Water Hyacinth and Other Invasives

[malliegator]

Salvania is what we are fighting and we are losing the battle. So thick in some places a shallow drive struggles to get through it. Even the alligators have left the heavily infested ponds and boat trails.

[meat killer 86]

Originally Posted by malliegator

Salvania is what we are fighting and we are losing the battle. So thick in some places a shallow drive struggles to get through it. Even the alligators have left the heavily infested ponds and boat trails.

Get a good gas sprayer with an agitator on it and spray pelletized karmex. Will kill everything in its path. It's deadly to all plants.

[BGcoreg]

Originally Posted by malliegator

Salvania is what we are fighting and we are losing the battle. So thick in some places a shallow drive struggles to get through it. Even the alligators have left the heavily infested ponds and boat trails.

Same here, but we are seeing a lot of dead spots and some spots are clearing up.. Weevils were placed just north of us and they are working in certain areas. With all this rain I'm not sure what will happen now


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[Cmk07c]

Originally Posted by BGcoreg

Same here, but we are seeing a lot of dead spots and some spots are clearing up.. Weevils were placed just north of us and they are working in certain areas. With all this rain I'm not sure what will happen now


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BG did yall look at adding or getting any for your area? To kind of supplement the ones working their way in?

Anyone know if they have a similar creature for hyacinth and other invasive plants we in south deal with? From what I understand there is giant salvania and just regular, the weevil we currently have only eats one type of salvania. This is why there isn't eradication. Places like maurerpas swamp can't get a grip on their problem because it's a split invasion of reg and giant salvania.

[BGcoreg]

Originally Posted by Cmk07c

BG did yall look at adding or getting any for your area? To kind of supplement the ones working their way in?

Anyone know if they have a similar creature for hyacinth and other invasive plants we in south deal with? From what I understand there is giant salvania and just regular, the weevil we currently have only eats one type of salvania. This is why there isn't eradication. Places like maurerpas swamp can't get a grip on their problem because it's a split invasion of reg and giant salvania.

I've called so many people and got some help just not a whole lot.. LSU Ag , Texas a&m, caddo lake restoration folks, and I was told they wouldn't give weevils to the general public. They were going to state and fed lands first. LSU Ag gave me coordinates to where they released some and they said you can scoop up a bunch in 5 gallon buckets hoping you caught some and then bring it to your site. But that site was too far from us to travel and get lucky to scoop some up ..

Thankfully Miami Corp decided to get on board and there property borders ours and so we had a good chance of the weevils moving onto our property. We did assist them in spreading a little faster as in scooping up salvinia with weevils and moving it to directly in front of our duck blinds

And hopefully we only have 1 type of salvinia. I've never thought about it like that

[Duck Butter]

Originally Posted by Cmk07c

BG did yall look at adding or getting any for your area? To kind of supplement the ones working their way in?

Anyone know if they have a similar creature for hyacinth and other invasive plants we in south deal with? From what I understand there is giant salvania and just regular, the weevil we currently have only eats one type of salvania. This is why there isn't eradication. Places like maurerpas swamp can't get a grip on their problem because it's a split invasion of reg and giant salvania.

It has now been determined that the weevils are the same species for both common and giant salvinia. success is highly variable but there have been some real success stories. We had some put out in a lake with common salvinia. The biologist brought some giant salvinia that had weevils in it. We wouldn't accept that because didn't want to introduce giant salvinia. Later got some weevils with the common salvinia and placed those out. This was a year with a very hard freeze and it knocked the salvinia way way back (likely killed the weevils as well). The following summer it was like nothing has happened as it was everywhere. Have had the same luck with spraying it. Can knock it way back but if you do not get very but if it (which is almost impossible if you have a lot of vegetation on the banks or if you don't have a way to block it from coming in from adjacent areas) it comes right back.

As far as hyacinth biological control there is another weevil they have used in Florida with some success but haven't heard much about it in Louisiana. It seems like all the weevils are very host specific and will not feed on much else but you have to be real careful with introducing another non native to combat a non native also. McIlhenny brought in the nutria to control alligator weed and water hyacinth way back when. They escaped and now look at them.