xt7h9w08xt23 https://exploreuk.uky.edu/dips/xt7h9w08xt23/data/mets.xml   Kentucky Agricultural Experiment Station. 1961 journals 109 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.109 text Progress report (Kentucky Agricultural Experiment Station) n.109 1961 2014 true xt7h9w08xt23 section xt7h9w08xt23 RESULTS OF THE KENTUCKY
I·iB_R ID POPCORN PERFORMANCE TRIALS
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ww, K, MARTIN, P, A. LOEEPEL, AND H. R. RICHARDS
PROGRESS REPORT 109
(Filing COd€: 1)
UNIVERSITY OF KENTUCKY
AGRICULTURAL EXPERIMENT STATION
DEPARTMENT OF AGRONOMY
LEXINGTON

 _ RESULTS OF THE KENTUCKY HYBRID POPCORN
PERFORMANCE TRAILS — 1961
By W. K. Martin, F. A. Loeffel, and H. R. Richards A
Production of popcorn in Kentucky during 1961 totaled 59 million pounds - a new record
and a 72—percent increase above the 34 million pounds produced in 1960. Kentucky ranked
fourth behind Indiana, Iowa, and Illinois in 1961 as compared with sixth in 1960. Total value
of the crop was $1,733,000, a $753, 000 increase from last year. An average yield of 2, 350
pounds per acre for Kentucky far exceeds the previous 2, 050—pound record set in 1958.
Plentiful moisture, use of better hybrids, and improved weed control contributed to producing
. the new record yields.
Popcorn hybrids developed in the breeding programs at the Indiana, Iowa, and Kansas
agricultural experiment stations are included in the evaluation studies in Kentucky. Land
was made available for these studies by Orrin Hull of Murray State College, Murray, Ky. .
and Murray Wall, Hopkinsville, Ky. Their assistance and interest are appreciated and
acknowledged.
Three-, two- and one—year summaries are presented in Tables 1-3. Table 3 is the
summary of the 1961 experiment grown at Hopkinsville. Although the popcorn test at Murray
was harvested this year, the data were too variable to have any significance and are not re-
ported.
Purdue 303 continued to be the best white hybrid available for planting in Kentucky.
On the basis of the two—year agronomic data, P303 and Purdue 9315, an experimental white
hybrid, appears to be comparable in ear height, yielding and standing ability. Purdue 9318
and Purdue 9338, two white experimental hybrids, were the highest yielding for the two—year
period, but were inferior in standing ability andpossess higher ear placement than P303.
On the ba sis of three—year data. Iopop 8, P32 and Purdue 83249 appear to be the best
performing yellow hybrids tested. KP 1101, a Kansas experimental appears promising and
worthy of consideration on the basis of its outstanding record for standing ability. The per ~— .
formance of P406A and P632 was disappointing in comparison with the other hybrids tested.
Yellow hybrids, Iopop 8, Iowa 3595, KP 1148, P32, Purdue 8367 cms and Purdue 8376
cms performed well on the basis of the two—year data. P406A and P632 were low in yield
and inferior in standing ability and were not comparable to the other yellow hybrids tested
during this period. All other hybrids were comparable and approximately equal in yielding '
and standing ability.
EXPERIMENTAL PROCEDURES
Field Design
Each hybrid was planted in four plots at each of the two locations. with individual plots
being two hills wide and five hills long. These plots were located in different parts of the
testing field to minimize cultural and soil differences.
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The corn fr·om each plot was harvested and weighed individually. The yield of the hybrids
was determined and is reported 0n the basis of pounds of ear corn per acre with a moisture
content of 13. 5 percent. Adjustments were made also for missing hills but not for other va ri `
ation in stand. Therefore. the yields at each location reported in this report constitute an
average yield of the four plots after all adjustments were made.
ll/loisture .
The moisture content at harvest is the best measure of relative maturity of hybrids One
hybrid may be considered to be earlier than a second hybrid if its moisture content at ha r·vest
is consistently lower. Maturity thus determined is not absolute but is relative to the hybrids W
being compared.
The moisture content of the grain of individual hybrids was determined at harvest by
removing two rows of kernels from each of eight ears selected at random from each of the
l`i rst three replications. The grain from the 24 ears was thoroughly mixed. and the moisture
content of a 150 gram sample was determined with a Steinlite moisture meter.
Rae; L<>¤1¤‘aia..
Plants which lean from the ba.se 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 ob
tained by counting the number of root—lodged plants and dividing by the number of plants
present
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A plant is considered to be stalk—lodged when the stalk is broken between the ear bearing
mode and ground level. This attribute is computed in a manner similar t.o that indicated for
iooi lodging
Ear lleight
Ear height. distance from the base of the plant to the point of attachment of the upper ea rz
was measui ed visually. using a scale with one—foot intervals. Visual ratings were made on
1`onr plots ol` each hybrid at each location.
Strut
All tests are planted at the rate of 5 kernels per hill and the resulting plants thinned to
3 per hill. The stand percentage was computed on the basis of the total plants present divided .
by the number ol` plants which would have been present if all had survived.
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