View Full Version : C3 Poa triv control coming?

07-28-2002, 11:11 AM
Testing has been underway on a new selective control in C3 grasses for annual bluegrass, poa triv, quackgrass and yellow nutsedge. Wouldn't that be a great product?

Not named yet, known as MON 44951, and won't be out until 2004 at earliest. Testing on bentgrass so far has gotten 70% reduction of poa triv, without unacceptable phyto to bent. Needs multiple apps, and timing and # of apps is still being worked out.

Purdue also testing TranXit 25 DF on C3 turf. This is a selective P. annua and P. trivialis control used on C4 turf now.

07-28-2002, 02:10 PM
jim: thanks for the post;;;;
i hope so.
it seems that all the lawns that i seeded last fall developed patches of pao triv.
same seed same lot.

what is C3 grasses?

07-29-2002, 01:06 AM
C3 = cool season (northern USA) grasses

C4 = warm season (southern USA) grasses

Easier to say and type C3 or C4, instead of cool season or warm season all the time.

agrostis palustris
08-02-2002, 02:22 AM
It has to do with the photosynthetic systems employed by each type of grass. Warm season grasses use both C4 and C3 PSN. Cool season grasses only use C3 PSN.