January 2021 - 33

RESEARCH
Figure 4. Spotted spurge
growth in containers at 8 weeks
after seeding at four different
fertilizer placements.
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incorporation increased spotted
spurge germination by 77 to
183%, compared with other
placements or an unfertilized
control. Subdressing reduced
seed production by 94%, 63%
and 92% for eclipta, large
crabgrass and spotted spurge,
respectively, compared with
the average number of seeds
produced in the conventional
placement methods (average of
incorporation and topdressing).
Dibbling fertilizer resulted in
similar decreases in the case
of large crabgrass and spotted
spurge, while ecipta produced
no seeds when fertilizer was
dibbled (Figures 2, 3 and 4).
Similar to reductions observed
in reproduction, subdressing
fertilizer resulted in biomass
decreases of 90%, 81% and
85% compared with the average
biomass of the incorporation and
topdressed placements (Figures
2, 3 and 4). Results suggest
alternative fertilizer placements
could be implemented as part of
an integrated weed management
program in container production
to reduce weed growth.
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RECOMMENDATION
Although subdressing and
dibbling both have shown
reduced weed growth,
subdressing of fertilizer will
be more recommendable than
dibbling. This is because in
dibble, the fertilizer is placed in a
concentrated form at one pocket
in the container which can cause
phytotoxic effect to the roots
of certain sensitive ornamental
plants. Hence, subdressing of
fertilizer can be an effective
cultural method to control weeds
for ornamental crop production
in containers.
FEEL SECURE KNOWING THAT WE HAVE YOUR BACK.
Debalina Saha is assistant professor
in the Department of Horticulture at
Michigan State University. She can
be reached at sahadeb2@msu.edu.
Vested in Your Success
GREENHOUSE PRODUCT NEWS 33

January 2021

Table of Contents for the Digital Edition of January 2021

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