xt7rfj29bf8x https://nyx.uky.edu/dips/xt7rfj29bf8x/data/mets.xml   Kentucky Agricultural Experiment Station. 1958 journals 062 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.62 text Progress report (Kentucky Agricultural Experiment Station) n.62 1958 2014 true xt7rfj29bf8x section xt7rfj29bf8x I Results 0f the _KENTUCKY
  HYBRID POPCORN
  PERFORMANCE TRIALS - 1 9 5 7
By F.A.\.oe·ffel, H.R.Rich¤rds and J. A. Shane
_ Progress Report 62
4 ,1 Filing C0de=I‘I
UNIVERSITY OF KENTUCKY
“ AGRICULTURAL EXRERIMENT STATION
  LEXINGTON
‘ JANUARY nasa
A

 1957   TRIALS ~
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1P;Ou;;;;On Murray Ke;;:c}q1;a;;;te College *
Hopkinsville Pzm1yri1:·G(;;ixI;\mIz;paI1;ox5z;cnt Assoc.

 ( RESULTS DF T1-{E KENTUCKY HYBRID POPTSIPN _
’ PBRFoP.MANc12 TRIALS-1957
A F`. A. Loeffel, H. R. Richards
  and J. F. Shane
_ Kentucky ranks fourth in the acreage devoted to popcorn
(5 in the United States following the states of Iowa, Indiana and
g Illinois. The annual income realized from popcorn by the farmers
‘ of Kentucky is approximately one million dollars. The importance
i of this crop in Kentucky is even greater when it is realized that
the production is concentrated in the Murray and Trenton areas.
, The evaluation of popcorn hybrids was initiated as a part
° of the corn improvement project of the Department of lmronomy to
_ _5 provide information on the relative performance of available
hybrids under Kentucky conditions. Hybrids developed in the
breeding programs of the Iowa, Purdue, Kansas and Georgia Agri-
t cultural Experiment Stations are included. Land is made available
  for these tests by the Pennyrile Grain Improvement Association
_ (W. G. Duncan III) and Murray Kentucky State College (A. Carman).
_ The cooperation of these institutions and persons is appreciated
{ and acknowledged.
Q,} One- and two-year summaries of these tests are presented
in tables 1-).;. The average yield of the 30 hybrids grown in
I 1957 at Hopkinsville was l4,l4ll pounds per acre and 3,3).;}:, pounds
· per acre at Murray. On the basis of two-year data (table 1),
several tentative conclusions may be made. All of the hybrids
_ are equal or superior to P32 in standing ability and have equal
'°A or lower ear placement. P303, a white hybrid, has an outstanding
· _, performance record and should be considered if white corn is
` grown. Pl;O6, another hybrid developed at the Purdue Agricultural
Experiment Station, is the highest yielding yellow hybrid tested.
It has satisfactory standing ability, appears to have high disease
resistance and excellent popping expansion. Iowa h258, a yellow
hybrid, is outstanding in its resistance to root and stalk lodg-
' ing and possesses satisfactory yielding ability.
" The following hybrids performed very well in the 1957
experiments and merit additional consideration (table 2):
Yellow Hybrids
5 Purdue Exp. 23156 Kansas K.P. 1116
» II H   Il II  
’ " " 6hlS Georgia GACP3999
) " " 6).048 Iowa b259
White Hybrid A
2. Iowa 2007
, *6 3)

 Experimental Procedures "_
Field Design
ach hybrid was planted in 14 plots at each of the two
locations, with individual plots being 2 hills wide and 5
hills long. These plots were located in different parts of e
the testing field to minimize cultural and soil differences.
Yield ·
The corn from each plot was harvested and weighed indi- ‘
vidually. The yield of the hybrids was determined and is
reported on the basis of pounds of ear com per acre with a
moisture content of 13.5 percent. Adjustments were made also ».
for missing hills but not for other variation in stand. There-
fore, the yields at each location reported in this report con- '=
stitute an average yield ofthe L; plots after all adjustments
were made. i
Moisture
The moisture content at harvest is the best measure of
relative maturity of hybrids. A hybrid may be considered to
be earlier than a second hybrid if its moisture content at •
harvest is consistently lower. Maturity thus determined is not
absolute but is relative to the hybrids being compared. ’
The moisture in the grain of individual hybrids was deter- A
mined at harvest by removing 2 rows of kernels from each of 8
ears selected at random from each of the first three replicatlons.
The grain from the 214 ears was thoroughly mixed and the moisture »;
content of a 150 gram sample was determined with a Steinlite
moisture meter. ’
Root Lodging
Plan s which lean from the base at an angle of more than
30 degrees from the vertical are considered to be root lodged.
This character is expressed as a percentage which is obtained a
by counting the number of root-lodged plants and dividing by
the number of plants present. ·
Stalk Lodging
A plan is considered to be stalk lodged when the stalk
is broken between the ear bearing node and ground level. This
attribute is computed in a manner similar to that indicated ,_
for root lodging.
Ear Height
ar height, distance from the base of the plant to the point
of attachment of the upper ear, was measured visually using a
scale with one foot intervals. Visual ratings were taken on four
plots of each hybrid at each location. __
(M)

 Stand
T All tests are planted at the rate of 5 kernels per hill
and the resulting plants thinned to 3 per hill. The percent
` stand was computed on the basis of the total plants present
s divided by the number of plants which would have been present if
all had survived.
_ Disease
" Uisease ratings were taken visually on a plot basis using
a scale of 1-5 with l being resistant. This rating measures
relative resistance to leaf blight caused by the fungus Helmin-
Q thospgrium Eydis.
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