News and Events

Publications

Last revised February 15, 2010

AN-20, ammonium thiosulfate (and mixtures of these two materials), as well as monocarbamide dihydrogensulfate, can be used as N sources in a number of crops, while also providing ancillary weed control. The amount of nitrogen per gallon of material, the rate at which it is applied, and the phytotoxicity of the material determines the crops on which these can be used.

January 1, 2006

Myers, J.R. 2006.  Outcrossing Potential for Brassica Species, and Implications for Vegetable Crucifer Seed Crops of Growing Oilseed Brassicas in the Willamette Valley.  OSUES SR 1064.

August 15, 2012

A number of growers and agricultural professionals have asked me whether we are seeing resistance to mold in snap beans to our currently registered fungicides. The short answer is, not to my knowledge. In a normal year, the primarily threat to snap beans is white mold (Sclerotinia sclerotiorum). When we have a cool, wet spring, we see both white mold and gray mold (Botrytis cinerea). Gray mold is a game changer. Gray mold control requires a tank mix, early timing, and a two spray program.

January 1, 2008

Sullivan, D.M., J.P.G. McQueen, and D.A. Horneck. 2008. Estimating Nitrogen Mineralization in Organic Potato Production. Oregon State University Extension EM 8948-E. Corvallis, OR.

January 1, 2008

Ambrosino, M. 2008. Flea beetle management in organic potato production. Oregon State University Extension EM 8747-E. Corvallis, OR.

April 19, 2012

Riparian Habitat

riparian zone

Slough along the Willamette River (Photo by Cary Stephens, Greenbelt Land Trust)

Terrestrial Riparian
Riparian habitats are those adjacent to rivers and streams or occurring on nearby floodplains and terraces. Riparian habitats are shaped and maintained through seasonal flooding, scour, and soil deposition. 

Aquatic Riparian

December 1, 2011

 Purpose: 1) To determine the efficacy of post emergent applications of Coragen and Seduce insecticides for the control of cabbage root maggot in commercial cauliflower production. 2) To determine cabbage maggot fly, Dalia radicum, populations in transplanted cauliflower.

December 1, 2004

The general objective of the processing component of this research is to support the vegetable processing industry in the Willamette Valley by evaluating green beans developed in Jim Myers' bredding program in OSU's Horticulture Department.

December 1, 2004

The western spotted cucumber beetle (WSCB) is the major insect pest of the Willamette Valley vegetable industry, attacking snap beans, sweet corn, and cucurbit crops.

December 20, 2004

Objective: The objective of this project was to evaluate the effectiveness of the fungicide, Omega (fluazinam), in controlling Club Root fungus, (Plasmodiophora brassicae) in broccoli and cauliflower when applied preplant incorporated or as a transplanting drench.

Pscheidt, J. and C. Ocamb (eds.) 2012. Pacific Northwest Plant Disease Management Handbook. Available online at http://pnwhandbooks.org/plantdisease/ (verified 25 April, 2012).

To order a print copy of  the handbook, see http://pnwhandbooks.org/plantdisease/order-handbook

 

April 24, 2012

Natives

Trees

Oregon white oak (Quercus garryana)

Douglas fir (Pseudotsuga menziesii)

Red Alder (Alnus macrophyllum)

Pacific willow (Salix lucida ssp. lasiandra)

Oregon ash (Franxinus latifolia)

Black cottonwood (Populus balsamifera ssp. trichocarpa)

Shrubs

Red-osier dogwood (Cornus sericea)

California hazel (Corlus cornuta var. californica)

Black Hawthorn (Crataegus douglasii)

April 1, 2012

Author: Scott Leavengood

November 30, 2010

A full-color field guide to tree identification in Oregon. Contains keys to identifying common conifer and broadleaf trees and discusses ornamental, shade, and fruit trees as well. For each species, provides identifying characteristics, range, and distinctive features. Includes hundreds of photos and drawings and a list of Oregon's champion trees. Indexed by common and scientific tree name. This 60th anniversary edition includes over 70 new color photos!

April 19, 2012

Click on a species to see pictures and more details

Birds
 

Aquatic/Fish


Pollinators

 

December 1, 2003

Objective: To identify cover crops that can be grown in rotation with corn to suppress corn root rot and improve corn yield.

January 1, 2003

1. Irrigation level effects on sweet corn growth, yield, and root rot

2. Wild Proso Millet (WPM) control

3. Survival and emergency of WPM

January 1, 2005

Giannico, G.R., J.L. Li, K.L. Boyer, R.W. Colvin, W.J. Gerth, M.E. Mellbye, S.M. Griffith and J.J. Steiner. 2005. Fish and Amphibian Use of Intermittent Agricultural Waterways in the South Willamette Valley. Oregon Seed Extension Research Program Seed Production Research Report. 

January 1, 2009

Mader, Eric, Matthew Shepherd, Mace Vaughan, and Jessica Guisse. 2009. Tunnel Nests for Native Bees: Nest Contrsuction and Management. The Xerces Society. Portland, Oregon.

January 1, 2012

Shepherd, Matthew. 2012. Pacific Northwest Plants for Native Bees. The Xerces Society. Portland, Oregon.

January 1, 2010

The Xerces Society. 2010. Pollinator Conservation: Three Simple Steps to Help Bees and Butterflies. The Xerces Society. Portland, Oregon.

