Mary Corp

Former

Biography

Mary is an Emeritus Professor with Oregon State University Department of Crop and Soil Science and has been with OSU since 1998. Mary is involved in Dryland Cropping Systems research and is Director of the Columbia Basin Agricultural Research Center near Pendleton, Oregon. Her work focuses on soil conservation, cereal variety selection, insect pests and weeds in small grains.

Content by Mary Corp

Winter Wheat in Continuous Cropping Systems (Intermediate Precipitation Zone) Fertilizer Guide

Addresses nutritional requirements of nonirrigated cereal crops in north-central and eastern Oregon. Includes recommendations for nitrogen, phosphorus, potassium, sulfur, chloride, and zinc.

Don Wysocki, Donald A. Horneck, Larry Lutcher, John M. Hart, Steven Petrie, Mary Corp | Mar 2023 | Extension Catalog publication Peer reviewed (Orange level)

Winter Wheat in Continuous Cropping Systems (High Precipitation Zone) Fertilizer Guide

Addresses nutritional requirements of nonirrigated cereal crops in north-central and eastern Oregon. Includes recommendations for nitrogen, phosphorus, potassium, sulfur, chloride, and zinc.

Steven Petrie, Don Wysocki, Donald A. Horneck, Larry Lutcher, John M. Hart, Mary Corp | Mar 2023 | Extension Catalog publication Peer reviewed (Orange level)

Dryland Cropping Systems: Chickpea Production Guide

This publication discusses chickpea (garbanzo) cultivation in Oregon. Topics include variety selection, conditions for growth, seed and seedbed preparation, seeding date, method and rate of seeding, fertilizer and lime, ...

Mary Corp, Stephen Machado, Daniel A. Ball, Richard Smiley, Steven Petrie, Mark Siemens, Stephen Guy | Jul 2021 | Extension Catalog publication Peer reviewed (Orange level)

Columbia Basin Agricultural Research Center

Dryland agriculture, growing crops without irrigation, is the focus of research at Oregon State University's Columbia Basin Agricultural Research Center (CBARC), where as little as 12 inches of precipitation falls each year. It’s ...

Mary Corp | Apr 2019 | Video

Collecting and Preserving Insects

Collecting insects can be a fun hobby, and is also an important step in IPM. The resources in this collection will help you learn how to find and collect insects and arthropods, then prepare them so that they can be useful for identification and research efforts.

Silvia I. Rondon, Mary Corp | Dec 2018 | Collection Peer reviewed (Gray level)

Spikeweed

Can spraying this weed at the right time keep it out of our fields?

Mary Corp | Oct 2018 | Article

Take all

This root rot look-alike is endangering wheat, grass, and barley. Learn the signs, symptoms, and controls of this disease.

Mary Corp | Oct 2018 | Article

Velvetleaf-Have you seen this weed?

This small plant causes extensive crop loss. Is it still missing?

Mary Corp | Oct 2018 | Article

Meadow Knapweed

Tall, aggressive perennial destroying native plants.

Mary Corp | Oct 2018 | Article

Common Crupina

Small flowering plant that poses a threat to rangeland.

Mary Corp | Oct 2018 | Article

Pythium

This pest stunts the growth and maturation or cereal grains.

Mary Corp | Oct 2018 | Article

Blooming Biennials! Musk Thistle

Tall, diverse plant sneaks into pasture, rangeland, and timberland.

Mary Corp | Oct 2018 | Article

Dalmatian Toadflax

Deep-rooted, flowering perennial threatening crop production and rangeland.

Mary Corp | Oct 2018 | Article

Powdery Mildew

Pest spots wheat. What does this fungus want with our crops?

Mary Corp | Oct 2018 | Article

Fusarium

Fungus that attacks small grain crops effects crop yield.

Mary Corp | Oct 2018 | Article

Prickly Lettuce

This persistent, prickly pest plans to invade fields and stay there.

Mary Corp | Oct 2018 | Article

Barley Yellow Dwarf Virus

Virus mainly spread by aphids attacks wheat, barley and oats causing crop damage and yield loss. What is this disease?

Mary Corp | Oct 2018 | Article

Puncture Vine

Prickly, resilient vine comes back for more. This little bug has something to say about that.

Mary Corp | Oct 2018 | Article

Leafy Spurge

Hearty perennial reduces rangeland to a monoculture.

Mary Corp | Oct 2018 | Article

Cephalosporium Stripe

Winter cereals and grasses in danger of contracting disease.

