12—Lancaster Farming, Saturday, Feb. 9, 1974
Hartwig Suggests . . .
Double
Double planting of corn
and crownvetch is suggested
for farmers wanting to
harvest com while starting
crownvetch as a perennial
sod cover for continuous no
tillage com. The crownvetch
can be broadcast at com
planting time, says Dr.
Nathan L. Hartwig, assistant
professor of weed science at
The Pennsyvlama State
University.
Hartwig reports a number
of fanners have been in
terested in growing
crownvetch for seed.
Broadcast-seeding at time of
planting com should use 5
pounds of inoculated seed
per acre. Crownvetch can
also be applied in a band
over the row, from a planter
insecticide box, using 5
pounds of seed per acre in
the band.
In fields of established
crownvetch, yields of com
can be high. Yields averaged
165 buushels of shelled com
per acre this past season at
Penn State’s Agronomy
Research Farm in Centre
County. The com plots were
fertilized with only 94 pounds
of nitrogen per acre, 14
pounds of superphosphate,
and 14 pounds of potash. The
fields were irrigated twice
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Plant Corn,
during dry spells.
Phosphorus and potassium
levels were high in the Penn
State plots since the area had
been in crownvetch for a
number of years with
adequate fertilization.
Weed killers must be
chosen carefully to avoid
injury to crownvetch
Chester County Holds
Annual DHIA Banquet
More than 240 members
and guests convened for the
annual Chester County Dairy
Herd Improvement
Association banquet last
Thursday evening at the
Guthridgeville Fire Hall.
Also attending were five
DHIA supervisors, Peter
Emig, head of the Penn State
milk testing lab, and Herb
Gilmore, a Penn State dairy
specialist.
John Stanton, Lincoln
University, is president of
the Chester County group.
Elmer Young, West Grove,
is vice-president, and Paul
King, Cochranville, is
secretary-treasurer.
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Crownvetch
seedlings in new plantings,
Hartwig cautions. In com*
fields, the only herbicide now
available for safe use is
butylate-sold as Sutan 6E,
Sutan 6E with safener, or
Eptam with a safener known
as Eradicane.
Double planting of
crownvetch in soybeans, can
In the group’s annual
report, seven herds were
shown to have produced an
average of more than 600
pounds of fat per cow for the
past year.
Jefferson D. Yoder,
Elverson RDI, topping all
other county herds with an
average of 17,353 pounds of
milk and 696 pounds of fat in
a 51.2-cow herd.
Comparable figures for the
other six top herds were:
Jacob K. Stoltzfus Oxford
RD1,16,000 milk, 630 fat, 54.8
cows; George P. Lamborn,
Nottingham RDI, 15,819
milk, 624 fat, 34.5 cows.
David E. Weaver, Glen-
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also be successful, the Penn
State weed scientist points
out. For weed control in
soybeans, the herbicide
trifluralin (Treflan) or
vemolate (Vernam) should
be used at recommended
rates.
A few farmers in Penn
sylvania have grown
crownvetch as a seed crop
for a number of years,
Hartwig observes. Where
these farmers want to grow
com and crownvetch, the
crownvetch can almost be
disregarded in using weed
killers. Established
crownvetch tolerates all
herbicides that are cleared
for use on no-tillage corn.
Research at Penn State has
shown that up to 4 pounds of
atrazine or simazine can be
applied in any one growing
season without killing
crownvetch.
Where crownvetch is
established, however, far
mers may find this legume
competing excessively with
moore RDI, 16,194 milk, 620
fat, 37.5 cows.
John S. Stoltzfus, Atglen
RD1,15,032 milk, 613 fat, 51.8
cows. Paul King,
Cochranville RDI, 15,771
milk, 608 fat, 72.9 cows.
Donald Hostetter, Jr.,
Sadsburybille, 16,045 milk,
606 fat, 74.1 cows.
The next directors meeting
will be held with the
supervisors at Engleside
Restaurant in Thorndale,
beginning at 11:00 a.m.
v
VAN DALE
CALEB M.
WENGER, INC.
R.D.I DRUMORE CENTER, QUARRYVILLE, PA.
PHONE 548-2116
corn. To hold back growth of
crownvetch, use one-half
pound of 2,4 D low volatile
ester or amine per acre, or
one-fourth pound of dicamba
(Banvel) per acre. Apply
this a few days before
planting com and preferably
after there are 3 to 6 inches
of new crownvetch growth in
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Since crownvetch is a
legume it will fix nitrogen
from the atmosphere into the
4oil. This can be a vital
factor, Hartwig says, in light
of the high cost and probable
shortage of nitrogen fer
tilizer next year and possibly
for years to come.