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Openers, Seed and Fertilizer Placement

The two basic opener designs used on conservation tillage seeders are disc and hoe openers. "Hybrids" of these two opener designs incorporate some of the same features of both disc and hoe type openers. Disc openers can be single or double disk, with gauge wheels mounted beside and in contact with the disc opener or with a trailing packer wheel functioning as a gauge wheel.

Basic Criteria for Effective Air Seeders

Opener Designs

Seed and Fertilizer Placement

Managing Crop Residue

Soil Disturbance

Depth Control

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