Mary Corp | Oct 2018 | Article

Purple Loosestrife

Tall, spiky weed crows out essential vegetation.

Mary Corp | Oct 2018 | Article

Preventing Herbicide Drift and Injury to Grapes

This revision updates information on susceptibility of grapevines to several common herbicides used in agricultural production. Color photos illustrate injury symptoms. The publication provides practical measures that ...

Daniel A. Ball, Mary Corp, Imed Dami | Feb 2018 | Extension Catalog publication Peer reviewed (Orange level)

Preserving insects and related arthropods

Learn to select the proper methods of preservation for your insect collection. Methods and materials depend on the type of insect and the purpose and size of the collection.

Mary Corp, Silvia I. Rondon | Jun 2016 | Article

Integrated Pest Management: How to Identify a Plant or Weed

This video demonstrates the best ways to identify a plant or weed. It covers the process of photographing and collecting the plant and then how to narrow down and establish the plant's category. It explains how to use a field guide and a dichotomous key to identify a plant.

Silvia I. Rondon, Mary Corp, Stephen M. Van Vleet, Stuart Reitz, Pamela Hutchinson | Jul 2015 | Extension Catalog publication Peer reviewed (Orange level)

Integrated Pest Management: Using A Plant Press

Preserving plant specimens is the best way to identify plants by their characteristics at a later period of time. It is always best (if possible) to collect the entire plant specimen at peak production, so you...

Silvia I. Rondon, Mary Corp, Stephen M. Van Vleet, Stuart Reitz, Pamela Hutchinson | Jul 2015 | Extension Catalog publication Peer reviewed (Orange level)

Integrated Pest Management: Pest Management Integration

This video explores Integrated Pest Management (IPM) as an approach to protecting your crop from insects, weeds and plant pathogens. IPM uses multiple tactics to manage a particular pest and takes into consideration how management of one pest may affect management of other pests.

Silvia I. Rondon, Mary Corp, Stephen M. Van Vleet, Stuart Reitz, Pamela Hutchinson | Jul 2015 | Extension Catalog publication Peer reviewed (Orange level)

Integrated Pest Management: Monitoring Diseases In The Field

This video explains how to do field scouting for diseases and vectors by walking through a field and observing a number of locations. Diseases can reduce the yield and nutritional quality of crops., and vectors...

Silvia I. Rondon, Mary Corp, Stephen M. Van Vleet, Stuart Reitz, Pamela Hutchinson | Jul 2015 | Extension Catalog publication Peer reviewed (Orange level)

Integrated Pest Management: Detecting Plant Diseases in the Lab

This video describes how the Hermiston Agricultural Research and Extension Center examines plant disease samples to determine pathogens and plant diseases. Once the problem is identified, the lab recommends treatment and control methods.

Silvia I. Rondon, Mary Corp, Stephen M. Van Vleet, Stuart Reitz, Pamela Hutchinson | Jul 2015 | Extension Catalog publication Peer reviewed (Orange level)

When are pears ready to be picked?

Q: How do you tell when pears are ready to pick? I know you pick them before they are yellow and soft, but I'd like to know more.

A: View answer | View all featured questions

Rattail Fescue control in chemical fallow

European native grassy weed on the rise.

Mary Corp, Daniel Ball | Oct 2011 | Article

Russian Wheat Aphid

What your rolled-up wheat leaves mean.

Mary Corp | Oct 2011 | Article

Sweep Net Technique

Demonstration of how to use a sweep net to collect insects.

Silvia I. Rondon, Mary Corp | Jul 2011 | Video

Insect Labeling

Oregon State University Extension's Mary Corp explains the importance of labeling insects in a collection and how to do it.

Mary Corp | Jul 2011 | Video

Wheat Head Armyworm True or False: A Tale from the Pacific Northwest

Armyworm caterpillars can be a troublesome pest in cereal grains grown in the Pacific Northwest states. This publication presents information about the pest and its control.

Silvia I. Rondon, Mary Corp, Diana Roberts, Keith S. Pike, Peter J. Landolt, Dustin Keys | May 2011 | Extension Catalog publication Peer reviewed (Orange level)

Irrigated Soft White Wheat (Eastern Oregon) Nutrient Management Guide

Management recommendations focusing on rate, timing, source, and method of nutrient application for irrigated wheat production in eastern Oregon.

