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Status of project: The orchard was established
in May of 2004. Seventy percent of the trees were Gold Rush and
Enterprise. These were planted in a 2 acre block located at the
Penn State Fruit Research and Extension Center, Biglerville, PA.
Additional apple trees will be planted this 2005 season to complete
the 1 acre each of Gold Rush and Enterprise for the organic demonstration
orchard. This orchard will be utilized over the next ten years to
develop some recommendations to assist growers in transitioning
their orchards into organic apple production.
Enterprise and Goldrush were selected for this orchard because both
varieties have resistance to diseases and they have potential of
being used as a processing apple or for fresh market. These varieties
are currently being tested by processors to determine their potential
for the processed market. Apple diseases, insects and other pest
problems will be observed throughout the 10 year duration of the
project. The economics for establishing and maintaining an organic
orchard will be determined.
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Bashar planting apple trees
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Organic Apple Orchard
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Bill Kleiner discussing organic
requirements
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Results/Accomplishments 2004: Insect Pests,
Disease and Weed Management
Trilogy (Neem oil), and Stylet Oil were sprayed to control insects
and diseases. Japanese beetles and leaf hoppers were prevalent in
the block during the 2004 crop season. There was no major occurrence
of diseases except for fire blight. Six Gold Rush trees died due
to shoot blight infection. It appeared that Enterprise was more
resistant to fire blight than Gold Rush. Weed management was accomplished
through hand hoeing, organic herbicides, and "mechanical hoeing"
via a Weed Badger. The Weed Badger was borrowed from a grower and
is a tractor-mounted, PTO-driven cultivator that tilled right up
to the tree without damaging the plant. Cultivation by the Weed
Badger is efficient and effective when weeds were still young. The
use of organic herbicides such as Ground Force and Matran (containing
vinegar/acetic acid) was also tested in some of the tree-rows but
did not prove effective. More testing on organic herbicide application
timing is scheduled.
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Weed Badger
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Weed Badger close-up
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weed burner
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weed burner, closeup of flame
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2004 Organic Apple Orchard History Activities/Notes:
The block was previously planted with 40 year old apple trees
that were removed in the winter of 2001. The field was planted with
corn and wheat in 2002 and 2003, respectively, using conventional
corn and wheat management. Herbicides applied in 2002 were Bicep
II, Dual Magnum and Prowl and fertilized with 10-20-20 of NPK in
2003. The organic orchard is surrounded by experimental apple orchards
utilized for the evaluation of alternative disease management of
scab, fire blight, powdery mildew and other summer diseases including
orchard floor management and rootstock screening for fire blight.
2004 Record of cultural /pest management activities after planting:
See
Organic Orchard Pest Control Update, 2005
a. May 17 - Pruned new trees
b. May 26 - Removed blossoms
c. June 24 - Observed presence of fire blight, powdery mildew
and leaf hoppers
d. June 29 - Sprayed 1 % Organic JMS Stylet Oil to control
powdery mildew
e. July 1 - Cut fire blight infected shoots
f. July 8 - Sprayed Aza-Direct 1 pt/A to control leaf hoppers
g. July 13- Second spray of Aza-Direct at 1.5 pt/A
h. July 15 - Applied Streptomycin to control fire blight
at 8 oz/A
i. July 21 - Irrigated the block at 4 gal/tree
j. July 22 - Applied organic fish nutrient fertilizer (OmegaGrow)
at 2 gal/A
k. August 24- Controlled weeds by hand hoeing
l. September 1 - Controlled weeds with Matran 2 (6gal/A)
and Ground Force (5gal/A)
m. September 2 - Applied fish nutrient fertilizer (OmegaGrow)
at 2 gal/A
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