Secondary Tillage, Sowing and Planting Equipment: Harrows, Cultivators, Seed Drills and Planters

Detailed Analysis of Planter Metering Components:
In a horizontal plate precision planter:

• Cut-off Mechanism (Option 2): A spring-loaded cutoff pawl or wiper brush positioned directly above the seed plate cells that wipes or brushes away excess seeds, ensuring that only one seed remains per cell pocket before reaching the delivery point. Hence, Option 2 is correct.
• Knock-out Mechanism (Option 3): A star wheel or roller ejector located over the discharge hole that pushes/knocks the retained seed out of the cell into the seed tube.
• Edge Drop & Flat Drop (Options 1 & 4): Refer to the orientation/geometry of cells along the periphery of the seed plate, not the wiper mechanism.

Detailed Analysis of Broadcaster Functions:

• Primary Functions of a Broadcaster: A seed or fertilizer broadcaster has two essential functional duties:
• Meter the seed uniformly at a regulated application rate from the hopper (Statement B).
• Scatter and distribute the metered seed uniformly across a defined ground swath width by centrifugal spinning disk or pendulum action (Statement C).
• Furrow Opening, Depositing, and Covering: Furrow opening (A), placing seed in furrows (D), and covering/compacting soil (E) are exclusive functions of seed-cum-fertilizer drills and planters. Broadcasters scatter seed directly onto the soil surface without opening furrows.