Published February 1936. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published January 1941. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published February 1937. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Although many people enjoy deer, these animals can be destructive to gardens, orchards, and landscaped areas. Deer damage to ornamental plants is associated with a variety of factors including increasing numbers of deer, human population shifts to rural and suburban areas, and landowners prohibiting deer hunting.
Necrotic ring spot (NRS) is an important fungal disease of bluegrass turf in the Pacific Northwest. Many plantings of Kentucky bluegrass in central and eastern Oregon are severely affected.
Reprinted January 1995. Revised from two publications from two publications prepared by several OSU Extension specialists and agents. This publication replaces FG 61, Using Wood Ashes in the Home Garden, and FG 66, Fertilizing Home Gardens.
Published September 1965. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published 1970. Reprinted February 1983. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published January 1948. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
A wide variety of materials are sold as mulches and used in landscapes. This publication discusses mulching woody ornamentals (trees and shrubs) with organic materials. It covers the reasons for mulching, how to apply mulch, and how to maintain its beneficial effects over time. The information is presented in a...
Published June 1971. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published May 1974. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published October 1973. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Lasting, effective solutions to nitrogen (N) loss from container nurseries must
address layers of complexity ranging in scale from whole system nursery management
to gene expression. Group-based On-site Active Learning (GOAL) was developed to
aid nursery managers and related stakeholders (e.g. neighbors, policy makers,
regulating agencies, researchers) in developing a...
Many garden and landscape plants
are susceptible to one or more plant
diseases. Diseases can reduce the yield
of fruit and vegetable crops and disfigure
ornamental trees, shrubs, and
flowers.
Published September 1968. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published April 1954. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Plants need an adequate level of nutrients to thrive. This publication will help you ensure that your plants receive ample
levels of all nutrients for optimum yield, quality, and aesthetic value.
The central purpose of this study was to formulate and test a
model for securing information from the ornamental horticultural
industry that would provide a basis for curriculum development in
vocational agriculture. In order to develop the model, it was necessary
to accomplish the following:
1. Determine typical occupations in...
Proceedings of the 75th Annual Western Orchard Pest and Disease Management Conference, held January 10-12, 2001 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 67th Annual Western Orchard Pest and Disease Management Conference, held January 13-15, 1993 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 70th Annual Western Orchard Pest and Disease Management Conference, held January 10-12, 1996 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 68th Annual Western Orchard Pest and Disease Management Conference, held January 12-14, 1994 at the Imperial Hotel in Portland, Oregon.
Proceedings of the 66th Annual Western Orchard Pest and Disease Management Conference, held January 8-10, 1992 at the Imperial Hotel in Portland, Oregon.
This chapter addresses compost quality specifications, chemical and physical properties of compost, evaluation of compost maturity and stability, and variability in compost analytical data.
Published February 1915. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
The perception of a long-term cost advantage of synthetic infill turf systems relative to natural grass systems has contributed to a rise in their popularity in the USA. However, few comprehensive cost assessments of natural grass and synthetic infill systems exist. There are also no studies looking at interactions between...
Published May 1959. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
People have been growing and enjoying flowers and foliage plants for as long as history has been recorded. Once people’s needs were met for a place to live and food to eat, they began to grow and use plants for their beauty, fragrance, and shade, both indoors and out. Over...
Published June 1963. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Drosophila suzukii (Matsumura) (Diptera: Drosophilidae) is a pest of small fruits and cherries, and has also been noted to infest a variety of wild, ornamental, and uncultivated hosts. Identifying alternative hosts is critical for pest management. Research objectives were to: 1) survey fruits in the field for natural infestation of...
A sustainable landscape is more than exterior decoration. By using less water, fertilizer, and pesticides than a traditional
landscape, it has minimal impact on the environment. Thus, it is both aesthetically pleasing and environmentally sound.
Creating a sustainable landscape means working toward a thoughtful balance between resources used and results...
Published August 1981. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published March 1958. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This publication is offered as a reference to Integrated Pest Management (IPM) resources available to Oregon growers. It highlights university, federal, state, and private services and resources that provide support to growers in the implementation of IPM programs. The Guide consists of five sections: • An introduction to the National...
Published July 1980. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
A series of field experiments conducted at the Lewis-Brown horticulture farm at Oregon
State University evaluated the performance of four preemergence herbicides in simulated
ornamental shrub beds. Two natural products, corn gluten meal (CGM) and
meadowfoam seedmeal (MFS), were used along with two synthetic products, prodiamine
purchased under the trade...
We identified and evaluated a phytoseiid predator as a biological control agent of multiple spider mites pests that occur in ornamental nurseries. When comparing species, Neoseiulus fallacis (Garman) had a wider prey range than Galendromus occidentalis (Nesbitt), a higher probability of overwintering than Neoseiulus califomicus McGregor and was equally or...
Tall fescue [Schedonorus arundinaceus (Schreb.) Dumort.] is an important forage and turf grass seed crop in Oregon. Use of the stem-shortening plant growth regulator (PGR) trinexapac-ethyl (TE) has gained broad acceptance by tall fescue seed producers in Oregon and elsewhere world-wide as an economical agent of seed yield enhancement through...
Published January 1926. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Published February 1921. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Isolates of Botrytis cinerea from containerized conifer seedlings from two
nurseries in the Northern Rocky Mountains were exposed to the
dicarboximide fungicides vinclozolin and iprodione and the chlorinated
nitroaniline fungicide dicloran to evaluate occurrence and characteristics
of resistant strains. The isolates were grown on test media prepared by
incorporating the...
