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Pressure-treated wood for raised bed construction in Oregon

Learn more about a study at Oregon State University to answer two common questions: 1) Do raised beds constructed from pressure treated wood leach copper into the soil, and 2) if leaching does happen, do the vegetables and herbs grown in the raised bed absorb the copper?

Brooke Edmunds, Gerald Presley, Matt Konkler | Apr 2026 | OSU Extension Catalog

Oregon State University Extension Service

EM 9877  |  April 2026
View online: https://extension.oregonstate.edu/catalog/pub/em9877

Spring flax in the Columbia Basin

Ryan Graebner, Daisy Rudometkin Odell, Matthew Hunt, Gena Mahato, Curtis Adams, Mukhlesur M. Rahman and Christina Hagerty
a large field of pale blue flowers above feathery green foliage
EM 9877
Yes, you can grow flax in Oregon. After testing varieties, researchers run through the results.
Three years of data from variety trials demonstrate the feasibility of growing flax in Eastern Oregon. Yields fluctuated with spring precipitation, and some varieties outperformed others in yield and oil content.

Flax is an annual crop that can be grown for grain or fiber production. Flax grain can be eaten directly in a range of food products, used as animal feed or pressed to make flax oil (commonly referred to as linseed oil when used for industrial purposes).

Yes, you can grow flax in Eastern Oregon. OSU researchers tested varieties — here's how they stacked up.
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© 2026 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

How speed and timing affect electrical weed control in organic blueberry fields

Weeds are a persistent challenge in organic blueberry production. Electrical weed control delivers high-voltage electricity through the weed’s tissue without the use of chemicals.

Marcelo Moretti, Luisa Carolina Baccin | Apr 2026 | OSU Extension Catalog

Oregon State University Extension Service

EM 9873  |  April 2026
View online: https://extension.oregonstate.edu/catalog/pub/em9873

Developing an irrigation water management plan

María Isabel Zamora Re, Todd M. Peplin, Matthew Alongi and Abigail Tomasek
woman crouching in corn field checking soil water conditions beneath pivot irrigation system
EM 9873
Where should you apply irrigation, how much should you apply and when? OSU's handy blueprint will walk you through the steps.
An irrigation water management plan helps producers apply the right amount of water at the right time and in the right place. When implemented effectively, irrigation planning can improve crop productivity, reduce water waste, protect water quality and lower energy costs. This resource guide provides a blueprint for developing an irrigation water management plan tailored to your farm or ranch.
An irrigation water management plan helps producers apply the right amount of water at the right time and in the right place. This blueprint will help you develop an irrigation water management plan tailored to your farm or ranch.
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© 2026 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Oregon State University Extension Service

EM 9869  |  April 2026
View online: https://extension.oregonstate.edu/catalog/pub/em9869

Inspecting and maintaining irrigation systems

María Isabel Zamora Re and Todd M. Peplin
Closeup for someone repair an irrigation pipe in the ground.
EM 9869
Learn how to inspect and maintain the efficiency of your irrigation systems to prevent costly repairs.
Annual inspection and maintenance are essential for maintaining the efficiency of irrigation systems, preventing costly repairs and ensuring that water is applied uniformly across fields. Regular inspections allow producers to identify mechanical, hydraulic and electrical issues before they become major failures.
Regular inspection of irrigation equipment allows producers to identify mechanical, hydraulic and electrical issues before they fail. Learn how to maintain the efficiency of your irrigation systems and prevent costly repairs.
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© 2026 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Oregon State University Extension Service

EM 9522  |  April 2026
View online: https://extension.oregonstate.edu/catalog/pub/em9522

Irrigation and water quality

Abigail Tomasek, María Isabel Zamora Re and Todd M. Peplin
Drawing shows components of a watershed.
EM 9522
Monitoring the quality of irrigation water is vital for the health of the environment and the ability of the soil to produce crops.
Monitoring the quality of irrigation water is vital for the health of the environment and the ability of the soil to produce abundant crops. Improper irrigation water management can lead to runoff and leaching of contaminants that harm ground and surface water. Preventing irrigation-related water quality issues also helps growers comply with state and federal laws.
Monitoring the quality of irrigation water is vital for the health of the environment and the ability of the soil to produce abundant crops. It also helps growers comply with state and federal laws.
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© 2026 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Oregon State University Extension Service

