The Tropical Fruit Forum

Tropical Fruit => Tropical Fruit Discussion => Topic started by: Carlincool on November 27, 2012, 09:21:49 AM

Title: Asian grey weevil
Post by: Carlincool on November 27, 2012, 09:21:49 AM

Hi,
Has anyone found something that controls Sri-lankan aka Asian grey weevil?  They are not as bad as last year, but I still see them. They have been chomping on my mangoes, soursops, etc.  I put down some benifical nematodes this year, but I'm still having problems. I have done a lot of research on these weevils and have found no control.
Thanks in advance!
Kevin

Title: Re: Asian grey weevil
Post by: bangkok on November 27, 2012, 09:31:55 AM

(http://s14.postimage.org/q5sl7knct/greyweevil.jpg) (http://postimage.org/image/q5sl7knct/)

Title: Re: Asian grey weevil
Post by: bsbullie on November 27, 2012, 10:27:13 AM

You have to eliminate their grub stage to rid the weevils.  A godd drenching with commercial grade Imidacloprid should do the trick.  I know there are a lot who do not like the use of such chemicals but sometimes there is no option...and since nematodes have been tried, chemicals may be the only option (barring trying a different type of nematode).

Title: Re: Asian grey weevil
Post by: bangkok on November 27, 2012, 06:55:40 PM

I dont know the size of them but i want to try fine plastic mesh over the mulch to prevent from weevils. They sell that in black color and maybe it can lock them up in the soil. If you have a huge yard with mulch then this would be an option i guess.

Title: Re: Asian grey weevil
Post by: FlyingFoxFruits on November 27, 2012, 07:02:00 PM

maybe spraying leaves with something like peppermint oil, neem oil or capsaicin oi, will make them unappetizing to the weevil ?

Title: Re: Asian grey weevil
Post by: jc on November 27, 2012, 08:21:25 PM

Has anyone tried Spinosad?  I just sprayed my new sweetheart lychee. No idea if it will work or not. 

Title: Re: Asian grey weevil
Post by: Carlincool on November 28, 2012, 06:55:23 AM

I tried Spinosad, it did not work.  The benifical Nematodes are helping. I'll need to put more of them down in spring. 
The Spinosad is working on the citrus. It totally stopped all the leaf miners.
Thanks!!

Title: Re: Asian grey weevil
Post by: ofdsurfer on November 28, 2012, 10:19:19 PM

Carlincool

What kind of nematodes are you using?  Where did you get them?

Title: Re: Asian grey weevil
Post by: natsgarden123 on November 29, 2012, 09:22:35 AM

check out the info on florida leaf notchers vs sri lankan weevils- there are some differences in ferocity.
http://idtools.org/id/citrus/pests/factsheet.php?name=Little+leaf+notcher (http://idtools.org/id/citrus/pests/factsheet.php?name=Little+leaf+notcher)

Rob is correct about systemics- the natural stuff does not do much. I am not sure about the nematodes, however ( I am going to try them myself)

Imidacloprid is the only thing which really works. But you don't have to treat the trees if they are doing well- the damage may just be cosmetic.