February 2023 - 23

PLANT & SOIL HEALTH
of foliar applications, including
bioflavonoids, silica, seaweed,
amino acids, enzymes, fulvic acids
and humic acids, elements which
can positively influence plants that
have experienced heat stress and
excessive salt.
Energy boost
Because they provided their plants
with specific energy needs, those
growers fared better than others,
Gordon said.
" It's like sports performers who
are into being healthy, " he said.
" They have to get the right rest and
do all these things so they can be
at their peak performance because
when in competition, they're under
an extreme amount of stress. Our
crops are no different. "
In a talk on why insects do not
attack healthy plants and how
electrical conductivity of soils affects
plant growth, Thomas Dykstra of
Gainesville, Florida-based Dykstra
Laboratories discussed ways
growers can test their plants.
Visual observations, including
judging color, fast growth and
flowering aren't accurate and don't
provide standalone indications of
plant health. Inexpensive handheld
leaf brix refractometers, for
example, can provide immediate
plant health results, Dykstra said.
Invading forces would spread
salt on conquered lands before
departing, he said, and application
of high salt fertilizers compromises
plant health. Many basic NPK
(nitrogen, phosphorus and
potassium) fertilizers are considered
high in salt, and can burn roots and
prevent water uptake. Tip burn can
signal excessive conductivity.
Green beans and leafy greens are
least able to handle salt, with sweet
corn, potatoes and tomatoes
slightly more tolerant. Kochia
thistles can handle high levels
of salt and take high conductivity
better than other plants.
" High conductivity plants result in
highly-conductive plants, " Dykstra
said. " We cannot say salt is bad. We
can simply say too much is bad. "
Exposure of plants to humic
substances increases nitrate
transporters, which move nutrients
in cell membranes, boosting root
numbers and nitrate absorption,
said Rich Lamar, senior director of
Humic Research at Bio Huma Netics,
who discussed the science behind
humic substances.
Humic factor
Because a grower won't know
when plants will experience stress
FRUITGROWERSNEWS.COM | 23

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February 2023

Table of Contents for the Digital Edition of February 2023

February 2023 - 1
February 2023 - 2
February 2023 - 3
February 2023 - 4
February 2023 - 5
February 2023 - 6
February 2023 - 7
February 2023 - 8
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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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