xt7k9882m542 https://exploreuk.uky.edu/dips/xt7k9882m542/data/mets.xml   Kentucky Agricultural Experiment Station. 1960 journals 087 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.87 text Progress report (Kentucky Agricultural Experiment Station) n.87 1960 2014 true xt7k9882m542 section xt7k9882m542   Results of the
9 * KENTUCKY SOYBEAN VARIETY
  PERFORMANCE AND FERTILIZER TESTS
=“ 1959
9:
·  By J, F. Freeman and S. H. Phillips
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M Progress Report 87
’ Filing Code l-l
7 February l96O
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L University 0f Kentucky
_,i Agricultural Experiment Station
.._ Department of Agronomy
3 Lexington

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Hi RESULTS QE THE KENTUCKY SOYBEAN
` VARIETY PERFORMANCE, DATE QE PLANTING, AND FERTILIZER
su
TESTS -1959
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 s*T
_A; Recommended Varieties:
‘¢F& CLARK, WABASH, LINCOLN - Northern and Eastern Kentucky
__ CLARK, PERRY, HOOD, OGDEN - Southern and Western Kentucky
.e, 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-
’y ' .... . .
tively; if low in available phosphorus use fertilizers to supply up
,,; to 80 pounds of P2O5 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 fertilizer in contact with
— the seed. Soybeans respond well to the use of needed lime and fer-
_• tilizers on other crops in the rotation ahead of the soybean crop.
-·%
I5 The soybean variety tests reported herein were designed for the
-4. evaluation of varieties which are commonly grown or appear promising
for use in Kentucky. The fertilizer test was designed to test the
; 5 response of soybeans to the addition of lime, and potassium to the
‘ soil, either singly or in combination and according to the need as
` i indicated by rapid chemical tests of the soil. The 1959 results of
v the uniform tests of experimental strains of soybeans conducted at
ld Henderson and Lexington in cooperation with the U. S. Regional Soy-
gg bean Laboratory, Urbana, Illinois, are reported in their current
Progress Report.
T1
V The location of the various tests is indicated in Fig. l. The
’ Henderson county tests were located in the main soybean—producing
_Q area of the state on bottomlands of a stream which is tributary to
the Ohio River. The Fayette county tests were located on bottom
' land soil of central Kentucky. The Caldwell county test was located
on branch bottom soil.
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Methods Used
ci
The variety tests were planted in A-row plots with three repli-
cations 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 l2 seeds per foot of
row. The fertilizer test at Henderson was planted with Clark variety U}
in the same manner as the variety test at that location and the treat- _
ments were in quadruplicate. v
jr
The date-of-planting test at Lexington was designed to test the .
effect of early, medium, and late planting upon the yield and agronomic §~;
characteristics of the early, medium, and late maturing varieties- _
Shelby, Clark, and Hill. These varieties represent maturity groups °’
III, IV, and V, respectively. A similar date-of-planting test was con- *_(
ducted at Henderson in l958 and gave similar results as reported in ` `
Progress Report 77. K
The attempt was made to follow best cultural practices at all ¥·‘ ·
locations.
Farr
Yields: Seed weights were recorded after the seed of all plots
had reached a uniform moisture content. Then weights were calculated & 1
to bushels-per-acre basis. »
Qil Content: Percent of oil was determined from a composite sam- "
pre of seed from all replications in each test. Analyses were made at —g»‘
the Kentucky Agricultural Experiment Station chemical laboratory. Per-
cent 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. °‘
v
Height of plants was determined as the average length of plants ¥*_
in a plot from ground to the top extremity at time of maturity.
A r‘
A
Maturity is taken as the date when the pods are dry and most of A
the leaves have dropped. It is expressed as days earlier (—) or later p ‘
(%} than Perry as a reference variety.
A `
  A
Seed Quality is rated from l to 5 according to the scale shown "
as a footnote to each table. ,
, I
Un "
v

 e` Interpretation of Data
..4l The difference in yield between varieties or soil treatments
4 necessary for reasonable assurance that such an inherent yield po-
itential exists, has been calculated and is given in a footnote to
.;each table. Unless the yields of the two varieties or the two soil
"hreatments being compared differ by as much as or more than the
_;§igures shown, little confidence can be placed in the apparent super-
iority of one variety or soil treatment over the other under the
*§onditions of the particular test.
“¢ Data on agronomic characteristics other than yield have not been
Lgnalyzed statistically; however, small differences between any two
varieties or treatments are likely to be of little importance and
ishould not be considered strongly indicative of a true difference.
v.:
{ Duration of Tests: The results of evaluating varieties or soil
treatments over a period of several years are more trustworthy than
xhose from a single year. A given variety may be outstanding in per-
formance one year and show less desirable characteristics another
y year. Results over a period of years tend to average these fluctu-
rations. Yield data for more than a single year are given in the tables
`along with those of 1959 except for the date—of—planting test in Fayette
iqpunty where this was the first year.
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  -.1v>

 TABLE 5. - SOYBEAN YIELD IN LIME & FERTILIZER TEST. HENDERSON COUNTY'·i·
1958 & 1959
a? 
Information on location, co-operators, fertility level, soil type and v
killing frost date are same as shown in Table 1.
f;
Variety used: Clark
sg.
Results of soil test before soil treatment: moderately acid §
(pH 5.9) "
P . High; K = Low 8 j
May 17, 1958 F"
Date planted: June 4, 1959 Row Width: 36 inches P
rr-···"" •
Method of Treatment: In 1958 ground limestone and potash fer- ,
tilizer were applied broadcast on proper plots after plowing, ` .
then disked in lightly to incorporate with soil, just ahead of g
planting. Phosphate fertilizer treatment was not included *
because soil tested high in P. None was used in 1959. Y
Comment: In 1958 soybeans were planted about l week before
optimum date. They came up good stands and grew under excell-
ent 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. * `
In 1959 — Soybeans were planted about 2 weeks after *A
optimum date; came up good stands but grew under unfavorable wet-
weather conditions during most of the su mer. Downy mildew ,
caused some injury to plants and lowered seed quality to some
extent. Plants matured about September 24, 1959. ref
Treatment Rate/Acre Direct Residual "¥
Effect Effect '
1958 1959 ’
Limestone, tons Fertilizer, lb ¢*
0 0 0 0 40.2 55.7 ` 1
2 0 O O 43.9 33.9* ,,
0 0 O 80 43.8* 39.6* '
2 0 0 80 45.lx 38.9* *
Yield differences of less than 3.8 bu/A in 1958 and of less than lh;
2.9 Bu/A in 1959 were not significant (Odds 19:1). Thus potash b,
treatments with or without limestone resulted in significant yield
increases in comparison to the untreated check in both years but ! ny
limestone alone did not in the first year and resulted in a sig-
nificant decrease in the second year. *9
9:-
4 K?
t »
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