02-17-2011, 11:37 PM
Sorry to keep you guys waiting, but this is the first chance to sit down in front of the pc. I listened to the rep do his pitch to the whole room, and had a chance to ask him a few questions later. The following is the info I found out:
Residual: The residual seems pretty good. The graphs showed ground ivy, dandies, and violet near 100% control after 90 days. The soil activity is limited to the top 1/2"-1" of soil. This soil activity helps the imprelis on fertilizer results as well.
Root uptake: The soil activity is limited to the top 1/2"-1" of soil. Yes, he said it could be an issue. He was more concerned about that happening with imprelis on fertilizer and stray granules going into planting beds. It is not to be used in planting beds. Trees in turf areas will not be affected. I asked him about trees with exposed roots (silver maples) and he said that it won't affect them any more than typical herbicides.
Solubility: Is soluble in water. The herbicide itself is dark brown, the solution is clear as you don't add enough concentrate to change the color of the h20. The product doesn't move in the soil very much. At the University of Illinois they applied to the test plot, and soon after experienced heavy rains to the point the plot had standing water on them. They still got a very good kill on weeds and one researcher noted how well the product stayed put even after the flooding rains.
Volatility: There is no temperature restrictions as the product is considered non-volatile. Also has low to no odor.
Other notes: Death of the weed looks like conventional herbicides. 3-4.5 oz/acre use rate. Struggles with killing oxalis. Grasses showed tolerance up to 4 times the label rate. Safe to use on all cool season grasses except bent. Sorry warm season guys, not sure about you. No seeding restrictions for cool season turf, no irrigation or rain restrictions, no mowing restrictions.
The bad: The only negative about the product as far as I can see is the grass clipping management. You have to inform the customer not to use treated turf clippings for mulch or compost. I asked the rep about composting for a year or two. He didn't have an answer, but said he would check into it and let me know. Bagging clippings in June and spreading them around tomatoes will give you dead plants or watermelon size tomatoes. Hard to say which.
Overall, it seems like a great new herbicide to use on commercial properties and full maintenance clients. It will be interesting to see if it stays longer than clopyralid. That is the one thing that concerns me. I'm no expert but that is my take. Any questions you have you can ask and I see if I can recall the answer.
All I can say is wow. Guess alot has changed.
Have to wonder if I'll have any grass.