Winter 2021 - 32

MATING DISRUPTION
Make mating disruption a
part of your IPM program
BY CRYSTAL NAY
WESTERN EDITOR
M
ating disruption has been around for decades. It's
already a staple in apple, pear and other crops for
codling moth control, and has now found its way
into the mainstream and become an important part of an
integrated pest management (IPM) program for some of the
California tree nut industry's toughest pests.
Tree nut acreage in California has increased dramatically
over the last four decades, with a 190% increase in just the
last 20 years. With this much increase in a host crop, it's no
surprise that navel orangeworm (NOW) populations have
proliferated with it.
It is estimated that for NOW, mating disruption is
currently used in roughly 400,000 acres of tree nuts out of
2 million bearing acres. This ballpark figure, however, may
32 WINTER 2021
be low, as mating disruption often goes underreported.
" I think the main, fundamental principle that a grower
can have is how to reduce the pest populations inside their
orchards every year during the winter, so that going into the
spring, they won't have that big of a problem, " said Jhalendra
Rijal, area IPM advisor with University of California
Cooperative Extension.
Some industry estimates say that less than 50% of acreage
was sanitized in 2019, with other experts saying it's closer to
less than 30%. Bob Klein, manager of the California Pistachio
Research Board, mentioned in an interview in early 2020 that
the industry suffers roughly $800 billion in losses across all
tree nuts due to the costs of control and economic damage
caused by NOW.

Winter 2021

Table of Contents for the Digital Edition of Winter 2021

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https://www.nxtbook.com/greatamericanmediaservices/NNG/march-april-2024
https://www.nxtbook.com/greatamericanmediaservices/NNG/january-february-2024
https://www.nxtbook.com/greatamericanmediaservices/NNG/november-december-2023
https://www.nxtbook.com/greatamericanmediaservices/NNG/september-october-2023
https://www.nxtbook.com/greatamericanmediaservices/NNG/july-august-2023
https://www.nxtbook.com/greatamericanmediaservices/NNG/may-june-2023
https://www.nxtbook.com/greatamericanmediaservices/NNG/march-april-2023
https://www.nxtbook.com/greatamericanmediaservices/NNG/january-february-2023
https://www.nxtbook.com/greatamericanmediaservices/NNG/november-december-2022
https://www.nxtbook.com/greatamericanmediaservices/NNG/september-october-2022
https://www.nxtbook.com/greatamericanmediaservices/NNG/july-august-2022
https://www.nxtbook.com/greatamericanmediaservices/NNG/may-june-2022
https://www.nxtbook.com/greatamericanmediaservices/NNG/march-april-2022
https://www.nxtbook.com/greatamericanmediaservices/NNG/january-february-2022
https://www.nxtbook.com/greatamericanmediaservices/NNG/winter-2022
https://www.nxtbook.com/greatamericanmediaservices/NNG/fall-2021
https://www.nxtbook.com/greatamericanmediaservices/NNG/summer-2021
https://www.nxtbook.com/greatamericanmediaservices/NNG/winter-2021
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