How to Prevent Poa Annua Germinating on Golf Course Tees and Fairways

Prevent poa annua germinating with Pennant Magnum.

This is a key time for Poa Annua germination so get your preventative applications down before IT'S TOO LATE!

Symptoms:

Poa is a low growing tufted annual weed grass with a light green-yellow colour. Both sides of the leaf blade are smooth with two clear lines on each side of the mid rib. Leaf tips may be keeled or boat shaped. Vernation is folded and ligules are membranous. Poa forms dense fibrous root. Seed heads are clustered and green to whitish.

Life Cycle

Poa is an annual that germinates in autumn when soil temperatures fall below 21°C for consecutive days and when there is adequate moisture and light. Perennial biotypes have been observed and are associated with a darker colour and more prostrate growth. Poa can form significant seed banks with the potential to produce up to 2,577 viable seeds per square metre in the upper layers of soil.

Application Tips:

Apply Pennant Magnum when soil temp reaches 16° Celsius and do a follow up application 4-6 weeks later to prevent annual grasses like Goosegrass and Crabgrass.
Apply to Kikuyu, Bermuda (Cynodon/Kweek) and Paspalum in March to prevent Poa Annua germinating
Flower beds - apply to your weeded flower beds to prevent germination of many weeds and annual grasses.

When soil temperatures reach 16°C Poa annua start to germinate.

Take preventative measures by applying 2 L/ha Pennant Magnum and follow up 21 days later.

Important notes: