ISHS Acta Horticulturae 346: V International Symposium on Vaccinium Culture
EFFECTS OF MEDIA, GROWTH STAGE AND REMOVAL OF LOWER LEAVES ON ROOTING OF HIGHBUSH, SOUTHERN HIGHBUSH AND RABBITEYE SOFTWOOD OR HARDWOOD CUTTINGS |
| Author: | C.M. Mainland |
| Keywords: | Vaccinium corymbosum, V. corymbosum x V. darrowi, V. ashei |
| Abstract:
Hardwood and softwood cuttings propagated outside with intermittent mist provide an economical means of producing planting stock. In southeastern North Carolina, hardwood cuttings have rooted most successfully when put into the propagation bed in March, while softwood cuttings have rooted consistently when collected and stuck in early to mid August. Hardwood cuttings of one highbush (HB), three southern highbush (SH) and two rabbiteye (RE) cultivars averaged 95% rooting in a medium of pine bark covered with a 1.0 cm layer of sawdust. Rooting exceeded 80% in all media combinations containing at least 50% bark or sawdust. Rooting in perlite, peat or sand was 75, 68 and 48% respectively. 'Croatan' HB rooting was 73% while the SH and RE cultivars ranged from 80 to 86% rooting. Both hardwood and softwood cuttings had the highest percentage rooting when taken from the terminal flush of shoot growth when all cultivars were combined, however, SH rooted equally well when the cuttings had a combination of growth from the terminal and previous flush. Removing the lower leaves of softwood cuttings before sticking into the sawdust medium increased rooting of HB and SH cultivars but reduced rooting of RE cultivars. | |
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