Effect of Fertilizer Treatments on Production of Oregon Roses Tested

Fertilizer
The 'Peace' rose variety was used in a study to determine standard fertilizer treatments for the Oregon rose industry. Nitrogen, potassium, phosphorus, magnesium, and certain minor elements were all tested in the treatments.

Control Suggested for Stripe Disease in Lily Fields

Bulbs
Stripe disease, also called "crazy disease" by growers, was researched in an effort to find a control method. The Oregon State University affiliated author also discusses future research to determine whether the disease was a virus or a fungus.

Infected Geraniums Spreading Verticillium Fungus

Greenhouse Crops
Verticillium fungus was a growing concern for geranium growers when this article was first published. The author was especially concerned for home growers and the impact Verticillium fungus would have on Oregon Willamette Valley geranium growers.

Nitrogen, Phosphorus Increase Croft Lily Bulblet Yields

Bulbs
Croft lily growers could use the bulblets to increase their stock quickly. Research conducted on Croft lilies production examined the conditions that produced the best bulblets, the results of the research are discussed by the Oregon State University affiliated authors.

Boron Deficiency Diagnosed in OSU Carnations

Fertilizer
After observing the yellowing and dying of carnation stem tips in the Portland, OR and Corvallis, OR research was conducted on the William Sim carnation to find out the cause of the growth issues. The results of the study indicated a possible boron deficiency and are discussed by the author.

Examine Clematis Roots for Nematode Infestation

Greenhouse Crops
Control of nematodes in clematis was researched in this Oregon State University affiliated study. Root rot nematode, Meloidogyne hapla, one of the most devastating pests of the flowering clematis is discussed specifically by the author.

Christmas Tree Economics: Establishing and Producing Douglas-Fir Christmas Trees in Western Oregon

Christmas tree
A helpful publication for anyone considering growing Douglas-fir Christmas trees or for current growers. Covers cost of production and provides necessary tools for financial management and decision making.

Christmas Tree Economics: Establishing and Producing Noble Fir Christmas Trees in Western Oregon

Christmas tree
A helpful publication for anyone considering growing Noble Fir Christmas trees or for current growers. Covers cost of production and provides necessary tools for financial management and decision making.

Developing Sheared Douglas-fir Christmas Trees

Christmas tree
Discusses how to select a plantation, choose quality seed, prepare the ground for planting, lay out a plantation, plant stock, manage weeds and pests, and plan for the next crop. Describes preshearing, basal pruning, shearing techniques, and shearing tools. Provides a year-by-year cultural schedule that covers planting to harvest. Includes 3 tables, 15 figures, and sources of additional information.

Developing High Quality True Fir Christmas Trees

Christmas tree
Describes the current market for true firs, characteristics of true-fir species, and the pests and environmental problems that harm firs. Details how to purchase top-quality seed, choose a growing site, design a plantation, and fertilize, as well as combat diseases, insects, animals, competing vegetation, and erosion. Covers shaping trees, including correcting multiple leaders, replacing lost leaders, pruning, and dealing with lamas growth. Provides a 9-year schedule of suggested activities for producing quality trees. Includes 6 tables, 19 figures, and a list of additional sources of information.

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