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Project Leader(s):
Terence Robinson, Dept. of Hort. Sci., NYSAES,
Cornell University, Geneva, NY 14456
Art Agnello, Dept. of Entomology, NYSAES, Cornell
University, Geneva, NY 14456
Harvey Reissig, Dept. of Entomology, NYSAES,
Cornell University, Geneva, NY 14456
Jim Schupp, Dept. of Hort. Sci., NYSAES, Cornell
University, Highland, NY 14456
Heidi Noordijk, Graduate Student, Dept. of Hort.
Sci. Highland NY 12528
Cooperator(s):
Deborah I. Breth, Cornell Coop. Ext., Lake Ontario
Fruit Team, Albion, NY 14411
Stephen A. Hoying, Cornell Coop. Ext.-Lake Ontario
Fruit Team, Newark, NY 14568
James Bittner, Fruit Grower, Singer Farms Olcott,
NY (Grower Cooperators)
Steve Clark, Fruit Grower, Milton, NY (Grower
Cooperators)
Charles Mead, Fruit Grower, Red Hook, NY (Grower
Cooperator)
Type of grant: Pheremones, biorationals; microbials; organic
pesticides
Project location(s): Throughout the Northeast
Abstract:
Several NY apple growers have indicated they
see a marketing opportunity for NY grown organic apples (both fresh
and processed products) and have requested a Cornell University led
effort to develop a system of organic apple production for NY. In 2003
we studied apple maggot management, and fruit thinning control tactics
that are organically approved. We have evaluated an organic approved
insecticides Entrust and Dipel for apple maggot control in the late
season. Entrust gave good control of the internal worm complex including
apple maggot. Entrust was slightly better than to Dipel. The late season
control obtained with Entrust needs to be combined with early season
pest control with kaolin clays (Surround) which we reported on last
year. With organic approved thinning agents we had excellent success.
The Fish Oil/Lime Sulfur combination gave excellent thinning efficacy
and a wide window of application (full bloom to post petal fall). NC-99
also gave significant thinning but gave more phytotoxicity. Both products
also resulted in a small improvement in fruit size.
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