I hope everyone has had (or is having!) a good harvest season. I've been around to a few bogs and have to say that size and colour was looking pretty good even if overall yields were a little lower than last year! (now if only we could do something about that price!!!!).
I've been hearing some reports of grass problems in cranberry bogs (new and established) and I am happy to let you know that you now have access to a new herbicide that will finally control some of those grasses that have been difficult to control in cranberries. Centurion (active ingredient: clethodim) has now been registered! Here are few pieces of pertinent information from the label:
Cranberry is tolerant to CENTURION at all stages of growth, however do not apply CENTURION between the hook stage and full fruit set.
| CRANBERRY | Labelled grassy weeds. Refer to weed/rate chart in this label. | Application Rate: 0.19 – 0.38 L/ha | Application Rate of Amigo (adjuvent) 0.5 – 1.0 % v/v | TIME OF APPLICATION: Apply CENTURION post-emergence of weeds and crop. Do not apply between the hook stage and full fruit set. Apply a maximum of one application per year using ground equipment. Apply in a minimum spray volume of 110 litres of water per hectare. Observe a PHI of 30 days. Ground application only. |
APPLICATION RATES OF CENTURION:
Rates of use are given below to control various grass species. Refer to crop section for the maximum use rate on each crop.
Application Application
Leaf Rate of Rate of
Grass Species Stage CENTURION® AMIGO® Adjuvant
*Foxtail (green, yellow) 2-4 0.125 L/ha 0.5% v/v
Wild oats
Volunteer cereals
(wheat, barley, oats)
Barnyard Grass 2-6 0.125 L/ha 0.5% v/v
Witchgrass
Fall panicum
Proso millet
Volunteer Corn
Volunteer canary grass
Wild Oats 2-6 0.19 L/ha 0.5% v/v
Volunteer cereals
(wheat, barley, oats)
Foxtail (green, yellow)
Persian darnel
Crabgrass (smooth and large)
Proso millet
Witchgrass
Fall panicum
Barnyard grass
Volunteer corn
Volunteer canary grass
Quackgrass suppression
Quackgrass control** 2-6 0.38 L/ha 1.0% v/v
* CENTURION applied at 0.125 L/ha for the control of weeds listed in this section of the table should only be applied under the following conditions:
· Good crop stand
· Early application (as in above table, prior to tillering)
· Do not tank-mix with other pesticides
· Do not apply to volunteer winter cereals
· Light to moderate weed infestation
· Adequate moisture and fertility
· Absence of stress, good growing conditions
If any one of the above conditions are not present at the time of application, use 0.19 L/ha rate of CENTURION.