| Impact ID | 7965 |
| Impact Type | Commerce |
| Study Type | Experimental |
| Study Location | Laboratory |
| Impact Description | Experiments conducted in Sunderland, Massachusetts showed that Echinochloa crus-galli (barnyard grass) growing with tomato crops reduced the marketable fruit weight from 26-84% depending on density. |
| Reference | 24890 |
| Cost | |
| Location | Sunderland, Massachusetts, USA |