Progress 01/01/07 to 12/31/07
Outputs OUTPUTS: The 2001 and 2002 peach rootstock trials were terminated in 2006 in all locations in North America. A report was presented at the International Rootstock Symposium in Hungary in 2006 entitled Performance of Prunus rootstocks in 2001 NC-140 peach trial (Sodininkyste Ir Darzininkyste 25(3):327-333). A final report is in submission to the Journal of the American Pomology Society. In addition the Peach Physiology trial was terminated in 2006 and that report is in preparation. A new peach rootstock trial is scheduled for planting during February 2009. The apple trial has identified at least one very promising rootstock out of the Geneva rootstock series that gives adequate dwarfing with appropriate precosity in northeast Georgia. It has survived well since its planting in 2003.
PARTICIPANTS: This project is performed in collaboration with other peach and apple rootstock testing sites in North America, represented among the NC-140 Multi-State Project members (http://www.nc140.org).
TARGET AUDIENCES: The outcomes of these trials are targeted to the tree fruit nursery industry that ultimately serves the tree fruit growers of North America.
Impacts It was determined that none of the peach rootstocks tested in the 2001 and 2002 trials could survive on peach tree short life (PTSL) replant sites, but the VVA1 and Penta rootstock appear promising with dwarfing and semi-dwarfing characteristics, respectively. They survived well in non-PTSL replant sites and produced excellent yields without reducing fruit size. These trials were conducted at standard spacings and horticultural trials at more dense spacings are required to adequately test the capacity of these rootstocks to support production of the scion variety. More time is needed to make conclusions about the impact of the apple rootstock trial.
Publications
- Reighard, G., T. Beckman, R. Belding, B. Black, J. Cline, W. Cowgill, R. Godin, M. Kaps, T. Lindstrom, D. Ouellette, L. Stein, K. Taylor, C. Wqalshm, M. Whiting, and T. Robinson. 2006. Performance of Prunus rootstocks in 2001 NC-140 peach trial. Sodininkyste Ir Darzininkyste 25(3):327-333.
- Reighard, G., J. Anderson, R. Andersen, W. Autio, T. Beckman, T. Baker, R. Belding, G. Brown, P. Byers, W. Cowgill, D. Deyton, E. Durner, A. Erb, D. Ferree, A. Gaus, P. Hirst, M. Kaps, N. Miles, F. Morrison, S. Myers, D. Oullette, R. Perry, C. Rom, W. Shane, B. Taylor, K. Taylor, C. Walsh, and M. Warmund. 2004. Eight-year performance of 19 peach rootstocks at 20 locations in North America. Journal of the American Pomological Society 58:174-202.
|