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Charles Allen Bacon.

The Oliver plow book : a treatise on plows and plowing online

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It is a well known fact that grasshoppers lay their eggs
in nothing but hard ground. Infested fields will produce
grasshoppers the next year unless something is done to
prevent such a calamity. Whether or not a farmer expects
to plow the infested field in the fall he can very greatly
diminish the crop of grasshoppers the following year if
he will plow the preceding fall. There are plenty of sec-
tions in the United States where farmers could use the
disk plow earlier in the season for no other purpose than
this and save themselves several times the price of the
plow in the next crop.

As to the draft required to pull a disk plow there is no
evidence to show that it pulls any lighter than a mould-
board plow which turns over the same volume of earth.
Many people deceive themselves into thinking that a
disk plow pulls lighter. The reason for this is probably
because the disk plow does not cut quite so wide a furrow
as the mouldboard plow. This characteristic gives the
disk plow an advantage over the mouldboard plow in
that whether one cuts a wide or narrow furrow with the
disk it always does an equal quality of work, whereas a
mouldboard that cuts either a wider or narrower furrow
than the width intended decreases the quality of plow-
ing. A too wide furrow leaves an unplowed strip and in
a too narrow furrow the ground is not properly pulver-
ized.

The disks are sharp and placed on the frame so that
they present a cutting edge to the soil very similar to



200 THE OLIVER PLOW BOOK

that of a knife blade when one whittles a stick. The
disk has the advantage over the knife blade in that the
edge of the disk cutting the soil is constantly changing.
For this reason the edge of a disk will retain its sharp-
ness a great deal longer than the edge of a share. This
fact very probably has a great deal to do with the
superiority of this type of plow over the mouldboard
plow in exceedingly hard ground.

The principle of the draft of a disk plow is entirely
different from that of a mouldboard plow. The shape
of the share and mouldboard of the mouldboard plow
cause the bottom to be pulled into the ground. On the
other hand a disk plow must be forced into the ground
by weight and draft combined.

In operating a disk plow the hitch in front should
always be adjusted so as to keep the front of the plow in
the ground and sufficient weight added to the rear to
keep it in the ground at the desired depth.




Notice the curved furrow wall and bottom and the way the earth is
delivered as a turned furrow. It is entirely different from that of a
mouldboard plow.



14 DAY USE

RETURN TO DESK FROM WHICH BORROWED
LOAN DEPT.

This book is due on the last date stamped below, or

on the date to which renewed.
Renewed books are subject to immediate recall.



Slan'MFC




JREC'D LD




FEB 2 1959

















































LD 21A-50m-9 '58
(6889slO)476B



General Library

University of California

Berkeley





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Online LibraryCharles Allen BaconThe Oliver plow book : a treatise on plows and plowing → online text (page 10 of 10)