Table 2.
Descriptive statistics for climate and weed diversity variables for maize (ZeaL) and soybean (GlycL) production, where M, mean; SD, standard deviation; R, range; N, size and the percent of change in model parameters: for slope (it is estimated by rmax*a), yield potential K, and the maximum increase in crop yields rmax.
| Crop | Fit | Variable | M | SD | R | N | slope | % slope | % rmax | % K |
|---|---|---|---|---|---|---|---|---|---|---|
| ZeaL | L | tM/tMin | −14.18 | 252.60 | (−479.19; 388.53) | 118 | 0.44 | 0.00 | 0.00 | −16.30 |
| L | tmax/tMin | −17.31 | 335.89 | (−633.27; 521.03) | 118 | 0.49 | −8.28 | |||
| L | Shannon/tMin | 1.21 | 18.06 | (−45.07; 41.03) | 92 | 0.64 | −8.07 | |||
| L | Simpson/tMin | 0.46 | 8.53 | (−20.02; 15.85) | 92 | 0.61 | −8.18 | |||
| P | 118 | 1.12 | ||||||||
| GlycL | V | Eevenness | 0.52 | 0.25 | (0.16; 1) | 71 | 1.51 | 0.11 | 0.11 | 0.02 |
| V | Simpson | 0.40 | 0.23 | (0; 0.83) | 71 | 1.54 | 0.11 | 0.11 | 0.02 | |
| V | Shannon | 0.78 | 0.46 | (0; 2.07) | 71 | 1.53 | 0.26 | 0.26 | 0.05 | |
| V | Invsimp | 1.99 | 0.89 | (1; 5.90) | 71 | 1.53 | 0.60 | 0.60 | 0.12 | |
| V | Jevenness | 0.51 | 0.21 | (0.04; 0.99) | 69 | 1.54 | 0.12 | 1.22 | 0.02 | |
| V | Richness | 5.93 | 3.80 | (1; 18) | 71 | 1.56 | 1.86 | 1.86 | 0.33 | |
| P | 94 | 1.89 |
See Table 1 for more details.