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Field
trials on apples were conducted in Orondo, Washington. Three control
blocks were sampled but not teated. Five similar blocks were sampled
and treated with Bird Shield(tm). Random trees within each block
were checked for bird damage before treatment. Damage was defined
as a pecked, partially consumed, or removed apple. |
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The blocks to be treated
were sprayed by air with one, two, and four quart concentrations
of Bird Shield(tm) in ten gallons of water, per acre. Both fixed
wing and helicopter spraying was used. Two weeks after treatment
the blocks were again checked for damage. Allowing for pre-treatment
damage, the untreated blocks averaged 20.3 per cent damage, while
the treated blocks averaged 1.15 per cent damage.
The optimum treatment rate was two quarts per
acre, though significant control was achieved at half that rate,
and somewhat better control at one gallon. Similar results were
achieved in trials with a tracter drawn ground based air blast sprayer
using 100 gallons of water per acre to achieve coverage, however
it was necessary to use approximately twice as much Bird Shield(tm)
to obtain the same results. |
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