December 16, 1996

Project Leader:

Dan McGrath, OSU Extension

Cooperators:

Dr. Marcos Kogan, OSU Integrated Plant Protection Center

Dr. Glenn Fisher, OSU Dept. of Entomology

Duane Smith, AGRIPAC - Eugene, Oregon

Jim Gill, NORPAC - Stayton, Oregon

December 1, 1987

OBJECTIVES:

  • Refine corn earworm monitoring techniques using pheromone and black light traps.
  • Continue developing a statewide pheromone trapping program.
  • Study earworm flight and infestation trends that can be used to predict damaging infestations.
  • Develop corn earworm and sweet corn development models.
  • Conduct insecticide trials to determine if and when sprays are most effectively used.
  • Incorporate relevant information into a damage prediction model that can be used for management purposes.
January 1, 2012

 The Xerces Society. 2012. Managing Habitat for Pollinators. The Xerces Society. Portland, Oregon.

January 1, 2012

The Xerces Society. 2012. Know the Habitat on Your Farm. The Xerces Society. Portland, Oregon.

January 1, 2009

Giannico, Guillermo. 2009. Seasonal Watercourses in Agricultural Lands of the Upper Willamette Valley. Department of Fisheries & Wildlife. Oregon State University. Corvallis, Oregon.

 

January 1, 2007

Sarver, M. J. ed. 2007. Farm Management for Native Bees: A Guide for Delaware. NRCS and Delaware Department of Agriculture. Dover, Deleware. 

December 1, 1986

Objectives:

  • Test Plant Introduction lines and other germplasm sources for high field resistance to head smut.
  • Determine if immunity or true seedling resistance exists in germplasm sources.
  • Test commercial F1 hybrids and inbreds for head smut resistance.
December 1, 1986

OBJECTIVES:

  • Monitor corn earworm moths using pheromone and black light traps.
  • Conduct a statewide pheromone trapping program.
  • Conduct a comparison of pheromone traps.
  • Study earworm infestation trends
  • Study corn earworm overwintering success and spring emergence.
  • Produce a sweet corn growth model.
  • Conduct an insecticide trial.
December 1, 1986

Objectives: To evaluate yield, uniformity, plant characteristics, and ear characteristics in the field, and processed quality of new varietal introductions of supersweet (sh2) corn.

December 1, 1986

OBJECTIVES:

  • To evaluate the effect of plant spacing on yield and disease incidence in broccoli
  • To evaluate the effect of nitrogen rate on yield and disease incidence in broccoli
December 1, 1986

Objectives:

  • To test interspecific hybrids previously obtained for disease resistance.
  • To design methods to redifferentiate plants from bean tissue culture by examining the effects of novel hormone metabolites recently isolated from bean embryos.
December 1, 1986

Objectives:

  • To determine the effects of differential quantities of irrigation water on growth and yield of table beets.
  • To determine the relationship of nitrogen fertilizer rates to yield and size distribution of table beet roots.
  • To determine N concentrations in table beet leaves as affected by irrigation and N fertilizer rates.
December 1, 1987

Objectives: Breed bush green beans for the western Oregon processing industry with:

  • Improved yield potential and dependability
  • Improved straightness, texture, and other quality factors
  • Develop easy picking and small pod strains of Blue Lake type
  • Resistance to white mold and root rot
December 1, 1986

Objectives:

  • To evaluate the effects of 5 nitrogen rates and 2 within-row spacings on yield and root characteristics of Royal Chantenay carrots at North Willamette Experiment Station and Oregon State University Vegetable Research Farm.
  • To evaluate the effects of supplemental nitrogen rates, in addition to grower's base rates of N on yield at 5 grower locations (Red Cored Chantenay).
  • To determine N concentrations in carrot leaf sample from each of the experimental locations.
December 1, 1986

Objectives:

  • To determine the effects of planting dates and plant populations on yield and ear characteristics (especially length and tip-fill) of Jubilee sweet corn at the OSU Vegetable Research Farm.
  • To determine the relationship between plant populations and yield and ear characteristics in commercial plantings of sweet corn in grower fields.
December 1, 1987

Project Leaders: J. R. Baggett, Horticulture
G. W. Varseveld, Food Science and Technology

December 1, 1986

C.C. Shock, D. Burnett, C. Burnett, and J. Zalewski
Malheur Experiment Station, 0.S.U., Ontario, Oregon

December 1, 1986

Objectives: Breed bush green beans for the western Oregon processing industry with:

  • Improved yield potential and dependability
  • Improved straightness, texture, and other quality factors
  • Develop easy picking and small pod strains of Blue Lake type
  • Resistance to white mold and root rot
December 1, 1987

Objectives:

  • Evaluate variation in cultural practices that would allow earlier establishment and earlier harvest of Golden Jubilee sweet corn.
  • Determine how to dependably establish uniform stands of supersweet corn.
December 1, 1987

OBJECTIVES:

  • To evaluate the effect of plant spacing on yield and disease incidence in broccoli
  • To evaluate the effect of frequency and amount of irrigation water on yield and disease incidence in three broccoli cultivars
  • To evaluate the efficacy of Kocide 101 on control of head rot of broccoli under different irrigation regimes
December 1, 1987

Objectives:

  • To evaluate effects of supplemental nitrogen rates, in addition to growers base rates, on yield and root characteristics.
  • To evaluate effects of four or five tillage treatments that result in various degrees of soil compaction on carrot root growth and yield of two varieties (O.S.U. Vegetable Research Farm).
December 1, 1987

Objectives:

The project evaluates new supersweet and sugary-enhanced sweet corn varieties to identify superior plant materials. Varieties are evaluated for

  • Reliability in plant stand establishment.
  • Uniformity of maturity date.
  • Resistance to lodging.
  • Acceptability for yield and ear conformation.
  • Processing quality.

Determine the length of harvest period possible with a limited number of varieties.