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Proceedings of the International Plant Propagator's Society

Vol. 46

Oak Production in Alkaline Soil: Advantages of Quercus ×schuettei

Michael Yanny

pp: 473-475

Oak production is a challenging endeavor. At Johnson's Nursery, alkaline soil conditions and a B&B production system make it even more difficult. Our recent use of Quercus ×schuettei (Q. bicolor × Q. macrocarpa) has made field growing oak trees easier and more successful.

Historically, Q. bicolor, swamp white oak, has been one of the best species of oaks for B&B nursery production and landscape use. It has been easy to transplant because of its relatively fibrous root system. Swamp white oak has shown tolerance to heavy, compacted soils and has an adequate growth rate. Unfortunately, at Johnson's Nursery where the soil pH ranges from 7.2 to 7.6, Q. bicolor usually becomes chlorotic due to nutrient deficiency. Lowering the pH with applications of granular sulfur to the soil has not been a satisfactory remedy for this problem.

Quercus macrocarpa, bur oak, is another oak species with great potential as a landscape plant. This long-lived species has an adequate growth rate and is

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