SRI Tech Note figure 3
![](https://images.echocommunity.org/437a4b8b-6b92-47db-a5a6-9826e9ee40cb/sri-tech-note-figure-3.jpg?w=400)
Figure 3. One example of a mechanical weeder with vertical rotating toothed wheels, often used with SRI. Plans are available at ECHO for this weeder and for a larger weeder with five wheels. Sketches of weeders by Paya deMarken, Peace Corps Volunteer in Madagascar.