil. Rainfall provides the necessary moisture to dissolve the product and move it into the top layer of soil, ensuring that the chemical can reach weed seeds and prevent their growth.

When applying pre-emergent herbicides like Devrinol, timing is crucial, and leveraging natural rain can enhance the product's efficacy. If this rainfall does not occur, the effectiveness of the application can be diminished because the herbicide may not be properly activated or could remain on the surface, where it does not provide the intended weed control. This approach is generally more effective as it optimizes the herbicide's potential. Therefore, aligning applications with anticipated rainfall, when possible, is a recommended practice.