Tropical Fruit Forum - International Tropical Fruit Growers



Author Topic: Cushiony Cotton scale  (Read 1837 times)

Millet

  • Moderator
  • Hero Member
  • *****
  • Posts: 3247
    • Colorado
    • View Profile
Re: Cushiony Cotton scale
« Reply #25 on: January 19, 2019, 07:41:46 PM »
Brian, wating to hear the out come if you use the 21%.

zephian

  • Sr. Member
  • ****
  • Posts: 334
    • USA, CA, Yuba City Zone 9B
    • View Profile
Re: Cushiony Cotton scale
« Reply #26 on: January 20, 2019, 12:06:25 AM »
I used isopropyl alcohol a while back and spot treated best I could, don't see any cotton scale. This is what I used on my oranges last spring and seems to have worked again. Will update if I see more soon. Haven't been in the yard much it's been cold and rainy.
-Kris

spaugh

  • Hero Member
  • *****
  • Posts: 1890
    • San Diego County California
    • View Profile
Re: Cushiony Cotton scale
« Reply #27 on: January 20, 2019, 12:29:58 PM »
I hosed my infected tree off 3 or 4 times and its looking clean now.   
Brad Spaugh

Millet

  • Moderator
  • Hero Member
  • *****
  • Posts: 3247
    • Colorado
    • View Profile
Re: Cushiony Cotton scale
« Reply #28 on: January 20, 2019, 02:33:37 PM »
I had mealy bugs on an in ground pomegranate.  I used a hose with an attached adjustable brass nozzle to wash them off the tree just as Spaugh wrote.

brian

  • Hero Member
  • *****
  • Posts: 827
    • Pennsylvania (zone 6)
    • View Profile
Re: Cushiony Cotton scale
« Reply #29 on: January 28, 2019, 12:21:57 PM »
I've applied imidacloprid at the highest listed rate, as a soil drench, to half of my trees.  I removed any fruit from them first. 

The other half I will treat with only soap sprays. 

zephian

  • Sr. Member
  • ****
  • Posts: 334
    • USA, CA, Yuba City Zone 9B
    • View Profile
Re: Cushiony Cotton scale
« Reply #30 on: March 05, 2019, 12:11:50 PM »
I've applied imidacloprid at the highest listed rate, as a soil drench, to half of my trees.  I removed any fruit from them first. 

The other half I will treat with only soap sprays.
Hey Brian,
Any updates?
-Kris

brian

  • Hero Member
  • *****
  • Posts: 827
    • Pennsylvania (zone 6)
    • View Profile
Re: Cushiony Cotton scale
« Reply #31 on: March 05, 2019, 02:45:47 PM »
I'm in hawaii  :D

I'll let you know as soon as I'm back. 

brian

  • Hero Member
  • *****
  • Posts: 827
    • Pennsylvania (zone 6)
    • View Profile
Re: Cushiony Cotton scale
« Reply #32 on: March 09, 2019, 01:00:36 PM »
I found some young adult CCS on one of the treated trees.  I don't think it worked.  However, the number of CCS I founds overall is far less than usual, so perhaps it is working somewhat, or hadn't been uptaken to the tips where these scale were found. 

I am going to treat the remaining plants and report back in another month.


spaugh

  • Hero Member
  • *****
  • Posts: 1890
    • San Diego County California
    • View Profile
Re: Cushiony Cotton scale
« Reply #33 on: March 11, 2019, 10:35:41 AM »
You will probably get better results if you use it during summer when your trees are using more water. 

Brian, are you unable to hose the tree off because of the greenhouse lacking drainage?  Simply blasting them off with a hose seems to work the best. 
Brad Spaugh

zephian

  • Sr. Member
  • ****
  • Posts: 334
    • USA, CA, Yuba City Zone 9B
    • View Profile
Re: Cushiony Cotton scale
« Reply #34 on: March 11, 2019, 11:47:00 AM »
I noticed some more on my pomello. The never ending battle continues!

