*lB—Lancaster Farming, Saturday, July 12,1980
As small gram farmers
swing into high gear during
this year’s harvest season,
many will experience some
loss of gram crop due to poor
combme adjustment.
This loss may seem small
when looking at the loss from
a particular field. But over
the harvesting season the
combine’s grain losses
represent a significant cost
due to lost tune, labor, seed,
chemicals, land use, ana
machinery value.
Gary L. Smith, extension
agricultural engineering
specialist at the University
of Maryland: suggests that
gram loss due to the combme
can be minimized by proper
calibration. Smith offers the
following pointers for
calibrating combmes:
First, determine the
preharvest gram loss. Pick
an area of the gram field that
is a good representation of
the entire field. You should
pick a minimum area of ten
square feet Count the
number of seeds on the
ground ahead of the combme
York hog show
(Continued from Page Al 7)
East Berlin and Tim Brian Bankert’s entry for 57
Ferrence of Spring Grove cents,
went to Thomas for 57 and 58 A total of 65 head of 4-H
cents. market hogs were exhibited
Other single buyers of
class winners were Godfrey
Brothers, of York who paid
57 cents to Shelly Bankert of
Red Lion R 3, and Gordon
Snyder Feed Company at
Brodbecks, which purchased
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Proper combme adjustment aids harvest
in your pre-selected area
This will determine your
preharvest loss.
Next, determine header
loss. Run the combme over a
small portion of the
preselected area and count
the number of seeds on the
ground behind the header.
Subtract the seed count m
the preharvest lost from the
seed count of gram behind
the header. This figure
represents the seed loss
attributed to the header.
Adjusting the header will
minimize the amount of
gram that is lost at the
header.
Then, combme the gram m
the preselected area
Ground speed should be
between 3.5 and 4.5 MPH.
The operator must make
sure he or she is cutting the
gram at the correct height.
To figure threshing loss,
count the seeds on the
ground after the combme
cuts the gram m the pre
selected area.
Add the seed count m the
preharvest loss to the seed
during the afternoon show
and evening sale. Judge for
the roundup was Dennis
Grumbme, Lebanon County
hog breeder A second
roundup will be held during
late summer
count m the header loss and
subtract this figure from the
amount of seeds that are left
on the ground after com
bining This gives you the
threshing loss of the com
bme. Threshing loss can be
minimized by adjusting the
sieves and/or fan of the
combine.
The net loss of the combine
can be calculated by adding
the seed count of the gram
left behind the header to the
seed count of the gram left
after combining the
preselected area. From this
total subtract the seed count
of the gram on the ground
before combining. This gives
you your net machine loss.
Dividing the net machine
loss by the area of the pre
selected spot of the field in
square feet will give you the
amount of gram loss per
square feet By consulting
the bushel-per-acre chart
you can determine your loss
m terms of bushels per acre.
At some point in har
vesting check the gram bin
for contamination This
check will determine if the
(Turn to Page Al 9)
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