How many applications of Devrinol 50-DF Ornamental for annual weeds should be made per season in field-grown bulbs?

Devrinol 50-DF is a pre-emergent herbicide primarily used for controlling annual weeds in ornamental plants and field-grown bulbs. The recommendation for applying Devrinol is to conduct one application per season. This is because pre-emergent herbicides function by creating a barrier in the soil that prevents weed seeds from germinating. One application is typically sufficient to provide the necessary length of control, especially in scenarios where bulb growth does not require multiple applications.

The timing of this application is crucial as it should ideally occur before the target weeds begin to germinate, ensuring that the herbicide effectively suppresses their emergence throughout the growing season. Overapplication may not provide additional benefits and can potentially lead to issues such as phytotoxicity, adversely affecting the bulbs and surrounding ornamental plants. Therefore, understanding the timing and application frequency is pivotal for effective weed management in bulb cultivation.