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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)

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

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)

Using soil type to estimate potential forage productivity

Information about a pasture's soil can help maximize its production. Here's a step-by-step guide to using the NRCS Web Soil Survey website to gather soil information for specific pastures.

Shelby Filley | Aug 2018 | Article

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)

Soil Acidity in Oregon: Understanding and Using Concepts for Crop Production

Soil acidity, expressed by low soil pH, causes reduced crop growth and significant economic loss. It is the most commonly overlooked and poorly understood yield-limiting factor in western Oregon and a developing ...

John M. Hart, Dan M. Sullivan, Nicole Anderson, Andy Hulting, Donald A. Horneck, Neil W. Christensen | Jul 2013 | Extension Catalog publication Peer reviewed (Orange level)

Nutrient and Soil Health Management for Sweet Corn (Western Oregon)

This guide integrates recommendations for nutrient management with cover cropping practices that promote soil health. Recommendations for nutrient rate, source, timing and placement for nitrogen, phosphorus, potassium, ...

Dan M. Sullivan, Ed Peachey, Aaron Heinrich, Linda Brewer | Jan 2020 | Extension Catalog publication Peer reviewed (Orange level)

Should I worry about heavy metals in my garden soil?

What do we know about heavy metals in soil? What do we know about lead exposure through soil and garden plants? What do we know about cadmium and arsenic in soils? What can I do if I’m at risk for heavy metals in my garden soil?

Jul 2016 | Article

Applying Lime to Raise Soil pH for Crop Production (Western Oregon)

This publication describes how to estimate lime application rate and lists criteria for choosing liming materials (source), lime application method (placement), and how often to apply lime (frequency).

Nicole Anderson, John M. Hart, Dan M. Sullivan, Neil W. Christensen, Donald A. Horneck, Gene Pirelli | May 2013 | Extension Catalog publication Peer reviewed (Orange level)

Evaluating Soil Nutrients and pH by Depth in Situations of Limited or No Tillage in Western Oregon

Many nutrients and lime are not mobile in the soil. When applied to the soil surface without tillage, these materials remain in the top 2 inches, especially in production systems that lack tillage. If a soil ...

Nicole Anderson, John M. Hart, Donald A. Horneck, Dan M. Sullivan, Neil W. Christensen, Gene Pirelli | Oct 2010 | Extension Catalog publication Peer reviewed (Orange level)