xt7zs756gc2d https://exploreuk.uky.edu/dips/xt7zs756gc2d/data/mets.xml   Kentucky Agricultural Experiment Station. 1967 journals 168 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.168 text Progress report (Kentucky Agricultural Experiment Station) n.168 1967 2014 true xt7zs756gc2d section xt7zs756gc2d I RESULTS QF THE
By J. F. Shane
Progress Report 168
February 1967
Department of Agronomy

J. F. Shane
The objective of the Kentucky Sorgo Performance
V Test is to provide sorgo sirup producers with an estimate
V of the relative performance of sorgo varieties. Varieties
. in the test include those being grown in the Southeastern
Region of the United States and several of the more
promising experimental lines developed by the U. S. De-
partment of Agriculture at Meridian, Miss. The 1966 test
_ included eight varieties grown in a randomized block
design of five replications.
Stalk samples of all varieties tested in the South-
eastern Region are sent to Meridian, Miss., or Cairo,
Ga., for milling, juice analysis and sirup processing.
The sugar content of the juice and the amount that
can be extracted are two important characteristics of
sorgo varieties. The percentage of total soluble solids
in the juice, most of which are sugar, is determined by
using a sugar hydrometer. Juice extraction at Meridian
and Cairo is considerably better than that obtained by
small mills. `
Sirup of high quality should reach a finishing tem-
perature of 108OC (226OF) at usual altitudes in Kentucky.
» A standard finishing temperature of 1100C (2300F) is
used in processing sirup at Meridian. Difficulty in pro-
ducing an acceptable sirup might be encountered if this
temperature cannot be reached. The sirup is taken off
when the foam begins to roll and the temperature is more
or less static. Raising the temperature higher would tend
to soorch the sirup and produce a darker color. Williams
and Sugar Drip failed to boil down to sirup density in 1966.
The test was heavily infected with a virus disease
similar to the maize dwarf mosaic that has been reported
in corn. Williams, Sugar Drip and three of the experi-
mental lines exhibited considerable stunting, probably
associated with the disease. Symptoms of the disease
were found in all varieties except Wiley.
Data for the 1966 test are presented in the table
which follows. Differences of less than the figure given
as the L,S,D, are not significant.

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