xt7gqn5z7h5r https://exploreuk.uky.edu/dips/xt7gqn5z7h5r/data/mets.xml   Kentucky Agricultural Experiment Station. 1957 journals 048 English Lexington : Agricultural Experiment Station, University of Kentucky Contact the Special Collections Research Center for information regarding rights and use of this collection. Kentucky Agricultural Experiment Station Progress report (Kentucky Agricultural Experiment Station) n.48 text Progress report (Kentucky Agricultural Experiment Station) n.48 1957 2014 true xt7gqn5z7h5r section xt7gqn5z7h5r " Results of the
. KENTUCKY SOYBEAN VARIETY
PERFORMANCE AND FERTILIZER TESTS
1956
. By J.F.Freem¤n, S.H.PhiIlips, E.C.Da||, and H.R. Richards
$09q10FKE~/E;
‘ Progress Report 48
_ February I957
i Kentucky Agricultural Experiment Station
University ot Kentucky
Lexington

 RESULTS (lg THE KENTUCKY SOYBEAN ’
VARIETY PERFORMANCE AND FERTILIZER TESTS ·
l 9 5 6
Recommended Varieties: {
CLARK, WABASH, LINCOLN - Northern and Eastern Kentucky *
CLARK, PERRY, OGDEN — Southern and Western Kentucky
Recommended Soil Treatment:
lf quick tests indicate that the soil is moderately or strongly acid ‘
use ground limestone at rate of Z or 3 tons per acre respectively; if low
in available phosphorus use fertilizers to supply up to 80 pounds of PZOB
per acre; and if low in available potassium use fertilizers to supply up to ‘
80 pounds of KZO per acre. Apply limestone and fertilizers either before
or after plowing. To avoid injury to seedling soybeans, do not drill ferti- -
lizer in contact with the seed. Soybeans respond well to the use of needed
lime and fertilizers on other crops in the rotation ahead of the soybeancrop.
 
The soybean variety tests reported herein were designed for the
evaluation of varieties which are commonly grown or appear promising '
for use in Kentucky. The fertilizer test was designed to test the response
of soybeans to the addition of lime, phosphorus, and potassium to the soil, 4
either singly or in various combinations and according to the need as indi-
cated by rapid chemical tests of the soil. The 1956 results of the uniform
tests of experimental strains of soybeans conducted at Henderson and Lex-
ington in cooperation with the U. S. Regional Soybean Laboratory, Urbana,
Illinois, will be reported in their Progress Report to be issued in 1957. `
The location of the various tests is indicated in Fig. 1. The Hen-
derson county and Hickman county tests were located in the main soybean-
producing areas of the state on bottomlands of streams which are tributary
to the Ohio and Mississippi Rivers respectively. The Fayette county test
was located on upland soil of central Kentucky.
Methods Used: ‘
The variety tests were planted in 4-row plots with three replica-
tions and in a randomized block design. The rows were 19 feet long and
36 inches apart. A 16—foot section was harvested from each of the two
center rows. Beans were planted at a rate of 12 seeds per foot of row.
The fertilizer test at Henderson was planted with Cla rk variety in the
same manner as the variety test at that location except that rows were q
40 feet long, and the treatments were in quadruplicate. Commercial
( 2)

 T inoculant was used on seeds at time of planting in the fertilizer tests,
_ but none was used for the varietytests where inoculated beans had been
grown on the land the preceding year. The attempt was made to follow
best cultural practices at all locations.
~ Yields: Seed weights were recorded after the seed of all plots
had reached a uniform moisture content. Then weights were calculated
· to bushels -per -acre basis.
Oil Content: Percent of oil was determined from a composite
sample of seed from all replications in each test in 1955 and are shown
with yield data for that year. Analyses were made at the Experiment
_ Station chemical laboratory. Percent oil is expressed on moisture-
free basis.
` Seed Size is reported as weight in grams per 100 seeds.
Lodging notes were recorded at or near maturity according to
the scale shown in footnote to each table.
Height of plants was determined as the average length of plants
in a plot from ground to the top extremity at time of maturity.
~ Maturity is taken as the date when the pods are dry and most
of the leaves have dropped. It is expressed as days earlier (—) or
' later (-3-) than Perry as a reference variety.
· Seed Quality is rated from l to 5 according to the scale shown
as a footnote to each table.
Interpretation of Data
The difference in yield between varieties or soil treatments
I necessary for reasonable assurance that such an inherent yield poten-
I tial exists, has been calculated and is given in a footnote to each table.
Unless the yields of the two varieties or the two soil treatments being
compared differ by as much as or more than the figures shown, little
confidence can be placed in the apparent superiority of one variety or
‘ soil treatment over the other under the conditions of the particular test.
— Data on agronomic characteristics other than yield have no: been
analyzed statistically; however, small differences between any two
varieties or treatments are likely to be of little importance and should
not be considered strongly indicative of a true difference.
Duration of Tests: The results of evaluating varieties or sui}
Q treatments over a period of several years are more trustworthy than
__ those from a single year. A given variety may be outstanding in per—
formance one year and show less desirable characteristics another
» year. Results over a period of years tend to average these fluctuz tions.
Yield data for more than a single year are given in the tables along with
those of 1956.
_ (3)

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I

 TABLE 4 — Effect on yield of Soybeans in 1955 and 1956 of Limestone
and fertilizers used for the 1955 crop.
Information regarding cooperators, location of test farm, soil des -
_ cription, dates of planting, killing frost and width of rows is the same
as that shown in Table 1.
Soybean Variety used: Clark, Seed lnoculated both years.
Soil Test Results Before Treatment: Moderately acid (pH 5. 8);
P = low; K = very low.
in Comment: Test was planted at optimum date and soybeans came
- came up a good stand and grew under nearly ideal conditions of
weather and culture during both years.
Treatment, Rate /Acre   Mean Yield
Lime- Fertilizer -- lb. 4 Reps.2/
stone N - PZO5 - KZO Bu/A -
·· 1955 1956
 
· O O 0 O 34. 6 31. 1
ZT O O 0 37. 5 Z7. 6
- ZT O 80 0 36. 6 32. 8
ZT 0 0 80 38. 9 30. 4
_ O 0 80 80 39. 9 Z9. 9
ZT 0 80 80 44. 2 34. 8
l  
1/ ln 1955 limestone and fertilizers were applied broadcast on
. — plowed ground and disked in. 400 pounds per acre of 0-20-20
fertilizer would supply the equivalent of 80 pounds PZO 5 and
  80 pounds of KZO as used for last two treatzrxents. In 1956
, no additional treatment was made.
2/ Yield differences of less than 5.5 bu. per acre in 1955 not
_ significant. (Odds 19:1}. Yield differences of less than
5. 3 bu. per acre in 1956 not significant. (Odds 19:1).
(7)

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