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Make Polyacrylamide Work for You

PAM is a synthetic water-soluble polymer composed of molecules of acrylamide. PAM binds soil particles together, causing them to settle out and not be carried away in runoff water. This prevents soil loss and ...

Chelsey L. Iida, Clinton Shock | May 2008 | Extension Catalog publication Peer reviewed (Orange level)

Estimating Plant-Available Nitrogen Release from Cover Crops

This publication assists western Oregon farmers and agricultural professionals in determining the nitrogen fertilizer replacement value of winter cover crops. Includes information on plant-available nitrogen (PAN) basics; a ...

Dan M. Sullivan, Nick Andrews, Linda Brewer | Aug 2020 | Extension Catalog publication Peer reviewed (Orange level)

Compost for blueberry plants: Testing and tips

Compost is an acceptable amendment for blueberry plants, but it's important to test it before you apply it. Pay attention to pH and nutrient levels, and watch out for weeds.

Dan M. Sullivan | Mar 2015 | Article Peer reviewed (Gray level)

Sampling Dairy Manure and Compost for Nutrient Analysis

This guide describes how to obtain a representative sample of stockpiled dairy manure or dairy compost, select a reliable manure or compost testing laboratory, determine which lab analyses are needed (including total...

Amber Moore, Mario de Haro-Marti, Lide Chen | Jul 2015 | Extension Catalog publication Peer reviewed (Orange level)

Performance of Hard Red Winter Wheat in Late-Planted Fallow

This publication describes results of field research on the performance of hard red winter wheat cultivars in a late-planted fallow system in the low-precipitation zone of Oregon and Washington.

Larry Lutcher, Clare Sullivan, Michael D. Flowers, Christopher C. Mundt, Don Wysocki, Karl E. L. Rhinhart, Juliet Marshall | Jun 2020 | Extension Catalog publication Peer reviewed (Orange level)

Myth vs. reality: What’s the truth behind some common gardening practices?

Experts from Oregon State University Extension Service stepped up to bust some common gardening myths.

Kym Pokorny | Jul 14, 2023 | News story

What do the long-term experiments in the dryland Pacific Northwest tell us?

A review and explanation of the long-term experiments at the Columbia Basin Agricultural Research Center (CBARC) over many years. The goals are how to work and protect the dryland soil over time so that healthy...

Santosh Shiwakoti, Valtcho Jeliazkov | Aug 2020 | Extension Catalog publication Peer reviewed (Orange level)

Biosolids in Dryland Cropping Systems

This publication reviews the long-term benefits of municipal biosolids applications on soil health in dryland cereal and pasture cropping systems east of the Cascades. Biosolids were an especially effective source of ...

Dan M. Sullivan, Andy I. Bary, Craig G. Cogger, Isaac Madsen, Linda Brewer | Mar 2023 | Extension Catalog publication Peer reviewed (Orange level)

How to reap the benefits of winter cover crops

Planting cover crops on commercial farms is a good idea that is often difficult to execute. But with the right crops and proper timing, it can be done. The effort will be rewarded with improved soil for future crops.

Nick Andrews | Jan 2011 | Article

Cover crop performance in central Oregon

Cover crops can provide many benefits: weed suppression, erosion prevention, increased water infiltration and water-holding capacity, improved nutrient cycling and pollinator habitat. Each species provides different benefits and requires ...

Clare Sullivan | Dec 2018 | Article