Page 12—Corn Talk, Lancaster Farming, Saturday, July 17,1993
Project Looks At No-Till Com
BEDFORD (Bedford Co.)
Bedford county com grow
ers are cooperating in a study
designed to evaluate the role of
trashwheels in no-till com and
to look at potential barriers of
adoption of no-till com in the
area.
The study has been spon
sored by the Bedford County
Conservation District, Penn
State’s Department of Agro
nomy, and Bedford County
Cooperative Extension.
Richard Hershberger, agri
conservation technician for the
Bedford County Conservation
District, has been coordinating
the project alonjg with Greg
Roth, an assistant professor of
agronomy at Penn State.
“We’ve established plots on
about IS local fields to examine
the effects of the trashwheels
mounted on the district’s plan
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ters,” said Hershberger. Hersh
berger coordinates a no-till
program in the county which
makes four rental com planters
available to county corn
growers.
This year, 60 farmers rented
equipment with about 75 per-
cent of the cooperators no
tilling their fields. Nearly 1,300
acres were planted with the
rental planters.
On two of the planters,
Hershberger installed trash
wheels on two of the four plant
ing units. The trashwheeels are
devices that are added to a con
ventional no-till com planter to
help remove crop residue from
the furrow without moving any
soil.
Ideally, the trashwheels
could create a residue-free
environment with wanner soil
temperatures that should
enhance germination and
emergence. Growers who
rented these specially adapted
planters to plant their com
established side-by-side com
parisons for the research group
to monitor.
The trashwheels used in this
study were made by John
Deere. They were installed in
conjuction with the exsiting no
till coulter, not in place of the
coulter, since there have been
some concerns about taking the
no-till coulter off to install the
trash wheel. This necessitated
some modifications to the plan
ters to accomodate these.
Measurements being col
lected from each field include
plant populations, soil tempera
tures, and grain yield. Accord
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the population data is still being
analyzed, but large differences
between the coulter systems
have not been apparent, prob
ably because this was such a
good year for com to emerge
from the ground.
A second objective of the
study has been to evaluate
Sold at today’s market price,
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potential problems growers
encounter when adopting no
till. Among the problems
encountered so far are insect
problems in sod fields, weed
escapes in spring-killed sods,
and uneven manure applica
tions before planting. None of
these problems appear insur
mountable, however.
1993 marks the year in
which the United States will
export its 50-billionth bushel
of com. In 1991 the top five
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Union, South Korea. Taiwan
and South Africa, reports the
U.S. Feed Grains Council.
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