Primary Tillage - Objectives, Mould Board Plough , Disc Plough, Chisel Plough, Subsoiler , Components and Functions, Types, Advantages and Disadvantages
The initial major soil working operation designed to plough the soil deeply to
reduce soil strength, cover plant materials and rearrange aggregates is called primary
Objectives of primary tillage a.
To reduce soil strength b.
To rearrange aggregates c.
To cover plant materials and burry weeds d.
To kill insects and pests
The implements used for primary tillage are called as primary tillage implements.
They include many animal drawn and tractor drawn implements. Animal drawn
implements mostly include indigenous ploughs and mould-board ploughs. Tractor drawn
implements include mould-board ploughs, disc ploughs, heavy duty disk harrows,
subsoil ploughs, chisel ploughs and other similar implements.