Donald A. Horneck, John M. Hart, Michael D. Flowers, Larry Lutcher, Don Wysocki, Mary Corp, Mylen Bohle | Dec 2010 | Extension Catalog publication Peer reviewed (Orange level)

Invasive Plants of Eastern Oregon and Alternative Natives and Ornamentals

When deciding upon which plants will be used in your garden or landscaping project it’s important to avoid selecting species that are considered invasive. This publication provides several examples of invasive plants for our area, specifically for zones 5 and 6 of the United States Department of Agriculture’s “hardiness zones” chart.

Mary Corp, Chris Luttrell | Aug 2010 | Publication

Lawn watering guide for Eastern Oregon

During the summer, nearly half of all residential water in Oregon is used to irrigate landscape areas around homes. A significant reduction in water use can occur by using efficient water ways to maintain our lawns and ...

Mary Corp, Chris Luttrell | Aug 2010 | Article

Phylum Arthropod

Member of the Phyllum Arthropoda can be found in the seas, in fresh water, on land, or even flying freely; a group with amazing differences of structure, and so abundant that all the other animals taken together are less than 1/6 as many as the arthropods. Well-known members of this group are the lobsters, crayfish and crabs; scorpions, spiders, mites, ticks, the centipedes and millipedes; and last, but not least, the most abundant of all, the insects. The Phylum Arthropods consist of the following classes: arachnids, chilopods, diplopods, crustaceans and hexapods (insects).

Silvia I. Rondon, Mary Corp | Mar 2010 | Educational document

External Morphology

Information on external morphology of insects.

Silvia I. Rondon, Mary Corp | Mar 2010 | Educational document

Basic Insect Classification

Basic Insect Classification Chart

Silvia I. Rondon, Mary Corp | Feb 2010 | Educational document

Pinning and Labeling Insects

Details on the correct way to pin various orders of insects.

Silvia I. Rondon, Mary Corp | Feb 2010 | Fact Sheet Peer reviewed (Gray level)

Storing and Displaying Insects

Details of essential materials needed for storing and displaying insects.

Silvia I. Rondon, Mary Corp | Jan 2010 | Educational document

Preserving Insects and Related Arthropods

This fact sheet highlights the various methods and materials used to preserve insect and arthropod specimens. Proper methods of preservation include liquid agents, dry gaseous agent, and dry storage. Part of the WSARE 'Train the trainer' resources

Silvia I. Rondon, Mary Corp | Jan 2010 | Fact Sheet Peer reviewed (Gray level)

Collecting Insects and Related Arthropods

Detailed instructions on collecting insects for a specimen collection.

Silvia I. Rondon, Mary Corp | Jan 2010 | Educational document

Agronomic Guidelines for Flexible Cropping Systems in Dryland Areas of Oregon

Plant-available soil water is the most reliable indicator of potential yield and is the basis of guidelines found in this publication.

Larry Lutcher, Don Wysocki, Mary Corp, Donald A. Horneck | Nov 2009 | Extension Catalog publication Peer reviewed (Orange level)

Scouting and collecting Wheat Head Armyworms

What growers can do to scout for and help identify wheathead armyworms.

Mary Corp | Oct 2008 | Article

Irrigated and Dryland Canola Nutrient Management Guide

Provides nutrient application recommendations for nitrogen, sulfur, phosphorus, potassium, zinc, boron, and pH adjustment. Includes example fertilizer application rate calculations.

Don Wysocki, Mary Corp, Donald A. Horneck, Larry Lutcher | Nov 2007 | Extension Catalog publication Peer reviewed (Orange level)

Managing Nitrogen for Yield and Protein in Hard Wheat

The successful production of hard wheat with acceptable protein is based, in part, on an effective nitrogen (N) management plan. This fact sheet discusses the principles of managing N for hard wheat production and...

Michael D. Flowers, Larry Lutcher, Mary Corp, Bradford D. Brown | Jan 2007 | Extension Catalog publication Peer reviewed (Orange level)

Monitoring Soil Nutrients in Dryland Systems Using Management Units

Focuses on how to design a soil nutrient monitoring strategy using management units or zones for soil testing and nutrient application. This approach is designed to provide better information to make nutrient ...

Mary Corp, Donald A. Horneck, Don Wysocki, Larry Lutcher | Nov 2006 | Extension Catalog publication Peer reviewed (Orange level)

Cereal Leaf Beetle

This slug-like larvae turns into a beetle that is putting crops in danger. Watch out of leaves with slit holes.

Mary Corp | Oct 2006 | Article

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