Which implement is used for secondary tillage operation?

✅ Explanation: Secondary tillage operations are performed after the initial plowing to further break down the soil, level the field, and prepare the seedbed. Disc ploughs, harrows, and even MB ploughs (depending on the context) can all be used for these purposes.
Key Points
Tillage: It is the mechanical manipulation of soil with tools and implements for obtaining conditions ideal for seed germination, seedling establishment, and growth of the crop.

• Objectives of tillage:
-To create conditions in the soil suited for better growth of crops.
-To control weeds effectively.
-To make the soil capable of absorbing more rainwater.
-To mix up manure and fertilizers effectively in the soil.
-Providing adequate seed-soil contact permit water flow to seed and seedling roots.

• Primary tillage:
-The operations are performed to open up any cultivable land to prepare a seedbed for growing crops known as primary tillage.
-Animal-drawn implements in primary tillage mostly include MB-plough.
-Tractor-drawn implements include MB-plough, disc plough, subsoil plough, chisel plough, and other similar implements.
Secondary tillage
-Lighter or finer operations performed on the soil after primary tillage is known as secondary tillage.
-Harrowing is to be done to a shallow depth to crush the clods and to uproot the remaining weeds and stubbles.
-Seedbed preparation and intercultural operations are done up to a depth of 15 cm.
-Secondary tillage implements: Disc harrow, spike tooth harrow, spring tooth harrow, acme harrow, etc.