- any physical soil manipulation which changes the
structure of the soil, kills weeds, and rearranges dead plant materials
Classification of Tillage
1. Primary tillage - initial cutting, breaking and usually inversion
of the soil. Implements used are
moldboard, disc and chisel plows and subsoilers cutting the soil to a depth of
6” to 36”. Often referred to as plowing.
2. Secondary tillage - subsequent breaking, pulverization and leveling
of the soil making it ready for planting. Implements used are disc, spike-tooth and spring-tooth harrows preparing
the soil to a depth of 3” to 6”. Often
referred to as harrowing.
3. General-purpose tillage – Combined primary and
secondary tillage in one operation.
Implements used are the rotavators and floating tillers cutting the soil
to a depth of up to 6”. Often referred
to as rotavating.
Terms Used in Plowing
1. Land – unplowed soil.
2. Furrowslice – soil cut, lifted, inverted and
thrown to one side of the plow bottom.
3. Furrow – trench or canal left by the
furrowslice.
4. Backfurrow – raised ridged when two furrowslices
overlap each other.
5. Deadfurrow – trench left equal to two furrows
when furrowslices are thrown on opposite sides.
6. Furrow wall – unbroken side of the furrow.
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