xt77h41jjn79 https://exploreuk.uky.edu/dips/xt77h41jjn79/data/mets.xml   Kentucky Agricultural Experiment Station. 1959 journals 077 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.77 text Progress report (Kentucky Agricultural Experiment Station) n.77 1959 2014 true xt77h41jjn79 section xt77h41jjn79 ‘= Results of the
A KENTUCKY SOYBEAN VARIETY
PERFORMANCE AND FERTILIZER TESTS
1958
By J. F. Freeman, S- H. Phillips and H.R. Richards
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Progress Report 77 "
March 1959
Kentucky Agricultural Experiment Station
l University of Kentucky
Lexington

 X
RESULTS QE THE KENTUCKY SOYBEAN
VARIETY EERFORMANCE, DATE QF PLANTING, AND FERTILTEER $
Tasms 1958 .
2
Recommended Varieties:
CLARK, WABASH, LINCOLN - Northern and Eastern Kentucky
CLARK, PERRY, HOOD, OGDEN - South rn and Western Kentucky
Recommended Soil Treatments
If soil tests indicate that the soil is moderately or strongly
acid use ground limestone at rate of 2 or 3 tons per acre respec-
tively; if low in available phosphorus use fertilizers to supply
up to 80 pounds of PZOS per acre; and if low in available po- ‘
tassium 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 fertilizer 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 soybean crop.
The soybean variety tests reported herein were designed for
the evaluation of varieties which are commonly grown or a pear
promising for use in Kentucky. The fertilizer test was designed
to test the response of soybeans to the addition of lime, and
potassium to the soil, either singly or in combination and ac-
cording to the need as indicated by rapid chemical tests of the
soil. The 1958 results of the uniform tests of experimental
strains of soybeans conducted at Henderson and Lexington in co-
operation with the U. S. Regional Soybean Laboratory, Urbana,
Illinois, are reported in their Progress Report RSLM 200, March
1959.
The location of the various tests is indicated in Fig. l. The
Henderson 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 bottom land soil of central
Kentucky. The Caldwell county test was located on branch-bottom
soil. _
(2)

 g Methods Used
The variety tests were planted in h—row plots with three rep-
< lications and in a randomized block design. The rows were 19
feet long and 36 inches apart except at Hickman where rows were
no inches apart. A l6—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 Clark variety in the same manner as the variety test at that
location and the treatments were in quadruplicate. 4
The date of planting test at Henderson was designed to test
the effect of early, medium, and late planting upon the yield and
s agronomic characteristics of the early, medium, and late maturing
varieties - Clark, experimental Strain, and Hood. These varieties
represent maturity groups IV, V, and VI respectively. The attempt
was made to follow best cultural practices at all locations.
1 Yields: Seed weights were recorded after the seed of all plos
s had reached a uniform moisture content. Then weights were calcu-
lated to bushe1s—per-acre basis.
?
Oil Content: Percent of oil was determined from a composite
sample of seed from all replications in each test. Analyses were
made at the Kentucky Agricultural Experiment Station chemical lab-
oratory. Percent oil is expressed on moisture-free basis.
Seed Size is reported as weight in grams per lOO seeds.
Lodging notes were recorded at or near maturity according to
the scale shown in footnote to each table. i
Height of plants was determined as the average length of
plants in a plot from ground to the top extremity at time of ma-
turity.
_ 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 (+) than Perry as a reference variety.
Seed Qualit is rated from l to 5 according to the scale shown
as a footnote to each table.
(3)

 I
Interpretation of Data
The difference in yield between varieties or soil treatments
necessary for reasonable assurance that such an inherent yield ¢
potential 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 not
been analyzed statistically; however, small differences between
any two varieties or treatments are likely to be of little im- s ‘
portance and should not be considered strongly indicative of a
true difference.
Duration of Tests: The results of evaluating varieties or
soil treatments over a period of several years are more trust- y
worthy than those from a single year. A given variety may be
outstanding in performance one year and show less desirable
characteristics another year. Results over a period of years
tend to average these fluctuations. Yield data for more than ‘
a single year are given in th  tables along with those of 1958
except for Caldwell county where this was the first year.
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 Table 6 - Soybean yield in Lime & Fertilizer Test. Henderson County 1958 *
Information on location, co-operators, fertility level, soil type and kill-
ing frost date are same as shown in Table 1. $
Variety used: Clark
Results of soil test before soil treatm nt: moderately acid ,
(pH 6.9)
P · High; K · Low
Date planted: May 17, 1958 Row Width: 36 inches ’
Method of Treatment: Ground limestone and Potash fertilizer
were applied broadcast on proper plots after plowing, th n ~ '
disked in lightly to incorporate with soil, just ahead of
planting. Phosphate fertilizer treatment was not included
because soil tested high in P. _
Comment: Soybeans were planted about l week before optimum
date. They came up good stands and grew under excellent
conditions of weather and culture. Plants of all treatments
matured at about the same time - September 16 and varied
little in height or other visible characteristics.
Treatment Rate/Acre Mean Yield s
_ _ kl Re 1.
Limestone, tons Fertilizer, lb Bu/E
N - PZO5 - KgO
O 0 O O bO.2
2 O 0 O h3.9
0 0 0 80 145.5*
2 0 0 80 u5.0¤
Yield differences of less than 3.8 bu/A are not significant. (Odds 19:1). I
Thus, potash treatments with or without limestone resulted in significant
yield increases in comparison to the untreated check but limestone alone
did not.
(10) l

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(11)

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