3—Lancaster Farming, Saturday, April 6, 1974
Nutsedge Control Program
Recommended by Penn State
Unless yellow nutsedge is University.
. ontrolled in cornfields, this In many areas, nutsedge
weed could become as or nutgrass is “sneaking up”
i •■oublesome as quackgrass, on farmers, Dr. Hart wig
.ic worst weed in cropland pointed out. About 20 percent
"rom New England to the of the corn acreage of
Mid-West, says Nathan L. Pennsylvania is now infested
Hartwig, weed scientist at with nutsedge, he claims,
'.-'he Pennsylvania State and the figure is increasing
P. L ROHRER & BRO., INC.
annually. Strangely, nut
sedge and quackgrass are
never found growing
together.
Extensive experiments by
Dr. Hartwig and associates
have found four herbicides
effective in controlling
nutsedge-Sutan, Eradicane
(a new eptam formulation,
AAtrex, and a combination
of AAtrex and Lasso. These
herbicides will also control
most annual weeds including
witchgrass, crabgrass, fall
panicum, and giant foxtail.
One year’s treatment of
cornfields will seldom
remove nutsedge (nut
grass), the studies have
found. Large numbers of
small underground bulbs,
much like onions, can
remain dormant in the soil
for a number of years. This
means herbicides must be
used for several years to
gain complete control of
yellow nutsedge.
Dr. Hartwig says Sutan
and Eradicane are the most
consistent herbicides of
those recommended. -Sutan
and Eradicane should be
applied before planting com
and should be worked into
the soil immediately since
they are volatile. Avoid
applying Sutan or Eradicane
to damp soil since as much
as 40 per cent can be lost in
20 minutes after application.
Use oae-half to two-thirds
gallon per acre of Sutan, plus
AAtrex SOW at a rate of one
and one-quarter pounds per
acre, or AAtrex 4L at the
rate of 1 quart per acre.
Work this into the soil twice
by disking, the second time
at a 45 degree angle to the
first. Eradicane should be
applied at a rate of one-half
gallon per acre.
Another effective treat
ment is to use AAtrex SOW at
2.5 pounds per acre, or
AAtrex 4L at 2 quarts per
John J. Hess, 11, Inc.
Ph. 442-4632
Paradise
West Willow Formers
Assn., Inc.
Ph-464-3431
West Willow
acre, right before planting.
Work this into the soil with
one disking. After the sur
viving nutsedge reaches a
height of 6 to 8 inches, treat
again with one and one
quarter to two and one-half
pounds of AAtrex SOW or 1 to
2 quarts of AAtrex 4L per
acre. This should be applied
with a non-toxic oil or other
“sticker.”
A fourth effective treat
ment is AAtrex SOW at one
and one-quarter pounds per
acre, or AAtrex 4L at 1 quart
per acre, plus Lasso at 2
quarts per acre. As with
Sutan, this herbicide should
be applied before planting
com. This treatment can be
worked into the soil up to a
week after application.
Sutan and Eradicane come
already mixed with a
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“safener,” since these should be no herbicide injury
herbicides without the to fall or spring seeded small,
“safener” are known to grains or spring seeded
injure certain com hybrids, legume or grass seedings.
Sutan and Eradicane will Consult your county agent
last 6to 8 weeks in the soil, for further details on control
AAtrex, at the recommended of yellow nutsedge in corn
rate, won’t last any longer, fields.
Dr. Hartwig says there