35 Years of Specialty Horticultural Research

Nursery Crops
The results of 35 years of horticultural research in nursery and ornamental crops conducted at and in affiliation with Oregon State University are discussed. Topics include; defoliation problems, gladiolus, new crop development, lilies, holly, wood waste utilization, ornamental plant nutrition, graduate research assistance, rose and tree fruit rootstock research, ornamental research, root regeneration, propagation research, and plant growth research.

Short Days Hasten Easter Lily Flowering

Bulbs
Conditions and cultural practices to prevent "summer sprout" in 'Ace', 'Croft', and 'Nellie White' Easter lilies was the basis of two Easter lilies studies. Details and results of the experiments are discussed with the hope of conducting future research based on the results found.

Length of Old Home Interstem Makes Little Growth Difference

Nursery Crops
The dwarfing pear quince, Cydonia oblonga, was commonly used as rootstock but had compatibility problems resulting in some varieties requiring an interstock. A plot was established in Corvallis, OR in 1965 to determine the importance of interstem length in pear trees.

New Lily Deflowering Treatment Shows Promise

Bulbs
A report on the effectiveness of different treatments used to deflower 'Ace' and 'Nellie White' Easter lilies, tested in the 1971 growing season. Along with deflowering, observations were also made on foliar damage, plant height, and final bulb weight.

Hormone Applied to Tree Peony Stimulates Lateral Budding

propagation
Previous propagation experiments conducted by Dr. L.T. Blaney, Department of Horticulture at Oregon State University, on tree peonies produced minimal results and were the basis of the author's own propagation experiments on tree peonies. Several different hormones were used and produced favorable results.

Garden, Easter Lilies Infected by Viruses

Plant Disease
Prevention and control of viruses affecting garden and Easter lilies were studied in Oregon by the Oregon State University affiliated author. Specific viruses are discussed in regard to characteristics of the virus, descriptions of size, and affected lily cultivars.

Mugo Pine Selection and Propagation Studied

Breeding and Selection
Mugo pine, also called Swiss Mountain pine, was studied growing naturally and in gardens and arboretums in Europe by the Oregon State University affiliated authors. They share their findings and observations concerning Mugo pine selection and propagation.

Virus-Free Rose Clones Under Test

Nursery Crops
Development of virus free rose cultivars took place at the Oregon Agricultural Experiment Station in cooperation with California Agricultural Experiment Station and California Department of Agriculture. Information provided on how viruses are spread in roses and details of the study.

Heptachlor Controls Narcissus Bulb Fly

Insects
A study was conducted to determine the effectiveness of a specific control for bulb fly larvae (Merodon equestrist) on Narcissus bulbs. The results showed it was possible to control the pests while leaving the Narcissus bulbs in the ground for the desired 2-3 years without being damaged.

New Easter Lily May be Released

Plant breeding and selection
In an effort to find an Easter lily that was more resistant to virus and diseases, an Easter lily breeding program was established in 1960 in Harbor, OR. A cultivar was produced that was promising to the researchers working on the project.

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