Objective
1. Prepare CD references and lessons for extension agents.
In order to help extension
staff identify weeds, photographs of nearly 200 species have been
scanned onto CD’s and distributed to livestock agents. This
is the first “draft”. It is anticipated that in a year,
a revised, higher resolution version will be made and distributed
to agents. Work has been initiated on PowerPoint presentations on
weed science principles that will be used by agents in future training
workshops.
Objective
2. Determine if the adjuvants such as LI-700, Silwet L-77, crop
oil and Nu-Film will significantly increase the efficacy of MCPA
on Senecio madagascariensis, of dicamba on Rhodomyrtus tomentosa
and on Senna spp.
Objective
3. Establish the susceptibility of woody species to VLVBB applications
of triclopyr.
Accomplishments: A very-low-volume
basal bark (VLVBB) application trial was initiated on Acacia mearnsii
on Kauai. Also a very-low-volume foliar application (VLV) trial
on Eucalyptus spp. saplings was installed also on Kauai. Both these
trials were in cooperation with the Division of Forestry and Wildlife
(DOFAW). A trial on foliar applications of dicamba DGA to control
Rhodomyrtus tomentosa, an invasive weed tolerant to most available
herbicides was installed on Kauai in cooperation with DOFAW and
a rancher. Results of these trials are pending. Project personnel
provide consultation to two large ranches on Maui on large scale
weed suppression operations. In the first, aerial applications were
made on 500 acres of Ulex europaeus infested pastures. It is anticipated
that several thousands of dollars will be saved over their old ground
application program which was not stopping the advance of U. europaeus.
In the second, an aerial application program was prescribed to control
mixed brush species on 500 acres. These invasive species were Psidium
guajava, Ardesia humilis, Schinus terebinthifolius, and Miconia
calvescens. This latter project involves participation of the National
Park Service and DOFAW. Results of these operations are pending.
Outcomes:
Research has been initiated and results are pending. It is anticipated
that methodology developed will be adopted by ranchers, foresters
and others. These methods will be efficient, effective and environmentally
safe.
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