[NJ88]

What is the suggested method to control poa annua this fall using no more than one half of the yearly limit of Tenacity ? I had some poa annua invasion this past spring and it was a nuisance to hand pull seedheads every other day.

Can it be used in addition to a fall application of pre emergent ?

 

[g-man]

NJ88

For poa annua I use tenacity at a 2oz/acre rate in spot treatments around once a week. Normally Poa annua dies in the summer heat. This year was cooler and rainy, and some of the ones I had survive. The fall preM is the key to prevent an infestation next year.

Yes, you could do this in addition to PreM.

 

[ABC123]

have you considered a PGR to suppress annual seed heads? Works on white clover too.

I'd imagine it would help the battle be more successful. Even some studies recommend it before seed down to suppress it