The Rural Voice, 1989-01, Page 26L
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24 THE RURAL VOICE
average, 3 cultivator operations = 2
tandem disc operations = 1 moldboard
plowing. For example, if one opera-
tion with an offset disc gives the same
results as a moldboard plowing plus
one tandem disc operation, a consider-
able amount of energy can be saved.
If the same yields can be obtained
using only one operation with a chisel
plow, savings could be tremendous
• combine seeding and tillage into
a single operation whenever possible
• pay special attention to tractor
maintenance and weighting. Rear
wheels should have enough weight to
maintain traction, front wheels no
more than needed to maintain stability
and the ability to steer. Excessive
weight increases motion resistance
and, therefore, fuel consumption. This
effect is worsened by increased speeds
• select tractor size according to
the type and width of the implement,
using the governor control with trans-
mission -gear selection to maintain a
nearly full load on the engine, which
will then operate at top efficiency
• be very careful to maintain
cutting edges and soil sliding surfaces.
• do not cultivate every year for
crop production unless the anticipated
output/input ration is favorable
The preceding points apply to crop
production on soils cultivated yearly.
But before the decision to undertake
any tillage operation is made, the
anticipated output/input ratio of the
desired crop(s) on a particular soil
should be determined. The results of a
soil test should be considered as well,
since N, P, and K requirements will
influence the energy input which must
follow if tillage is carried out.
Obviously, tillage should not be
omitted at the expense of yield, but
tillage operations can often be reduced
and yields sustained (or, if overtillage
has been practised, yields can some-
times be increased). Overfilling helps
neither the crop, soil structure, nor the
pocketbook, so why bother?
Experimentation to determine
the optimum amount of tillage on
your farm could very well lower the
expenditure of energy, time and
money. Not only does this benefit the
individual farmer, but it contributes to
the overall conservation of our non-
renewable resources, upon which
modem agriculture is so dependent.°