GROWTH AND PERFORMANCE OF OWN -ROOTED CHANDLER AND VINA COMPARED TO PARADOX ROOTED TREES

Two studies comparing own-rooted Chandler to nursery grafted Chandler on seedling Paradox rootstock were planted in Sutter and San Joaquin Counties in 2002. Additionally, own-rooted Vina is being compared to Paradox rooted Vina in Sutter County. The survival rate of own - rooted trees at both sites is 100 percent. The Paradox rooted Vina trees in Sutter County have remained the largest trees since planting but not significantly larger than own-rooted Vina in 2004. Both own-rooted cultivars and the Paradox rooted Chandler were not significantly different in size in 2004. Both cultivars on Paradox rootstock had significantly more yield than did the own-rooted trees. In San Joaquin County, there was no significant size difference between Paradox rooted and own-rooted Chandler in 200 4. The growth rate continued to be faster for own-rooted trees at both sites.