April 2022 - 24

BIOCONTOLS & BIOPESTICIDES
Biofumigation for soilborne disease control revisited
By Gordon Johnson
University of Delaware
Crop rotation is a key to successful
vegetable production. However, land
limitations often make long term
rotations difficult. Shorter rotations
lead to a buildup of pests, with
soilborne diseases and nematodes
being a major challenge for many
vegetable crops.
One approach to tighter rotations is
to fumigate soils using commercially
available chemical fumigants.
Fumigants such as chloropicrin;
dichloropropene + chloropicrin;
metam-sodium, and metam-potassium
are being used in this region where
labeled. A major drawback to
chemical fumigation is material
cost. There are also application
requirements and equipment
considerations to take into account.
There has been considerable
interest in the use of certain crops
as biological fumigants ahead of
vegetable production to reduce
the need for chemical fumigation,
especially in tight rotations. These
are crops that would be grown for
their naturally occurring compounds
that kill soil borne pests. Plants in
Flail mowing followed by immediate incorporation is critical to biofumigation success. Photo: BioSustainable Solutions
the mustard family, such as mustards
and rapeseed, and sorghum species
(sudangrass, sorghum-sudangrass
hybrids) have shown the potential to
serve as biological fumigants.
Research in this region and across
the country has shown promise in
using these crops to reduce soil
borne pests. Plants from the mustard
family produce chemicals called
glucosinolates in plant tissue (foliage
particularly). These glucosinolates are
released from plant tissue when it is
cut or chopped, and then are further
broken down by enzymes to form
chemicals that behave like fumigants.
The most common of these
breakdown products are isothiocyanates.
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24 | FruitGrowersNews.com
H.F.HAUFF
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April 2022

Table of Contents for the Digital Edition of April 2022

April 2022 - 1
April 2022 - 2
April 2022 - 3
April 2022 - 4
April 2022 - 5
April 2022 - 6
April 2022 - 7
April 2022 - 8
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April 2022 - 10
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https://www.nxtbook.com/greatamericanmediaservices/FGN/2025-fruit-nut-growers-buyers-guide
https://www.nxtbook.com/greatamericanmediaservices/FGN/november-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/september-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/july-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/june-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/december-fgn
https://www.nxtbook.com/greatamericanmediaservices/FGN/fgn-vgn-40-under-40-class-of-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/buyers-guide-2024
https://www.nxtbook.com/greatamericanmediaservices/FGN/november-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/september-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/july-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/june-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2023
https://www.nxtbook.com/greatamericanmediaservices/FGN/december-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/november-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/buyers-guide
https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/september-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/july-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/june-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/buyersguide-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2022
https://www.nxtbook.com/greatamericanmediaservices/FGN/december-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/november-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/september-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/july-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/june-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/buyersguide-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2021
https://www.nxtbook.com/greatamericanmediaservices/FGN/december-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/november-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/september-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/july-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/june-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/buyersguide-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2020
https://www.nxtbook.com/greatamericanmediaservices/FGN/december-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/november-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/october-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/september-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/august-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/july-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/june-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/may-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/april-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/march-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/february-2019
https://www.nxtbook.com/greatamericanmediaservices/FGN/january-2019
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