My two dwarf peaches (west side of Sacramento Valley) are seriously infected/infested with something unpleasant. Based on info from the UC Integrated Pest Management Program, the gummy material at the base of the tree is likely due to Peach Tree Borer [img]https://i1103.photobucket.com/albums/g476/tms14geo/TDSCN0502.jpg[/img]
However, everything I read about Peach Tree Borer describes them occurring at the tree base and on the trunk - I am seeing nothing on the trunk and lots of problem areas on the limbs. Again based on the UC IPMP, the most likely candidate I see is the Pacific Flathead Borer. The next photo below is from UC IPMP showing flathead borer damage. The ones following are some of the problem limbs on my trees. Most of the wounds have a lots of an amber gelatinous material. The last photo shows what appears to be an older wound with none of the gelatinous material, just a little sap, and one hole bored into the wood at each end.
Can anyone suggest candidates of what I might be dealing with? Perhaps both kinds of borers? Any suggestions on how to fight the infestation? I appreciate all help/suggestions. Thanks.
Tom
[img]https://i1103.photobucket.com/albums/g476/tms14geo/I-CO-CMAL-CD005h.jpg[/img]
[img]https://i1103.photobucket.com/albums/g476/tms14geo/TDSCN0468.jpg[/img]
[img]https://i1103.photobucket.com/albums/g476/tms14geo/TDSCN0470.jpg[/img]
[img]https://i1103.photobucket.com/albums/g476/tms14geo/TDSCN0461.jpg[/img]
[img]https://i1103.photobucket.com/albums/g476/tms14geo/TDSCN0462.jpg[/img]
[img]https://i1103.photobucket.com/albums/g476/tms14geo/TDSCN0503.jpg[/img]
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Tom the Elder
- Full Member
- Posts: 16
- Joined: Sun Feb 14, 2010 8:34 pm
- Location: Davis CA
Hi Tom.
The problem with all the borer pests is that once they have penetrated the tree you can't get at the little blighters. So you have to fight them with prevention of re-infection.
We would spray in July and August....towards the end of the cropping period ....to get at the eggs and young larvae.
Insectacides containing Permethrin, Esfenvalerate and Carbaryl.
The latter is banned over here but may still be available to you.
The problem with all the borer pests is that once they have penetrated the tree you can't get at the little blighters. So you have to fight them with prevention of re-infection.
We would spray in July and August....towards the end of the cropping period ....to get at the eggs and young larvae.
Insectacides containing Permethrin, Esfenvalerate and Carbaryl.
The latter is banned over here but may still be available to you.
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DoubleDogFarm
- Super Green Thumb
- Posts: 6113
- Joined: Sun Mar 28, 2010 11:43 pm
more on this site. It also talks about the bore beetle.Peach Cytospora Canker
Peach Cytospora canker is a serious pathogen of all stone fruit (peach, apricot, plum, nectarine, almond and cherry). Trees as well as shrub-forms are susceptible to this pathogen. Local orchardists refer to this problem as `gummosis' "(1) due to the characteristic gum that oozes from infected peach trees.
https://www.coopext.colostate.edu/TRA/PLANTS/gummosis.shtml
Eric