Influence of pruning method and level on vine growth, crop yield, and cropping indicies of Cabernet Sauvignon trained to a divided canopy quadrilateral trellis system, Oakville, California, 1992 season.
| Divided-canopy quadrilateral cordon | ||||
|---|---|---|---|---|
| Parameter | Standard spur pruneda | Hedge pruned | Minimal pruned | Signif. |
| a24 two-bud spurs. | ||||
| Total shoots/vine | 41 | 244 | 362 | 0.0001 |
| Total clusters/vine | 75 | 233 | 274 | 0.0001 |
| Shoot length (cm) | 127 | 56 | 32 | 0.0001 |
| Nodes/shoot | 29.4 | 15.3 | 11.0 | 0.0001 |
| Total leaf area/vine (m2) | 14.8 | 21.0 | 18.2 | 0.0001 |
| Crop yield/vine (kg) | 11.8 | 24.3 | 22.0 | 0.0001 |
| Pruning wt/vine (kg) | 1.41 | 2.14 | 0.46 | 0.0001 |
| Yield/pruning wt (kg/kg) | 8.4 | 11.3 | 47.8 | 0.0001 |
| Leaf area/crop wt (m2/kg) | 1.25 | 0.86 | 0.82 | 0.001 |
| Total soluble solids (Brix) | 22.1 | 20.4 | 19.9 | 0.001 |