The watchman and southron. [volume] (Sumter, S.C.) 1881-1930, 1910-03-23

from the shoulders. One should
gather and husk only the corn from
the first plant in each hill (sub-stand-
ard) and the other should gather
ana musk only the corn from the sec
ono plant in each hill (tested plants
and the work on each hill should be
done simultaneously. The corn thns
gathered should be weighed separate
~ and the weights recorded with the
proper row number.
Yield per Stalk-The yield per
stalk should then be determined for
poth the sub-standards and the test
ed plants.
Calculated Standards-To secure
the calculated standard for each row
the difference between the sub.stand-
ards and the standard (selection used
In comparing all the sub-standards)
should be added to or taken away
from the sub-standard, according as
the case demands. For example, sup
pose that the standard had produced
.o625 or pound Gone ounce) more
than sub-standard (a) this difference
would then be added to the stalk
yield Of the sub-standard in each of
the first ten rows and the results
would be recorded under the head
ing Calculated Standard" IF the
standard yield had been .O625 of a
pound less than the sub standard. the
difference would have been taken
away from the standard, and the re-
suits placed under the same heading.
"Difference between Calculated
Standard and Tested Plants-under
the last heading of the record-sheet
we simply fill in the difference be-
tween the tested plants and the CAL
culated standard. Where the tested
plants have yielded more than the
calculated standard the difference Is
written with a plus sign before it, TN
less With minus sign before it.
These differences represent the true
relative values Of the selections test =
ed and those largest differences with
the plus sign before them indicate the
selections that should be planted and
propagated pure.
Remnants to Retain for Future Test.
When the comparative values Of
the selections have been determined
as above described, all Of those rem
nants should be discarded whose low
productiveness bars them from being
classed with the twenty per cent that
gave highest yields The high yield
Ing twenty per cent should still be
retained for another years test
Total Worth of Seasons Selections.
1.-The total worth of the seasons
selections should be determined by
substracting the average stalk yield
or the sub-standards and the stand
ard from the average stalk yield of
the sub-standards and the standard
from the average stalk yield Of all the
selections tested.
Second Years Work.
Test Plot.
"COntents-The second years work
should consist of a test similar to
that of the first year. It should con-
tain twenty per cent of the previous
years selections, and enough new Sc
lections to complete the tests reuuir-
ed number.
Numbering the Selections-The
new selections shall be numbered sim
ply 1. 2, 3, etc, as in the past season,
and should be planted in rows of the
same number. The previous breeding
plot selections shall be given the num-
Der of the row on which they are now
planted, but this number shall also
De accompanied by the old row num-
Der, written afterward. Suppose the
first old selection this year is planted
in row 1, and the last year it was
planted in row 33, it's complete num-
Der thls year Will then be 1-33
These old selections should be so ar
ranged that one will occur in each
OF the first two rows of each SUBJ
standard.
Breeding Plot.
"Object-The breeding plot is for
the crossing and preparation of the
nigh yielding strains found in the
previous years test plot.
"ISolatiOn-Ths plot should be so
Isolated that the pollen from other
corn can not be blown upon it,
"Land-The land does not neces-
sarily have to be uniform, but should
be of average fertility and we'll culti-
waited, so that as much seed can be
grown ic npccil1o