xt76hd7nqg6n https://exploreuk.uky.edu/dips/xt76hd7nqg6n/data/mets.xml   Kentucky Agricultural Experiment Station. 1958 journals 064 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.64 text Progress report (Kentucky Agricultural Experiment Station) n.64 1958 2014 true xt76hd7nqg6n section xt76hd7nqg6n Results of the
KENTUCKY SOYBEAN VARIETY
PERFORMANCE AND FERTILIZER TESTS
l957
By J.F. Freeman, S·H.PhilIips and H.R.Richards
~x'39( 4/)2€‘·
 
Progress Report 64
February |958
Kentucky Agricultural Experiment Station
University ot Kentucky
Lexington

 RESULTS QQ THQ KENTUCKY SOYREAN
VIRIETY PERFORMANCE ANQ IERTILIZE  TESTS
1957
Recommended Varieties:
CLARK, WARASH, LINCOLN — Northern and Eastern Kentucky
CLARK, PERRY, OGDEN - Southern and Western Kentucky
Recommended Soil Treatment:
If quick tests indicate that the soil is moderately or strong
ly acid use ground limestone at rate of 2 or 3 tons per acre respectlv=
ly; if low in available phosphorus use fertilizers to supply u  to 80
pounds of P205per acre; and if low in available potassium use fertilize
to supply up to 80 pounds of K2O per acre. Apply limestone and ferti-
lizers 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 t·
evaluation of varieties which are commonly grown or appear promising
for use in Kentucky. The fertilizer test was designed to test the re-
sponse of soybeans to the addition of lime, phosphorus, and potassium t-
the soil, either singly or in various combinations and according to the
need as indicated by rapid chemical tests of the soil. The 1957 result=
of the uniform tests of experimental strains of soybeans conducted at _
Henderson and Lexington in cooperation with the U.S.Regional Soybean
Laboratory, Urbana, Illinois, will be reported in their Progress Report
to be issued in 1958.
The location of the various tests is indicated in Fig. l. ·=
Henderson county and Hickman cou ty tests were located in the main soy-
bean-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 rep-
lications and in a randomized block design. The rows were 19 feet long _
and 36 inches apart except at Hickman where rows were M2 inches apart.
A 16-foot section was harvested from each of the two center rows. Bean:
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 except that rows were 25 feet long, and t
treatments were in quadruplicate. Commercial inoculant was not used on
(2)

 seeds at time of planting because inoculated beans had been grown on
the land the preceding year. The attempt was made to follow best cul-
tural practices at all locations.
}_:].g_ZLc}_s: 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.
Loggipg notes were recorded at or near maturity according to
the scale shown in footnote to each table.
He;.g° ht of plants was determined as the average length of
plants in a plot from ground to the top extremity at time of maturity.
Maigggity 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 @lity is rated from l to 5 according to the scale
shown as a footnote to each table.
Integgretation 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 importance 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 trustworthy than
those from a single year. A given variety may be outstanding in perfor-
mance 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 the tables along with those
of 1957.
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(6)

 Table M - Effects on yield of soybeans of limestone and
fertilizers used directly for 1957 and 1955 crops and
the residual from 1955 use on 1956 crop.
Information regarding cooperators, location of test farm,
soil description, dates of planting, killing frost and
width of rows is the same as that shown in Table 1.
Soybean Variety used: Clark, Seed Inoculated both years.
1 Soil Test Results Before Treatment: Moderately acid
(pH 5.95; P = low; K = low.
Comment: Test was planted near optimum date and
soybeans came up good stands and grew under good conditions
of weather and culture during all three years.
Treatment, Rate?Acre;Z Mean Yield
M Re s.
as/A2?
Lime- Fertilizer —— lb. Direct Effect Residual
stone N — PZO5 — KZO 1957 1955 Aye Effect
g yrs 1956
O O O 0 33.¤ 3M.6 3U.O 31.1
2T O O O BU.3 37.5 35.9 27.6
zm 0 80 0 33.9 36.6 35.2 32.8
2T O O 80 37.7 38.9 38.3 30.b
0 O 80 80 35-9 39·9 37-9 29-9
zu! 0 80 80 36.6 141+.2 14o.1+ 31+.8
lj In 1957 and 1955 limestone and fertilizers were applied
broadcast on plowed ground and disked in. QO0 pounds
per acre of O-20-20 fertilizer would supply the equiva»
lent of 8Q pounds p20 and 80 pounds of 3 as used for
for last two treatmengs. In 1956 no additional treatment
was made on plots treated in 1955.
gf Yield differences for various treatments in 1957 were not
significant. Yield differences of less than 5.5 bu. per
acre in 1955 were not significant. (Odds 19:1). Yield
differences of less than 5.3 bu. per acre in 1956 not
s1g¤1f16a¤·¤. (odds 19:1).


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