Table 5 Linear mixed regression model parameter estimates (SE) for cover crop effects on profit margin ratios across all main crops, grain and oilseed, and vegetable crops from 2007 to 2016 (Sites A and B combined) at Ridgetown, Ontario.
Cover crop | Profit margins without C pricing | Profit margins with C pricing at $20 Mg−1 | Profit margins with C pricing at $50 Mg−1 | ||||||
|---|---|---|---|---|---|---|---|---|---|
All main crops | Grain and oilseed crops | Vegetable crops | All main crops | Grain and oilseed crops | Vegetable crops | All main crops | Grain and oilseed crops | Vegetable crops | |
Intercept (no cover crop) | 1.0000*** | 1.0000*** | 1.0000*** | 1.0000*** | 1.0000*** | 1.0000*** | 1.0000*** | 1.0000*** | 1.0000*** |
(0.0274) | (0.0276) | (0.0343) | (0.0279) | (0.0303) | (0.0344) | (0.0293) | (0.0367) | (0.0346) | |
Oat | 0.00280 | 0.0096 | 0.0386 | 0.0331 | 0.0211 | 0.0399 | 0.0406 | 0.0383 | 0.0419 |
(0.0249) | (0.0321) | (0.0322) | (0.0245) | (0.0319) | (0.0323) | (0.0248) | (0.0347) | (0.0325) | |
Cereal rye | 0.0141 | − 0.1035*** | 0.0813** | 0.0315 | − 0.0636** | 0.0858*** | 0.0576** | − 0.0037 | 0.0926*** |
(0.0249) | (0.0321) | (0.0322) | (0.0245) | (0.0319) | (0.0323) | (0.0248) | (0.0347) | (0.0325) | |
Oilseed radish (OSR) | 0.0903*** | − 0.0348 | 0.1617*** | 0.1054*** | 0.0002 | 0.1656*** | 0.1281*** | 0.0525 | 0.1713*** |
(0.0249) | (0.0321) | (0.0322) | (0.0245) | (0.0319) | (0.0323) | (0.0248) | (0.0347) | (0.0325) | |
OSR + Rye | 0.0526** | − 0.0706** | 0.1230*** | 0.0702*** | − 0.0302 | 0.1275*** | 0.0965*** | 0.0303 | 0.1343*** |
(0.0249) | (0.0321) | (0.0322) | (0.0245) | (0.0319) | (0.0323) | (0.0248) | (0.0347) | (0.0325) | |
