Delaware reports ’Bl soybean checkoff results
NEWARK, Del. - Results of last
summer’s check-off supported
soybean projects at the University
| )f Delaware have now been
evaluated. It’s too soon to draw
conclusions from the single year’s
work, but those involved in the
studies noted several promising
.rends, the University reports.
The IStBl soybean check-off funds
Helped support a total of nine
srojecta at the University, in
cluding varietal screening for
soybean cyst nematode
resistance; a comparison of
suggested soybean fertilizer
programs; a study of the use and.
placement of nitrogen, phosphorus
and potassium on soybeans;
evaluation of soybean varieties for
no-till double-cropping; varietal
performance trials; a study of
interactions of varieties, row
spacing and planting dates, an
evaluation- of post-emergence
spray pressures, volumes and tip
patterns; a soybean seed ger
mination study; evaluation of
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soybean varieties for insect pest
resistance; and a study of the
response of soybean varieties to
the herbicide 2,4-DB. There was
also a report on the activities of an
agronomy assistant supported by
check-off money. Here are a few
highlights from those projects*.
• Scientists evaluated 16 ex
perimental and eight named
soybean varieties in a field heavily
infested with the soybean cyst
nematode and found good
resistance in a number of varieties
-now available for use in Delaware
fields. Some of the experimental
' lines also did well in spite of this
pest. These should be helpful in
developing resistant varieties even
better suited to Delaware growing
conditions.
• In a demonstration aimed at
comparing the effectiveness of
fertilizer recommendations from
four soil testing services used by
Delaware farmers (three com
mercial labs and the U. of D.),
actual soil analyses were very
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fertilizer recommended as a result
of the analyses varied con
siderably ampnglaboratories.
Hie yield per acre from
soybeans grown at two field sites
- Georgetown and Smyrna was
similar in spite of a range of $8.50
to $30.30 in cost of fertilizer applied
per acre. The University
laboratory recommended fertility
levels involving phosphorus and
potassium that resulted in the least
cost per acre at both locations.
• Narrow row spacing brought
higher yields in one part of another
study on the effects of variety, row
width and planting date on
soybeans. Researchers reported
that the average yield of all
varieties was nearly seven bushels
higher when row widths were
closed from 28 inches to seven
inches in an early planting at
Georgetown. Results were less
conclusive in a late planting there,
and in two plantings at Newark.
Investigators felt that available
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soil moisture may have been the
main reason beans planted July 3
at Georgetown faded to respond
favorably to close spacing of rows.
They also suggested that improper
variety selection and late plantings
were partly to blame for the
disappointing production record of
Delaware soybean growers over
the past six to eight years. Several
varieties in the later planting at
Newark did not mature before
killing frosts last fall
•Except for spider mites, the
1961 season lacked significant
pressure from major soybean
insect pests. Even so, two en
tomologists involved in another
check-off supported study were
able to establish a rating system
for evaluating insect injury on this
crop. Their preliminary work
showed that: soybean varieties
grown in Delaware exhibit some
injury even under low pest levels;
certain varieties appear to be
tolerant to low levels of the insects
encountered last summer; and row
48x66
48x72
54x65
54x72
Lancaster Farming, Satui day, March 27,1952—D23
spacing influences populations of
certain insect pests.
Funds to support these and the
other 1961 projects came from a
one-cent-per-bushel assessment
paid by each soybean grower in the
state. The fund is administered by
the Delaware Soybean Check-Off
Board.
Franklin District
hosts tour
CHAMBERSBURG The
Franklin County Conservation
District and Clugston’s Im
plements are co-sponsoring a no
till seeding demonstration on April
X, on the farm of "J. Wilbur
Burkholder, 3095 Grand Point
Road, Chambersburg. Actual
seeding will get underway at 1 p.m.
The ramdate is April 5, 1982 at 1
p.m.
Dale Clugston from Clugston’s
Implements will be donating the
HAYBUSTER, a no-till planter, for
Jie demonstration. The mam
aurpose of the demonstration is to
supply information and operating
arocedures of area fanners in the
county interested in renting a no
.ill planter.
. Information on renting the
lAYBUSTER and rental rates are
ivailable by contactmg the
•'ranlthn Conservation District
iffice, phone 717-264-8074.
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