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Percentage increase in maize yield of legume-maize plots over maize-maize plots (rotation benefit) with or without residue.
| Treatments | 2008 | 2009 |
|---|---|---|
| Velvet bean-maize | 147% | 129% |
| Cowpea-maize | 33% | NA |
| Soybean-maize | 27% | 43% |
| Velvet bean-Maize*Residue | 130% | 111% |
| Cowpea-maize*Residue | 10% | NA |
| Soybean-Maize*Residue | 2% | 11% |
Note: NA not applicable (no rotation benefit).
