Ø The implement such as mould board
plow, disk plow work on top soil but chisel plow is used for subsurface
tillage.
Features:
Ø Chisel plow work in hard pan
Ø The chisel plow goes upto a depth of
25-38 cm
Ø In erodible soils the chisel plow
has been considered the best to overcome the problem of runoff.
Ø It consist of two and three shanks
fixed at box type structure
Ø The shank may be straight, curved or
tapered
Ø The horsepower can be cut to 25 % by
using tapered or curved shanks as compared to straight shanks.
Ø The bottom part of shanks are fitted
with tine or shovel
Ø If narrow tines are used, the
implement will go a greater depth.
Ø It works in hard pan below level of
plowing
Ø It is identical in shape to chisel
plow except that a single shank is used.
Ø It works upto a depth of 100 cm
Ø It goes much deeper
Ø It is simple in construction
Ø It is operated in sub soil below to
break hard pan and make soil suitable for root development.
Ø It is usually operated after 3-5
years.
Ø It should be operated in dry and
hard land, if it is operated in wet soil, it will produce a compacted path in
soil which is of little value.
Ø The horsepower required to pull a
soiler is 65-85hp.
Sub-
soiler:
Ø It is identical in shape to chisel
plow except that a single shank is used.
Ø It works upto a depth of 100 cm
Ø It goes much deeper
Ø It is simple in construction
Ø It is operated in sub soil below to
break hard pan and make soil suitable for root development.
Ø It is usually operated after 3-5
years.
Ø It should be operated in dry and
hard land, if it is operated in wet soil, it will produce a compacted path in
soil which is of little value.
Ø The horsepower required to pull a
soiler is 65-85hp.
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