We've finally go some nice weather so I'll be able to be much more attentive. I've also stripped the tree of all it's fruits so it should be easier to find now. :)
-Kris

brian

  • Hero Member
  • *****
  • Posts: 827
    • Pennsylvania (zone 6)
    • View Profile
Re: Cushiony Cotton scale
« Reply #35 on: May 06, 2019, 11:12:59 PM »
I think it worked.  I havenít seen any more CCS since my last post.  I do have some spider mites.  Getting rid of the CCS is huge though.  I hope they donít re-appear.

brian

  • Hero Member
  • *****
  • Posts: 827
    • Pennsylvania (zone 6)
    • View Profile
Re: Cushiony Cotton scale
« Reply #36 on: May 06, 2019, 11:14:48 PM »
Spaugh, using the hose works for large clusters but not the ones on the underside of leaves.  Even so, it only helps temporarily.  The presticide seems to have worked though

spaugh

  • Hero Member
  • *****
  • Posts: 1890
    • San Diego County California
    • View Profile
Re: Cushiony Cotton scale
« Reply #37 on: May 06, 2019, 11:32:20 PM »
Brian, thats good news.  Now for the spider mites.  The silver bullet is predator mites.  Order a small vile of the correct predator mites and they will eliminate your spider mites.   
Brad Spaugh

tve

  • Member
  • ***
  • Posts: 105
    • Santa Barbara, CA
    • View Profile
    • Intro post
Re: Cushiony Cotton scale
« Reply #38 on: May 07, 2019, 12:26:45 AM »
For anyone looking for predatory insects it's worth calling Rincon Vitova. They know their stuff and are helpful, at least when I called. I haven't purchased from them, though. They don't seem to have Vedalia beetles, might be interesting to find out why. (Their website seems a tad broken, some links don't work.)

I'm a strong believer in letting other insects do the work. It requires a bit of a leap of faith, some planning, and some work. Basically make sure there are host plants and environments for predatory insects nearby, never use pesticides, then when something happens do a mix of cutting out heavily infested parts and cleaning the rest with a strong water jet or similar. Finally, cut off the ants with tanglefoot and make sure they have some boric acid to consume (we have tons of argentine ants). Actually, the way I check on my trees is by looking at the trunk: no ants = tree OK, ant trail = some problem forming need to cut off ants, ant superhighway = uh oh, need to check more closely.

spaugh

  • Hero Member
  • *****
  • Posts: 1890
    • San Diego County California
    • View Profile
Re: Cushiony Cotton scale
« Reply #39 on: May 07, 2019, 12:35:00 AM »
Rincon Vitova is where I ordered from.  You really dont need to do anything special, you just release them and they take care of the problem.  Theres lots of places selling predators for spider mites now with all the legal cannabis states.
Brad Spaugh

brian

  • Hero Member
  • *****
  • Posts: 827
    • Pennsylvania (zone 6)
    • View Profile
Re: Cushiony Cotton scale
« Reply #40 on: May 07, 2019, 09:34:18 AM »
"does best on dense, low growing plants, not in hot greenhouses, not in dry interior valleys "

I am giving it a try anyway, just ordered a vial.  Thanks

brian

  • Hero Member
  • *****
  • Posts: 827
    • Pennsylvania (zone 6)
    • View Profile
Re: Cushiony Cotton scale
« Reply #41 on: June 11, 2019, 05:15:00 PM »
Spite mite predator mites didn't work.  Spider mites are still all over.  I also found a couple of young CCS :(

I re-applied imidicloprid, and if the spider mites stick around i'll try the predators once more.

Millet

  • Moderator
  • Hero Member
  • *****
  • Posts: 3247
    • Colorado
    • View Profile
Re: Cushiony Cotton scale
« Reply #42 on: June 11, 2019, 10:21:59 PM »
I find that a strong spray of just plain water, repeated every evening and dusk for 3 or 4 days works to rid spider mites,  I just place my thumb on the end of the hose and spray the upper and lower leaves and the ground under the tree.  This keeps the tree damp through the night.  Anywhere between 2 to 4 applications at dust has always worked for me.

brian

  • Hero Member
  • *****
  • Posts: 827
    • Pennsylvania (zone 6)
    • View Profile
Re: Cushiony Cotton scale
« Reply #43 on: June 16, 2019, 03:15:35 PM »
Donít they just come right back?  Or does their lifecycle make them seasonal?

They are a lot easier to spray off than the CCS, as the spider mites are very visible while CCS hides under leaves

Millet

  • Moderator
  • Hero Member
  • *****
  • Posts: 3247
    • Colorado
    • View Profile
Re: Cushiony Cotton scale
« Reply #44 on: June 16, 2019, 03:20:47 PM »
I don't know anything about CCS, as we do not have them in Colorado.  2 or 3 three good water sprays puts an end to spider mites.  Of course as with any insect sooner or later comes a new batch. 

 

Copyright © Tropical Fruit Forum - International Tropical Fruit Growers