Clearing willows question

[Bercy]

What is the best process of getting rid of some willow trees that are too big to bushog?

I have a couple different locations with willows - (1) in a fishing pond - the willows are growing where tributaries are slowly filling in the back of the pond (where water used to be); and (2) in a duck hunting area/field - some are growing on levies and some are growing up in areas where water will be for ducks (want to keep some for cover, but make sure they don't take over).

Cut/chainsaw (but will they just grow again); cut/chainsaw and then poison; cut in winter; poison only? Can you leave them where they fall or do you need to pile and burn them? What's the best way to keep them under control afterwards (pond and hunting area) - bushog/till/flood?

Thanks.

(edited to add more info)

[pondman]

How big an area? How accesible? Budget??

Pond

[fivemile]

Chemicals like Round-up will take them out, but it may be too late to use chemicals this year. Check with chemical salesman. Be prepared for other willow to take their place in a few years.

[Wingman]

Roundup + Clarity right now, before frost, while tree is taking down nutrients to the roots for the winter.

Now is the perfect time to spray them.

[Soybean Man]

I took a Cat tractor and disc and layed over 10 acres of willows this summer in a fish pond. I only layed over about 10 feet at a time with a 27 foot disc. Eventually I ran over the trees several times and have since leveled the pond. Most trees were 15-20 feet tall and no bigger around than 4 inches.

[waterbug]

If you have the time, put some beavers on it, once their hut is built blow it and the damn they build, then keep blowing it until all your willows are down. This does not involve much work on your part.

[Double R 2]

Picloram. Injected, sprayed, and stump application; foliar and soil active.