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Global Invasive Species Team listserve digest #038
Thu, 29 Jul 1999 16:06:04 -0700 (PDT)
--CONTENTS--
1. Unintended side effects from Arsenal
2. Storing leftover herbicide mixes
3. Lespedeza bicolor
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1. Unintended side effects from Arsenal
From: Jeff DeBlieu (smithdeb(at)nhwoods.org)
In the fall of 1998 we used Arsenal (according to manufacturer's
specifications) to treat the cut stems of oriental bittersweet in a small
area around the visitor center at the Nags Head Woods Preserve. We've seen
a rather bizarre result.
The shrubs and deciduous species within and immediately adjacent to the
treatment area did not put out normal growth this spring. They either did
not put out any growth at all, put out seriously stunted leaves, or put
out no new growth from their buds but only stunted leaves from their
trunks or primary branches. The plant tissue on all these seems to be
green and viable.
The evergreen red bay growing in the area also seems to be heavily
stressed; in the severe heat of the summer we are seeing much more foliage
death and/or browning that we usually have.
I hope that we will see a return to "normal" next year. In the meantime I
am photographing what I find.
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2. Storing leftover herbicide mixes
From: Joan Yoshioka (jyoshioka(at)tnc.org)
With regard to storing leftover herbicide mixes, remember that the
bottle/jug you store it in should be properly labelled with the herbicide
name, concentration of the mix, amount stored, etc. The Hawaii Dept. of Ag
folks are sticklers about that. In addition, don't store leftover mixes in
drink or food bottles (even if you take off the label).
Joan gave high marks to the U. of Hawaii's Extension Service's
newsletter called "The Pesticide Label". It addresses pesticide safety
and education and is printed bimonthly. It has great articles on
application methods, and is on the web at:
http://pestworld.stjohn.hawaii.edu/epp/pat.html
--Barry
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3. Lespedeza bicolor
From: Ellen M. Jacquart (ejacquart(at)tnc.org)
Is anybody out there having a problem with Lespedeza bicolor? In
Indiana, we have a few places it's showing signs of moving away from
where it's been planted - nothing big and dramatic yet, but something
we're eyeing with suspicion.