Figure 1
From: Design and experiments with a single spiral fixed depth ditching and fertilizing machine

Schematic representation of the fertilizer construction, whose main parts are itemized as follows: 1. Tractor, 2. Transmission mechanism, 3. Fertilizer box frame, 4. Screw fertilizer distributor, 5. Fertilizer box, 6. Fertilizer delivery pipe, 7. Fixed depth ground wheel, 8. Grass scraper, 9. Ditching and fertilizing mechanism, and 10. Spiral blade.