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Did You Know??
The following restriction is on the Benlate label: "Not for use in
home plantings nor once any commercial crop is turned into "U- Pick",
"Pick Your Own" or similar operation."
It is important to review all labels to be aware of any restrictions on use.
Saving Money .... Invest in Sprayer Maintenance
The cost of replacing a faulty pressure gauge (indicating 15% below the actual pressure)
can be recouped in approximately two hours of operation. In less than a day's work,
the cost of a new set of nozzles, replacing a set that was overdosing by as little as 5%,
can be recovered. So says Dr. Andrew Landers, Agricultural and Biological
Engineering, Cornell, in "Preparing the Airblast Sprayer for Work" (in
Scaffolds Fruit Journal, Vol. 9, 2000).
Proper sprayer maintenance and calibration are fundamental components
to safe and effective pest management. Now is the time to complete the
tree-row-volume calculations for each block and make sure your sprayer is fully
operational and ready for calibration. Note that with many of the newer pesticides,
there is very little room for error in terms of application to produce desired results.
2000 Degree-Day Accumulation
Degree Day (DD) models for arthropods and diseases are very useful IPM tools.
Enclosed in this newsletter is a blank chart which may be helpful to you in keeping track
of DD at your orchard. As we did last year, we will be publishing DD
accumulation from orchards around Vermont in this newsletter and our website: http://orchard.uvm.edu
'Rotation' of Miticides -
- A Reminder
As has been advocated in previous years, it is important to 'rotate' your miticides
in order to manage the development of resistance. If you used either Apollo or
Savey last year, you should not use either of them this year or if you had used
Agri-Mek instead, you should switch to another miticide.
Oil remains a mainstay in European red mite management. In addition, a 2% oil
treatment at Half-Inch Green can also control the nymphs of San Jose Scale.
Good coverage of the trees is critical for both mite and scale management
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