| Parameter estimatesb (±SE) | Volunteer corn | ||||||||
| Variable | WAE | a0 | b1 | R95c | Cobsd | Yield | |||
| Plants·m−2 | # m−2 | MT·ha−1 | |||||||
| Height (cm) | 4 | 100.6 | 1.35 | 0.56 | 0.68 | - | - | - | |
| 8 | 99.9 | 0.69 | −0.47 | 0.37 | > | > | > | ||
| 12 | 99.9 | 0.81 | −0.27 | 0.44 | > | > | > | ||
| Leaf collars (# plant−1) | 4 | 99.2 | 0.56 | −0.02 | 0.28 | > | > | > | |
| 8 | 99.3 | 0.53 | −0.48 | 0.28 | > | > | > | ||
| 12 | 100.1 | 0.44 | −0.51 | 0.24 | > | > | > | ||
| Leaf tips (# plant−1) | 4 | 99.8 | 0.43 | −0.20 | 0.22 | > | > | > | |
| 8 | 99.5 | 0.47 | −0.51 | 0.25 | > | > | > | ||
| 12 | 100.1 | 0.44 | −0.51 | 0.24 | > | > | > | ||
| Yield (MT·ha−1) | 99.0 | 0.85 | −2.86 | 0.49 | 1.7 | 0.6 | 0.4 | ||