February 2022 - 15

DR. BUGS
Their high
reproductive
potential
allows aphid
populations
to build up
quickly on
horticultural
crops in
greenhouses.
into refuse containers with tightsealing
lids or in garbage receptacles
located outside the greenhouse.
Insecticide Applications:
Systemic insecticides are applied
preventatively, before aphids
are present on plants, early in
the production cycle. Systemic
insecticides, in general, are applied
to the growing medium as a drench
or granule, providing up to 8 weeks of
protection against aphid infestations.
Contact insecticides must also be
applied early in the production cycle
to prevent aphid populations from
reaching plant-damaging levels. All
plant parts should be thoroughly
covered with spray application
solutions. In most cases, repeat
applications will be required. Allow
for ample spacing between plants
to ensure thorough coverage with
insecticide spray applications.
Releasing Biological Control
Agents: There are a number of
biological control agents (e.g.,
parasitoids and predators)
commercially available that can
be purchased and released into
greenhouses to manage aphid
populations. Parasitoids include
Aphidius colemani, Aphidius
ervi, Aphidius matricariae,
and Aphelinus abdominalis.
Predators include Aphidoletes
aphidimyza, Chrysoperla carnea,
Hippodamia convergens, and
Adalia bipunctata. All biological
control agents must be released
early in the production cycle
before aphids establish on
greenhouse-grown crops. Be
sure to have aphids identified
to species before purchasing
parasitoids because not all
parasitoids will attack the same
aphid species.
For more information regarding
aphid management, consult the
extension publication:
Aphid Management in
Greenhouse Production Systems,
March 2019 (MF3442), https://
bookstore.ksre.ksu.edu/pubs/
MF3442.pdf
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February 2022

Table of Contents for the Digital Edition of February 2022

February 2022 - 1
February 2022 - 2
February 2022 - 3
February 2022 - 4
February 2022 - 5
February 2022 - 6
February 2022 - 7
February 2022 - 8
February 2022 - 9
February 2022 - 10
February 2022 - 11
February 2022 - 12
February 2022 - 13
February 2022 - 14
February 2022 - 15
February 2022 - 16
February 2022 - 17
February 2022 - 18
February 2022 - 19
February 2022 - 20
February 2022 - 21
February 2022 - 22
February 2022 - 23
February 2022 - 24
February 2022 - 25
February 2022 - 26
February 2022 - 27
February 2022 - 28
February 2022 - 29
February 2022 - 30
February 2022 - 31
February 2022 - 32
February 2022 - 33
February 2022 - 34
February 2022 - 35
February 2022 - 36
February 2022 - 37
February 2022 - 38
February 2022 - 39
February 2022 - 40
February 2022 - 41
February 2022 - 42
February 2022 - 43
February 2022 - 44
February 2022 - 45
February 2022 - 46
February 2022 - 47
February 2022 - 48
February 2022 - 49
February 2022 - 50
February 2022 - 51
February 2022 - 52
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https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/2024-guide-to-cannabis-production
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-december-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/october-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/new-varieties-digital-guide-2024
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-april-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/2023-guide-to-hemp-production
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2023
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https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2023
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https://www.nxtbook.com/greatamericanmediaservices/GPN/2023-guide-to-cannabis-production
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-december-2022
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https://www.nxtbook.com/greatamericanmediaservices/GPN/gpn-new-varieties-digital-guide-2023
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-april-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/cannabisguide-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/hempguide-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/newvarieties-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2022
https://www.nxtbook.com/greatamericanmediaservices/GPN/december-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-november-2021
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https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-march-2021
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https://www.nxtbook.com/greatamericanmediaservices/GPN/cannabisguide-2021
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https://www.nxtbook.com/greatamericanmediaservices/GPN/january-2021
https://www.nxtbook.com/greatamericanmediaservices/GPN/december-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-november-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/november-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/october-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-september-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/september-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/august-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-july-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/july-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/june-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/april-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/californiaspringtrials-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-march-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/march-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/february-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/cannabisguide-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/hempguide-2020
https://www.nxtbook.com/greatamericanmediaservices/GPN/big-grower-january-2020
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https://www.nxtbook.com/greatamericanmediaservices/GPN/december-2019
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https://www.nxtbook.com/greatamericanmediaservices/GPN/may-2019
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