I would guess that Bt would work on any leaf eater then.The problem is
the inaccessability of something maturing under the bark.I used Bt on
orangedogs on citrus(black swallowtail butterfly) until I realized they
were doing me no harm and were oportunistic rather than an infestation.I
suppose Bt might be injected into the tree.I have seen people hang
little cloth bags of 'moth balls or crystals ' that would ward off the
beetle-moms.Bt is pretty cool as long as you are careful not to
overspray something that butterflys might like.Moths on the other hand
generally are none to picky about their eats or they reproduce in far
larger populations. I had a 35 foot grapefruit tree and I don't think I
saw over5 orangedogs at one time.I'm sure this is realative to species
though.A lot of butterflies raise their young on poisonous plants so
they will be unpalatable to birds.Orangedogs use mimicry and look like
sun burned bird-turds which put the birds off.Ain't nature grand?!
Milkyspore disease can be used on a lawn to take care of lawn grubs and
if you use it two years in a row you will have made your lawn a grave
for Japanese beetles in the ground stage.There is also a disease spore
that works on grasshoppers if applied early enough.There was a disease
being researched at U of Florida that works on fire ants.
-Holland
Holland Simms wrote:
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.
BT also works quite well on Japanese Beetles.
Marshall
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