Does prodiamine prevent poa annua?

Answered by Douglas Hiatt

Prodiamine 65 WDG is an effective herbicide that can be used to prevent the growth of poa annua, also known as annual bluegrass.

Poa annua is a common and troublesome weed that tends to invade lawns, golf courses, sports fields, and other turf areas. It is known for its prolific seeding and ability to quickly spread and take over turfgrass areas. However, with the use of prodiamine, the growth and establishment of poa annua can be significantly suppressed.

Prodiamine works by inhibiting the germination of weed seeds, including poa annua. When applied correctly, it forms a barrier in the soil that prevents the development of weed seedlings. This pre-emergent action means that prodiamine should be applied before the poa annua seeds have a chance to germinate.

Timing is crucial when using prodiamine for poa annua control. It is typically applied in the early spring, prior to the germination of poa annua seeds. This timing allows the herbicide to form a protective barrier in the soil, preventing the seeds from sprouting and establishing themselves. However, it is important to note that prodiamine may also have some post-emergent activity, which can provide additional control of any emerged poa annua plants.

To ensure effective control, it is essential to follow the label instructions and apply the appropriate rate of prodiamine. The recommended application rate may vary depending on the severity of the poa annua infestation and the specific turfgrass species being treated. It is advisable to consult the product label or seek guidance from a professional to determine the correct rate for your specific situation.

It is worth mentioning that while prodiamine can be highly effective in preventing the establishment of poa annua, it may not completely eradicate existing plants. If poa annua has already emerged in your turf, a post-emergent herbicide or other control methods may be necessary to manage the existing plants.

Prodiamine is a valuable tool for preventing the growth and establishment of poa annua. By applying prodiamine in the spring before the seeds germinate, you can create a barrier in the soil that suppresses the growth of poa annua seedlings. However, it is important to follow label instructions and consider other control methods if poa annua has already emerged in your turf.