EM 9867  |  April 2026
View online: https://extension.oregonstate.edu/catalog/pub/em9713

Irrigation technologies

María Isabel Zamora Re and Todd M. Peplin
man checking panel adjacent to water pipe in cornfield
EM 9867
New irrigation technology is giving farmers new ways to conserve water while sustaining crop quality and productivity.
In an era of prolonged droughts and water shortages, new irrigation technology is giving farmers ways to conserve water while sustaining crop quality and productivity. Learn about
irrigation scheduling programs and automated tools that help manage the timing, application, and distribution of irrigation water.
In an era of water shortages, new irrigation technology is giving farmers new ways to conserve water while sustaining productivity. Learn about
scheduling programs and tools that manage the timing and distribution of water.
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© 2026 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Oregon State University Extension Service

EM 9717  |  April 2026
View online: https://extension.oregonstate.edu/catalog/pub/em9717

Irrigation water scheduling

María Isabel Zamora Re, Todd M. Peplin and Abigail Tomasek
Rows of crops being watered by an irrigation system on wheels.
EM 9717
With basic field information and a few calculations, irrigators can significantly improve their water-use efficiency and crop performance.
Applying too much or too little water is one of the most common irrigation management challenges. Irrigation scheduling is the process of determining when to irrigate and how much water to apply based on crop demand and soil water availability. With basic field information and a few calculations, irrigators can significantly improve their water-use efficiency, crop performance and energy management within their operations.
Applying too much or too little water is one of the most common irrigation challenges. But with basic field information and a few calculations, irrigators can greatly improve water-use efficiency.
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© 2026 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Oregon State University Extension Service

EM 9612  |  April 2026
View online: https://extension.oregonstate.edu/catalog/pub/em9612

Irrigation water: How it's delivered, how it's measured

María Isabel Zamora Re and Todd M. Peplin
water flows through weir adjacent to lush green cropland
EM 9612
To ensure your crop gets enough irrigation water, you need to understand how water is delivered to plants and how to measure it.
Irrigation water management begins with understanding how much water is available for irrigation. Knowing how your water is delivered and how to measure the volume and flow of water to your irrigation system ensures that the proper amount of water reaches the plants. Discover the various methods for delivering irrigation water to your property and learn techniques for measuring water to achieve optimal crop growth.
To ensure your crop gets enough irrigation water, you need to understand how water is delivered to plants and how to measure it. Discover methods that can help you achieve optimal plant growth.
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© 2026 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Oregon State University Extension Service

EM 9713  |  April 2026
View online: https://extension.oregonstate.edu/catalog/em-9713-saving-water-saving-energy

Saving water and saving energy

María Isabel Zamora Re and Todd M. Peplin
motor in field being irrigated
EM 9713
If you want to save money on irrigation, start by increasing pumping efficiency. Learn 3 strategies to help.
Pumping is often the largest component of energy use in irrigation. Improving irrigation efficiency saves money and energy. Learn three strategies to improve efficiency in your operation: inspecting pumps, upgrading components and improving water management practices.
Improving irrigation efficiency saves money and energy. Learn three strategies to improve efficiency in your operation.
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© 2026 Oregon State University. Extension work is a cooperative program of Oregon State University, the U.S. Department of Agriculture, and Oregon counties. Oregon State University Extension Service offers educational programs, activities, and materials without discrimination on the basis of race, color, national origin, religion, sex, gender identity (including gender expression), sexual orientation, disability, age, marital status, familial/parental status, income derived from a public assistance program, political beliefs, genetic information, veteran’s status, reprisal or retaliation for prior civil rights activity. (Not all prohibited bases apply to all programs.)

Accessibility: This publication will be made available in an accessible alternative format upon request. Please contact [email protected] or 541-737-3311.

Source URL: https://extension.oregonstate.edu/catalog/new-releases