BT works on caterpillars(moth and butterflies) and BT israelinsis works
on mosquito larvae.The borers are beetles and the damage is done by the
beetle larvae chewing around in the cambium layer of the tree destroying
the actual growing layer.The poison of choice is Lindane which is the
last chlorinated hydrocarbon not to be banned(related to DDT).An oil
dormant spray may help and is not toxic per se.Woodpeckers are attracted
to borer larvae as food but the underlying problem is the lack of health
in the tree.Borers are just a symptom of something else going on.Healthy
unstressed trees do not get borers or other problems.The bugs are
natures way of beginning the breakdown and recycling to come.
Everything stats with the health of the soil.I would start with the soil
when I plant anything.If the soil is good environment for earthworms it
will be good for a tree.pH of soil should have pH around 5.5-6.5.It
should have good drainage.Should have organic matter,clay
colloid,loam,loam.SulPoMag is a good start up fertillizer and I like
using som colloidalPhosphate or rock Phosphate.If no SulPoMag use
Sulphate of Potash and some epsonsalt about a half cup of each mixed
in,acouple cups of rotted chicken manure is good too.---Holland
I wonder if bacillus thuringer would kill them. Very nice bionic
control if it does, and you only have to apply once.
Marshall
[email protected] wrote:
In a message dated 5/3/04 11:47:18 AM Central Daylight Time,
[email protected] writes:
If the borer beetles are coming up from debree and or the
soil---yes,tanglefoot would stop them.If the beetles are flying in
then---No.
Hmmmm -- I don't know where the heck they're coming from. All I know
is that for the past 18 years, every damn tree that I plant dies from
borers attacking it. And I feed them well, water them in drought and
spray for borers the way the nursery tells me to. I've got two young
Kwanzan Cherries dying in the front yard right now. They replaced two
Dogwoods. Which replaced two Dogwoods. Ad infinitum. Borers have
also badly damaged two young Maple trees, and my cherry (producing)
tree. I'm SO disgusted. This year I tried Diamataceous Earth for the
first time. Don't know if it's working or not. Unfortunately, I find
out if the product is (not) working by the tree dying the following
year. :-( Thanks for the info. MA
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