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- Author or Editor: S. L. Doud x
- HortScience x
Abstract
Trunk bark thickness of 6 peach clones was significantly affected by seedling root-stocks of peach (Prunus persica (L.) Batsch). Of the 7 rootstocks tested, Siberian C invariably induced the thickest bark in the scion while Lovell and Halford induced the thinnest scion bark. However, Siberian C grown as unbudded seedling trees did not produce thicker bark than the other rootstocks, similarly grown. The effect was not site- or cultivar-dependent.
Abstract
Visual rating scales were developed for evaluating tissue injury in peach trees [Prunus persica (L.) Batsch] in the orchard due to cold/winter temperatures and bacterial canker (Pseudomonas syringae van Hall) development. The numerical ratings on a scale of 1 to 9 separately describe key stages of damage and its severity due to cold and bacterial canker and are portrayed pictorially for clarity. Accurate estimation of tree status at very early stages of injury and good correlation with ultimate tree survival have been possible through the use of these rating scales. This information has been incoporated in the data collection for a regional research project dealing with the development and evaluation of rootstocks for peach in the southern United States and also is under consideration for use in another regional project involving peach in addition to apple, pear, and cherry.
Abstract
Effects of 8 peach seedling rootstocks on tree growth, survival, and fruit yield of ‘Redhaven’ and ‘Loring’ peach scion cultivars were tested in Alabama, Arkansas, Georgia, North Carolina, and South Carolina. Lovell seedling rootstock was a standard for comparison. Six years of data indicated that Siberian C was not an acceptable rootstock because tree survival and fruit yield were low. Halford was equivalent to Lovell for tree growth, fruit yield, and survival. Fruit size was unaffected by rootstock. Nemaguard and 2 North Carolina selections were resistant to root-knot nematodes (Meloidogyne spp.) but they were not resistant to ring nematodes [Criconemella xenoplax (Raski) Luc and Raski]. Soil fumigation improved tree survival in nematode-infested soil.