Tests were conducted to determine levels of tolerance of 10 Botrytis cinerea isolates from the Flathead Indian Reservation greenhouse (Ronan, MT) to six fungicides. In vitro growth and conidial germination on fungicide-amended potato dextrose agar were used as criteria for assessing tolerance. All tested isolates were tolerant to benomyl and...
Published June 2001. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Landscape plants are highly diverse and nursery producers often grow thousands of taxa to satisfy the varied needs and aesthetic tastes of consumers. Related to this diversity, ornamental plant breeders must be nimble and diverse in their approach. Two seemingly disparate studies were conducted to investigate improving ornamental shrubs –...
Rhododendrons and blueberries are popular
plants in home gardens in western Oregon and
Washington. Both are easy to grow in most
gardens, but problems with growth can occur if
the soil is not sufficiently acidic. Even in the
naturally acidic soil west of the Cascade Mountains,
soil often is not...
Five fungicides were evaluated to control Botrytis blight of containerized western larch seedlings at the Champion Timberlands Nursery, Plains, MT. Fungicides were applied at biweekly intervals before and after seedling inoculation with Botrytis. Vinclozolin (Ornalin®) caused severe phytotoxicity to seedlings, resulting in enhanced mortality and premature needle loss. Captan and...
Published 1913. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
As ornamental container nurseries face diminishing water allocations, many are looking to automated irrigation solutions to increase their water application efficiency. This thesis presents the findings of a study conducted at a commercial container nursery to determine 1) whether a capacitance or load cell sensor was better suited for monitoring...
The experiment was conducted to compare multiple pest (weed, soil arthropod and diseases) suppression by cereal cover crops in 'Selva' and 'Totem' strawberry. In addition, perlite was used to compare improvement of soil and root aeration which might modify strawberry black root rot complex. Small-seeded summer annual weeds were suppressed...
Each NWR within the U.S. Fish and Wildlife Service (FWS) National Wildlife Refuge System (NWRS) provides landscapes that contribute to conservation of wildlife and the habitats they depend on at local, regional, and national levels. The Integrated Pest Management Plan (IPMP) for a given refuge is a guide to how...
This book provides an illustrated guide to the identification and management of fungi, insects, and abiotic conditions that cause problems in Northwest bareroot conifer nurseries. A key to nursery pests offers initial guidance in identification. Separate chapters address individual pests with details on recognition, damage cycle, and management practices to...
Horticultural nurseries are heterogeneous and spatially complex agricultural systems, which present formidable challenges to management of diseases and pests. Moreover, nursery plants shipped interstate and internationally can serve as important vectors for pathogens and pests that threaten both agriculture and forestry. Current regulatory strategies to prevent this movement of pathogens...
Pesticides—including insecticides, acaricides, fungicides, and bactericides are essential for maintaining healthy crops with reliable yields and quality. In many instances, pesticides have become less effective as target organisms have developed resistance. The first record of resistance dates to 1897, when orchardists began having problems controlling San Jose scale (Quadraspidiotus perniciosus...
In an experimental field study, populations of gray-tailed voles (Microtus canicaudus) were exposed to a commercial formulation of vinclozolin, a fungicide effective for disease control on ornamental plants, turf grasses, and fruits and vegetables. Vinclozolin has been shown in laboratory experiments to behave as an androgen antagonist, impairing the reproductive...
Quarantine and inspection as generally applied,
both in the past and at present, has been limited to
horticultural plants and horticultural plant products
as nursery stock including trees, shrubs, vines, cuttings,
ornamentals, scions, buds, rootings, bulbs,
herbs, dried fruits, etc. This application is without
a question too narrow, as it...
The primary purpose of this study was to determine if inservicing Agriculture Science and Technology (AST) teachers over a new curriculum, resulted in increased student achievement. Specific objectives were to: 1) determine the subject areas (lessons) for a curriculum for teaching Integrated Pest Management (IPM); 2) develop a curriculum for...
Published March 1958. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
This guide provides nutrient and lime recommendations for establishment of turf and forage perennial ryegrass grown for seed in western Oregon. Healthy plants with adequate root systems are required to obtain the greatest return from your fertilizer investment. The nutrient recommendations in this guide assume that adequate control of weeds,...
Published October 1989. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the OSU Extension Catalog: http://extension.oregonstate.edu/catalog
Volatile loss rates of pesticides from turfgrass were measured using the Backward-Time Lagrangian Stochastic Dispersion model (Flesch et al., 1995). Solar radiation, ambient temperature, surface temperature, relative humidity, wind direction, and wind speed were monitored continuously. Growth regulator was applied to the turf plot several days before pesticide application to...
For the past 18 years, processed vegetable growers in the Willamette Valley, OR have had a vital partner in crop pest monitoring – Oregon State University’s VegNet. This regional pest monitoring program provides weekly activity reports for common broccoli, cauliflower, sweet corn, and snap bean pests. Data is published on...
This year, we commemorate 20 years of OSU’s VegNet (1996-2016). VegNet has become a well-known and utilized resource for processed vegetable growers, researchers, and Ag professionals throughout Oregon. This regional program provides weekly activity reports for common broccoli, cauliflower, sweet corn, and snap bean pests. The main goal of the...
Armyworms are the larvae (caterpillars) of the moth Pseudaletia unipuncta Haworth. This insect is a serious pest of turf, forage, and seed grasses; small grains; and corn throughout North America. Armyworms can cause sudden, extensive damage to these grasses and grasslike plants. Note that the armyworm does not feed on...