PERFORMANCE OF NEW PRUNUS ROOTSTOCKS FOR PEACH IN SOUTH CAROLINA
Three rootstock trials consisting of Redtop on 14 rootstocks, Redhaven on 9 rootstocks and Redhaven on 11 rootstocks were planted in 2001, 2002 or 2003, respectively in the Piedmont (2001, 2002) and Sandhills (2003) of South Carolina. In the 2001 and 2002 plantings, Cadaman®, SLAP, Lovell, Pumiselect® and Guardian® SC-17 were the most vigorous; and Adesoto 101, Julior, Jaspi, Mr.S. 2/5, K146-43, VVA-1 and VSV-1 were the most dwarfing rootstocks. Plum rootstocks Julior, Jaspi, Adesoto 101, Mr.S. 2/5, VSV-1 and VVA-1 had significant root suckering. Mortality was high for Adesoto 101 and Jaspi. Many Cadaman® trees died of unknown causes by 2005. Within cultivars, there was a 1-2 days range in bloom date and a 4-5 days range in maturity date among rootstocks. Trees on Penta, Julior and Adesoto 101 bloomed earliest, and trees on Cadaman® bloomed last. Redhaven fruit from trees on Mr.S. 2/5, Adesoto 101, VSV-1 and VVA-1 rootstocks matured earliest, 4-5 days before Lovell. No rootstock produced fruit significantly larger than those on Lovell. Trees on Mr.S. 2/5 and Jaspi produced the smallest fruit. Trees on Cadaman®, SLAP, SC-17, Bailey and Lovell had the highest fruit yields, while those on Julior, Jaspi, Mr.S. 2/5, VSV-1 and VVA-1 had the lowest. Trees on Bailey had the highest cumulative yield efficiency. Most dwarfing rootstocks except VSV-1 had low yield efficiencies. At the Sandhills trial, which was on a severe bacterial canker replant site, all trees on Adesoto 101, Monegro, and VVA-1, and most trees on K146-43 died as a result of bacterial canker. Lovell, Mr.S. 2/5 and Pumiselect® were the only rootstocks with 100% survival in 2005.
Reighard, G., Ouellette, D. and Brock, K. (2008). PERFORMANCE OF NEW PRUNUS ROOTSTOCKS FOR PEACH IN SOUTH CAROLINA. Acta Hortic. 772, 237-240
almond, plum, Prunus cerasifera, P. domestica, P. insititia, P. persica, P. pumila