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Measuring Soil PH

As the summer season winds down, it is time again to start planning for next year’s crop. One of the areas to do inventory is soil fertility. Soil pH is one factor that gauges your plant nutrition status. A single ...

Sam Angima | Jan 2011 | Article

Soil, Seedbed Preparation and Seeding for Hemp

Growers planting a successful commercial crop of hemp for seed, fiber, or resin will follow these guidelines for soil preparation, seeding, and irrigation.

Richard Roseberg, Valtcho Jeliazkov, Sam Angima | Aug 2019 | Extension Catalog publication Peer reviewed (Orange level)

Alfalfa soil fertility and fertilization requirements

A productive alfalfa crop removes significant quantities of macronutrients and small amounts of micronutrients from the soil. A complete fertilizer program is essential to ensure a highly productive, long-lived stand.

David Hannaway, Mylen Bohle, Daniel Miles, Yitian Lin, Brianna Randow | Sep 2019 | Article

Managing Salt-affected Soils for Crop Production

Salt accumulation in soil can reduce crop yields and affect soil structure. Learn how to evaluate the salts present in soils and to select appropriate management practices to maintain soil health and crop productivity.

María Isabel Zamora Re, Abigail Tomasek, Bryan G. Hopkins, Dan M. Sullivan, Linda Brewer | Apr 2022 | Extension Catalog publication Peer reviewed (Orange level)

Soil pH and pasture productivity on the Oregon Coast

Producers have questioned the conventional advice to apply lime to change the pH of coastal soils. We look at one set of data on ryegrass pastures that shows the return on investment may indeed be modest.

Troy Downing | May 2009 | Article

Guide to Oregon County Soil Survey Reports

An inventory of all the different kinds of soils in many Oregon counties is available. These inventories were made starting in the 1970’s by soil scientists of the U.S. Department of Agriculture Soil Conservation Service in ...

Brad Withrow-Robinson, Debra Zaveson | Dec 2007 | Article

Acidifying Soil for Crop Production: Inland Pacific Northwest

Explains the relationship between high soil pH and nutrient deficiencies in crop plants. Color photos illustrate symptoms of pH-induced nutrient deficiency. Explains the causes of high soil pH and presents step-by-step instructions for lowering pH.

Donald A. Horneck, Don Wysocki, Bryan G. Hopkins, John M. Hart, Robert G. Stevens | Sep 2007 | Extension Catalog publication Peer reviewed (Orange level)

Soil Nitrate Testing for Willamette Valley Vegetable Production

A soil nitrate test measures the concentration of nitrate in the soil at a specific moment in time, including nitrate originating from organic inputs, fertilizer, and soil organic matter. This publication describes ...

Dan M. Sullivan, Nick Andrews, Aaron Heinrich, Ed Peachey, Linda Brewer | Aug 2023 | Extension Catalog publication Peer reviewed (Orange level)

Monitoring Soil Nutrients Using a Management Unit Approach

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 Halbleib, Jason W. Ellsworth, Dan M. Sullivan, Donald A. Horneck, Bradford D. Brown, Robert G. Stevens | Oct 2003 | Extension Catalog publication Peer reviewed (Orange level)

Soil Fertility Management for Organic Crops

Growers need sound information to guide their management decisions on organic vegetable production practices. Each publication in this series addresses a key aspect of organic production practices applicable to all vegetable crops.

Mark Gaskell, Richard Smith, Jeff Mitchell, Steven T. Koike, Calvin Fouche, Tim Hartz, William Horwath, Louise Jackson | Apr 2006 | Online resource