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Salvania

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This picture is of a pond on our lease with Salvania in it.
This stuff showed up 3 years ago that we noticed. It was there one weekend and all drained through water control a few weeks later.

Last year it took over 1/2 the open water on our lease.

This year it has gotten about 3/4 so far.

I have never seem something like this before. We poison, put weevils, push some with homemade rakes hooked to boats and the little we do either is not fast enough or short lived. I mean it was on the lease next to us one year, then ours the next then 5 or 6 leases around area now. You can go one weekend and have a pad of this floating in a pond and go back 3 weeks later and the pond will be slap full.

Just Depressing to see this take over. OH and last year it seemed if you had this in even just 1/4 of the pond, the ducks would pass and circle and circle and leave.
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   jjoojj
Terrible - We are in the same situation. Unfortunately, I think the only thing that would clear this stuff out is a flush out - (hurricane)

We've spent soo much money on poison - put literally tons of weevles out, yet still, late September through October, this stuff multiplies at rate that can't be stopped by either.
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Sorry to hear that we had the same problem at a lease in Hammond. We also tried weevil's and it seemed to be doing the trick but two years ago it got so cold it killed them. We also tried crop dusting but some of the salvinia was trapped under the lilly pads and survived. Really the only way to get rid of it is to have a storm blow it out.
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no expert for sure, but this is what I found on the internet and we know you cant lie on the internet!!! don't know what kind of poison yall use, but it said, FLURIDON works great, but it has to stay on the plant a long time. if it rains r gets wet to soon it delutes the poison and wont work! they said HEXAZINONE, DIQUAT AND DOUBLE-CHELATED COPPER MIXED TOGETHER, works, but didn't say how to mix it! maybe call your local agricultural agent for ideas!!! good luck!! let us know if u find an answer that works please!!
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   By U Boy
I use 2-4d Amine 4 you can by it on-line (2.5gals) and have it delivered to your house.

We mix it using a 15gal. sprayer using 80oz. of 2-4d right before tank is full about 3/4 we add 3-16oz. bottles of Dawn dish soap fill the tank the rest of the way. Make sure to spray on a good sunny day with no rain forecasted.

The Dawn dish soap serves as a sticking agent which will help chemical stick to the salvania, water lilies, etc.

This works best for us, if y'all hadn't tried it yet.

With 2.5gals of 2-4d you can spray 4 - 15gal. tanks of mixture.
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Yea, it seems the only way is as you mentioned about a storm killing it.

Everything we try is slower than the rate it grows.

This will be 2nd year we put weevils so hopefully it helps more.
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I had this Salvania in 2 crawfish ponds for a few years in a row. The ponds are 5 acres each. We did the same thing with rakes on boats, overlfowing the levee, breaking the levee and letting it flush out. We could never seem to get it all out, and the little bit that we did not remove filled the ponds back up completely within 1 month. In early summer we drain our ponds completely and most of it dries up and dies, but the little bit of water that remains in a ditch in the back of our ponds would keep some salvania alive and in the fall when we fill the ponds with water, the salvania would start to grow until it filled the ponds completely. I did some internet research and contacted my local agricultural store and we purchased 1 gallon of a chemical called Avast SC. The reason alot of other common aquatic chemicals are not effective is because salvania has a hair-like material that repels chemicals from getting to the base of the plant. We have gone 2 years now salvania free and still have a 1/2 gallon left to spot spray if we see the first signs of salvania. The only downfall of this chemical is that is cost us around $1600 for the gallon a couple of years ago. Very very pricy, but it worked. A couple of internet sites have it now for around $2000 for a gallon. It would not be economical to spray a whole pond, but if you pump your pond out and dry it completely and spray what salvania still exists in the wet spots and areas that hold water you may be able to get rid of it. Good luck, salvania has become a nuisance in South Louisiana.
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   jjoojj
We use diquat mixed with round-up and a cutting agent. It works, but it is very expensive and you would literally have to spray everyday to keep up with the rate at which this stuff grows. It's crazy, every year going into teal season, the ponds are fine, but by the end of September, through early October, this stuff grows at a uncontrollable rate. Just have to hope for early cold spells to stop the growth. It is a terrible. But, what's becoming equally as much of an issue for us is apple snails. They are wiping out our aquatic vegetation. I don't know what to do to stop those things.
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Talked to some people one time that spray out in the Atchafalaya area. They say Salvinia is the most difficult to get rid of. Personally, i think spraying for it is just a waste of time and money. Let mother nature run the course.
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I don't understand you guys sometime....
One minute you complain about erosion...
The next you want to kill off the veg...
Any veg is better than no veg... Especially if you just want it gone to kill a duck....
Just sayin
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Salvinia and hyacinth will fill in a a wetland eventually. They fill up a canal or waterbody and then larger plants grow on top of the mat and eventually they take root. So technically it is creating land.

What IF this is a way of nature trying to heal itself from the scars we have put on her? Those canals and ponds we have dug are filling up with this stuff and its trying to revert back to land?

Deep thoughts
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Well it kills all the vegetation under it, all fish leave area or die if they cant leave being it sucks all the oxygen out the water, and it plugs drainage canals. So maybe there is something good about it as mentioned, I just haven't seen that benefit yet. but we are all entitled to our opinion.
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   vineytree
The only good thing that ever came from Brazil is the BUTT LIFT.

Gutter Thoughts
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