While one goal of the SIR Program is to reduce
the need for chemical pesticides, there are situations
where chemical intervention may be required.
Whether you apply the spray yourself or hire a
Professional Pesticide Applicator, spraying should start
about two weeks after petal fall (petal fall is when
most of the trees flower petals have fallen from the
tree, usually early June) and continue until near
Many factors impact the success of a spray program,
including: the product used, spray residual, timing,
spray coverage, weather, irrigation, and the level of
codling moth pressure.
The BC Ministry of Agriculture and Lands provides
here on managing backyard fruit trees, including the
use of pesticides.
Be aware that spraying alone may not control codling
moth infestation. It is important to properly
thin the fruit clusters, and remove and destroy all
infested fruit throughout the entire growing season.
SIR Program staff can provide information to growers on
what infestation has been found (if any) and what wild
codling moth traps have recorded in specific orchards
and nearby areas. This information can help growers plan
what codling moth control measures are necessary,
including the use of chemical pesticides.
Orchardists should contact their field consultant for
advice on how to control codling moth on their orchards. Control of codling moth can often be combined with
control for other pests. Packinghouse field service
staff or consultants have the expertise to advise
orchardists on appropriate control measures.
The SIR Program appreciates the use of spray warning
notifications by growers so that staff can safely
deliver services to orchards.
Spray records - All growers are reminded to keep accurate and up-to-date records of all pesticide sprays applied to the blocks they manage. You can use the forms developed by the Okanagan Tree Fruit Company (OTFC) in the Integrated Fruit Production Guide or use your own record-keeping form that reports the same information as the OTFC form. If you ship to the OTFC, you must keep spray records in order to ship to the packinghouse as part of the on-farm food safety requirements as prescribed by CanadaGAP. The SIR Program, OTFC fieldmen and private advisors also need these records to uncover possible reasons for failures in codling moth control, and to also determine if growers are eliminating or reducing the number of cover sprays according to codling moth numbers in their blocks.
BC Ministry of Agriculture and Lands provides further information on codling
moth monitoring, and control.
Pesticide Resistance Management - It is
well known that many pests can develop resistance to
pesticides over time. To avoid development of
resistance, growers are reminded to follow a pesticide
resistance management (PRM) plan based on rotation of
chemical groups. A step-by-step guide to help in
developing a PRM plan is available