Which of the following is a primary tillage implement?

✅ Explanation: A primary tillage implement is used for the initial breaking up of the soil. The M.B. plough (Moldboard plough) is designed to cut and turn the soil, burying crop residue and preparing a seedbed.

📌 Other Options Explanations:
-Harrow: A secondary tillage implement used for breaking up clods and leveling the soil surface.
-Cultivator: A secondary tillage implement used for weed control and seedbed preparation after the initial plowing.
-Sweep cultivator: A type of cultivator used for shallow cultivation and weed control.
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.