Costz per live 2.5 in. (6 cm) caliper live oak tree from six nursery production methods and under two landscape irrigation regimes.
| Production method | Cost per live tree | |
|---|---|---|
| Summer irrigationy | No summer irrigationx | |
| Plastic container | $445 | $588 |
| Plastic container with SpinOut | $445 | $784 |
| Air root-pruning (ARP) container | $445 | $672 |
| Low-profile ARP container | $445 | $1,176 |
| Root-pruned, field-grown B&B | $383 | $274 |
| Non-root-pruned, field-grown B&B | $383 | $383 |
↵z Cost (U.S. dollars) of purchasing, installing, and irrigating 14 trees divided by number of live trees (see Table 2) 1 year after transplanting.
↵y Trees irrigated four times in 9 days then twice weekly for 6 months (summer irrigation) or 5 weeks (no summer irrigation). Five gal (18 L) water was applied to the top of the root ball at each irrigation.