March 2024 - 6

PLANT & SOIL HEALTH
Scientists study
raspberry root
rot and wilt
Disease affects production in wetter growing regions
BY CHRIS KOGER
MANAGING EDITOR
R
aspberry root rot and wilt
(RRW) in British Columbia,
Canada and the U.S. Pacific
Northwest is a common problem
faced by growers, with the vigor
of plants declining and leading to
fruit losses and the death of plants
within six years - cutting the life
cycle in half.
Caused by the plant-damaging
oomycetes (water molds) known as
Phytopthora, RRW in raspberries
leads to millions of dollars in
losses, and is the most important
problem for the berries that U.S. and
Canadian growers face, according to
Rishi Burlakoti, a research scientist
in plant pathology at Agriculture
and Agri-Food Canada's Agassiz
Research and Development Center in
Agassiz, British Columbia.
Burlakoti and other scientists
wrapped up a five-year study on
raspberry RRW in 2023, but there
are plans to build on what they
found through the government and
industry-funded research.
Moisture triggers the soilborne
pathogen, allowing it to attach to root
tips and blocking nutrient and water
uptake. Compounding the problem
is the pathogen's ability to remain
dormant for up to 10 years.
" Motile spores will infect plants
via roots, colonize the root tissue
and ultimately move to stem base
and above-ground plant tissue, "
Burlakoti said. " The pathogen may
block the vascular system of the
Plants in this raspberry field exhibit symptoms of root rot and wilt,
which stunts growth by blocking water and nutrient uptake. The
fungal disease, if untreated, will eventually kill the plant. Photos
courtesy Agriculture and Agri-Food Canada.
6 | MARCH 2024

March 2024

Table of Contents for the Digital Edition of March 2024

Editor's Letter
Plant & Soil Health: Scientists study raspberry root rot and wilt
Pest Management: Pest update
Berries: Tech aids Salinas Valley grower
Southeast Regional Fruit & Vegetable Conference: Lawton Pearson named Mr. Peach
Organic Grower Winter 2024
Business: The surprising challenge
Farm Market & Agritourism: Keeping CSA members engaged and loyal
Ag Labor Review: 60 years of advocating for agricultural employers
Classifieds
Advertiser Index
March 2024 - 1
March 2024 - 2
March 2024 - 3
March 2024 - Editor's Letter
March 2024 - 5
March 2024 - Plant & Soil Health: Scientists study raspberry root rot and wilt
March 2024 - 7
March 2024 - 8
March 2024 - 9
March 2024 - Pest Management: Pest update
March 2024 - 11
March 2024 - Berries: Tech aids Salinas Valley grower
March 2024 - 13
March 2024 - 14
March 2024 - 15
March 2024 - 16
March 2024 - 17
March 2024 - Southeast Regional Fruit & Vegetable Conference: Lawton Pearson named Mr. Peach
March 2024 - 19
March 2024 - 20
March 2024 - Organic Grower Winter 2024
March 2024 - 22
March 2024 - 23
March 2024 - 24
March 2024 - Business: The surprising challenge
March 2024 - 26
March 2024 - 27
March 2024 - Farm Market & Agritourism: Keeping CSA members engaged and loyal
March 2024 - 29
March 2024 - Ag Labor Review: 60 years of advocating for agricultural employers
March 2024 - 31
March 2024 - Classifieds
March 2024 - 33
March 2024 - Advertiser Index
March 2024 - 35
March 2024 - 36
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