CORN WEED
MANAGEMENT
PROGRAMS
William S. Curran
Assistant Professor
Weed Science
Penn State
No single herbicide program
or control strategy is best in all
situations. Some strategies
require additional trips, specific
application timings, or even
specialized equipment.
The following herbicide
programs may require addilion
You don't have to look for to find high marks for HyPerformer Seed Com.
Throughout com country, the yields of HyPerformer brand
corn hybrids were consistently above average.
They earned the name — HyPerformers.
Ask us for the area results on these high performing hybrids.
HS 9843 / HS 9704 / HS 9424 Silage Hybrids
HS 9773 / HS 9843 / HS 9704 Grain Hybrids
HYPERFORMER VARIETIES ARE AVAILABLE THROUGH THE FOLLOWING DEALERS:
John J. Hoover Tim Schadler
Blain, PA Fogelsville, PA
717-536-3597 610-285-6876
T&S Sales
Bethel, PA
717-933-4725
OR THE FOLLOWING
Woodstown, NJ Shrewsbury, PA
609-769-0147 717-235-7961
Performance of seed may be adversely affected by environmental conditions cultural practices changes in disease races
insects and other factors beyond HyPertormer Seed Company s control The limitations of warranty and liability
on each bag ot HyPertormer Seed Company s seed sold are part of their terms of sales thereof
al strategies for the control of
other weeds that are also pre
sent. With all these weeds and
herbicide programs, a follow
up cultivation may provide
additional control.
Triazine-Resistant
Lambsquarters
Option 1; Use Prowl herbi
cide delayed preemeigence or
early postemergence in con
ventional, reduced, or no-till
com. Apply 2.4 to 3.6 pint
Prowl 3.3 E per acre a few days
after planting up until the com
reaches the 4-leaf stage. Prowl
Lehr's Feed & Farm Supply Grange Store
Pine Grove, PA Green Park, PA
717-345-3309 717-789-3416
Marion Center Milling Co.
Marion Center, PA
412-397-2100
HELENA
Mifflinville, PA Warriors Mark, PA Welisboro, PA
717-759-1311 814-632-5177 717-724-5800
will also help on pigweed, vel
vetleaf, and most annual gras
ses. Prowl by itself will not con
trol emerged weeds. The cost of
Prowl is approximately $8 to
$l2 per acre. To avoid injury
problems with Prowl, do not
apply at planting. Delay appli
cation until com leaches the
spike stage. Also, be sure the
seed furrow is completely
closed before applying. .
Pluses
Cost
Residual control
Grass 1 & some broadleaf
Option 2: Apply Banvel ear
ly postemergence in com. App
ly 1 pint/acre from spike to the
5-leaf stage of com. Banvel is
also active on most annual
broadleaves, plus it will sup
press broadleaf perennials.
Including a nonionic surfactant
at 0.125 percent will increase
CHEMICAL LOCATIONS:
Com Tin, Lancasttr Farming,
activity, but may also increase
the potential for injury. Do not
apply 1 pint to com greater than
8 inches tall. Do not use
preemergence on soils with less
than 2 percent organic matter or
on coarse-textured soils. The
Pluses
Cost
Other broadleaves
Minuses
Injury risk
Application timing
May need additional grass/
nutsedge/broadleaf
r. March 1
one pint rate of Banvel costs
about $9 per acre. DicamhMhc
active ingredient in Banvel, is
also available in the prcmix
Marksman (dicamba + atra
zine) and in Clarity.
Minuses
Slight injury risk
Additional trip?
Vapor drift
No grass/hutsedge
(Turn to Pago 20)
19