In field grown nursery stock, how many applications of Devrinol 50-DF ornamental are generally needed for adequate weed control in temperate areas?

In field-grown nursery stock, two applications of Devrinol 50-DF are generally needed for effective weed control in temperate areas. This is because the product functions as a pre-emergent herbicide, meaning it is most effective when applied before the germination of weeds.

The two applications help ensure that the herbicide remains effective through the various stages of weed germination and growth, as well as taking into account the duration of its efficacy, which may diminish over time, especially with factors like rainfall and soil movement. Consequently, by applying it twice, growers can provide a continuous and sustained barrier against weed emergence, improving the overall health and growth potential of the nursery stock.

This approach considers the growth cycles of both the intended plants and the weeds, maximizing the use of Devrinol's active ingredients to provide the necessary protection throughout the growing season.