February 2023 - 12

Going deep
Roots determine tree development in orchards
BY GARY PULLANO
FGN SENIOR CORRESPONDENT
D
etermining how tree fruit orchardists can
manipulate soil health, and use planting and
cropping practices to get the optimum outcomes
from tree root systems is a key question being
examined by researchers.
Astrid Volder, professor of plant sciences in the
College of Agricultural & Enviornmental Sciences at
the University of California, Davis, provided an
update on the topic in December at the recent Great
Lakes Fruit, Vegetable & Farm Market EXPO in
Grand Rapids, Michigan.
Volder outlined what roots actually need in
perspective to soil health.
" Soil health refers to the ability of soil to perform
key ecosystem functions, including sustaining plant
growth, minimizing erosion, regulating water flow, and
buffering and filtering of potentially toxic materials, "
she said.
Soils need oxygen for respiration. How good that
soil is in providing oxygen and nutrients to the roots is
crucial to tree fruit development.
" Things change over time, " Volder said. " Soil is very
dynamic. Oxygen availability is strongly affected by how
much water you have in your soils. The temperature
within the soil is an impact, too, including seasonal
fluctuations in temperature. "
All of those factors determine the material in the
microbes and whether nutrients are available or not.
Within an orchard, there is huge variability within the
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12 | FEBRUARY 2023
Germains Seed Technology
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MACMA/Michigan Processing Apple Growers
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Oxbo International
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Puehler AgCo Inc.
Reister's Grower Services
Rockford Package Supply
Shawnee Canning Company, Inc
Soil Production Solutions
Summit Tree Sales, Inc.
Syngenta
Syngenta Professional Solutions
TriEst Ag Group
UPL - LTD, NA
Valent U.S.A. LLC
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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
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February 2023 - 8
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