Dan M. Sullivan

Retired

Content by Dan M. Sullivan

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)

Postharvest Soil Nitrate Testing for Manured Grass and Silage Corn (West of the Cascades)

This publication describes the use of postharvest soil nitrate testing as a tool for assessment of nitrogen (N) management in manured cropping systems west of the Cascade Mountains in Oregon, Washington, and south coastal British Columbia.

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

Fertilizing with Manure and Other Organic Amendments

Are you thinking about using manure to fertilize your farm but want more information? Properly managed manure applications recycle nutrients to crops, improve soil quality, and protect water quality. From deciding ...

Andy I. Bary, Craig G. Cogger, Dan M. Sullivan | Mar 2023 | 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)

Silage Corn Nutrient Management Guide for Western Oregon

Silage corn is an excellent feed for dairy cattle because of its high dry-matter yield, energy content and palatability. This guide provides nutrient and lime recommendations for silage corn established after ...

Dan M. Sullivan, Troy Downing, Linda Brewer, John M. Hart | Mar 2023 | Extension Catalog publication Peer reviewed (Orange level)

Estimating Plant-Available Nitrogen from Manure

This publication discusses management practices that increase crop nitrogen utilization. It also includes an interactive worksheet for calculating available nutrients supplied by manure application. The worksheet can be ...

Dan M. Sullivan | Mar 2023 | Extension Catalog publication Peer reviewed (Orange level)

Vegetable Gardening in Oregon

Provides an introduction to vegetable gardening in Oregon. Discusses site selection and preparation, planting, and basic garden care. Includes production pointers and recommended varieties for many common garden vegetables. A sample garden layout is included.

James R. Baggett, Deborah Kean, Dan M. Sullivan, Alexandra Stone, James Myers | Mar 2023 | Extension Catalog publication Peer reviewed (Orange level)

Worksheet for Calculating Biosolids Application Rates in Agriculture

Biosolids are a byproduct of municipal wastewater treatment. Raw sewage solids must be processed to meet U.S. Environmental Protection Agency standards before they can be called biosolids. This worksheet provides ...

Dan M. Sullivan, Deirdre Griffin LaHue, Biswanath Dari, Andy I. Bary, Craig G. Cogger | Mar 2023 | Extension Catalog publication Peer reviewed (Orange level)

Fertilizing with Biosolids

Biosolids can be used to supply nutrients to crops. The nutrient content and fertilizer replacement value of biosolids and the relationship between biosolids nutrient inputs and crop removal of nutrients are ...

Dan M. Sullivan, Abigail Tomasek, Deirdre Griffin LaHue, Betsy Verhoeven, Amber Moore, Linda Brewer, Andy I. Bary, Craig G. Cogger, Biswanath Dari | Apr 2022 | Extension Catalog publication Peer reviewed (Orange level)

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)

Organic farmers save money on fertilizer with OSU Extension tool

The OSU Organic Fertilizer and Cover Crop Calculator helps farmers estimate nitrogen release from cover crops and the cost of managing cover crops.

Dan M. Sullivan, Nick Andrews | Mar 2022 | Impact story

Tasas de Aplicación de Estiércol para la Producción de Forraje en el Oeste de Oregón (Manure Application Rates for Forage Production)

Esta publicación proporciona estimaciones de la eliminación de nitrógeno, fósforo y potasio de cultivos forrajeros que se cultivan en lecherías en el oeste de Oregon. También proporciona orientación sobre las ...

Troy Downing, Dan M. Sullivan | Mar 2021 | Extension Catalog publication Peer reviewed (Orange level)

Manure Application Rates for Forage Production

This publication provides estimates of crop removal of nitrogen, phosphorus and potassium for forage crops grown on dairies in western Oregon. It also provides guidance on liquid manure application rates to meet crop nitrogen requirements.

Troy Downing, Dan M. Sullivan | Nov 2020 | 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)

Baseline Soil Nitrogen Mineralization: Measurement and Interpretation

Baseline N mineralization refers to plant-available nitrogen release that accompanies the decomposition of soil organic matter. The rate of baseline soil N mineralization is governed by the quantity and quality of ...

Dan M. Sullivan, Amber Moore, Betsy Verhoeven, Linda Brewer | Mar 2020 | 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)

Soil Organic Matter as a Soil Health Indicator: Sampling, Testing and Interpretation

Testing for soil organic matter helps you monitor soil health over time. Good soil management practices can improve soil organic matter in three to five years.

Dan M. Sullivan, Amber Moore, Linda Brewer | Aug 2019 | Extension Catalog publication Peer reviewed (Orange level)

Soil Test Interpretation Guide

This publication provides an overview of soil testing and general guidelines for interpreting soil test results for nitrogen, phosphorus, sulfur, potassium, calcium, magnesium, boron, zinc, copper, manganese, iron, ...

Donald A. Horneck, Dan M. Sullivan, Jim Owen, John M. Hart | Jul 2019 | Extension Catalog publication Peer reviewed (Orange level)

OSU Organic Fertilizer & Cover Crop Calculator: Predicting Plant-available Nitrogen

Describes the OSU Organic Fertilizer & Cover Crop Calculator and using it to predict plant-available nitrogen.

Dan M. Sullivan, Nick Andrews, Clare Sullivan, Linda Brewer | May 2019 | Extension Catalog publication Peer reviewed (Orange level)

Nutrient Management for Pastures: Western Oregon and Western Washington

Describes nutrient management practices for pastures to produce forage as a main feed source for western Oregon and Washington livestock.

Amber Moore, Gene Pirelli, Shelby Filley, Steve Fransen, Dan M. Sullivan, Melissa Fery, Tom Thomson | Jan 2019 | Extension Catalog publication Peer reviewed (Orange level)

Interpreting Compost Analyses

Compost can return nutrients and organic matter to the soil, a proven practice for soil health enhancement. It can improve crop growth and provide environmental benefits by improving soil tilth and the soil’s ...

Dan M. Sullivan, Andy I. Bary, Robert Miller, Linda Brewer | Oct 2018 | Extension Catalog publication Peer reviewed (Orange level)

Nutrient Management for Sustainable Vegetable Cropping Systems in Western Oregon

This publication reflects over 30 years of vegetable production research conducted in the Willamette Valley. It is divided into three main sections: sustainable soil health; soil testing and nutrient management; and ...

Dan M. Sullivan, Ed Peachey, Aaron Heinrich, Linda Brewer | May 2017 | Extension Catalog publication Peer reviewed (Orange level)

Backyard Composting

Gardeners have long made and used compost because of the way it improves garden soil. Today, home composting is a cornerstone of sustainable living. We transform yard debris and food scraps into a valuable soil amendment and close the recycling loop in our own backyard.

Dan M. Sullivan, Craig Crogger, Andy Bary | Apr 2017 | Online resource

Snap Bean—Western Oregon, Nutrient Management Guide

Provides nutrient management information and recommendations for bush snap beans grown in western Oregon for processing or fresh market. Includes descriptions of plant nutrient deficiency with color photos, and information on optimum application rates, timing, and placement.

Aaron Heinrich, Dan M. Sullivan, Ed Peachey | Nov 2016 | Extension Catalog publication Peer reviewed (Orange level)

Reducing Lead Hazard in Gardens and Play Areas

Learn to evaluate and manage lead hazard in your landscape or garden. Learn how soils get contaminated with lead, how to test soil for lead contamination and how to reduce exposure to soil lead.

Linda Brewer, Dan M. Sullivan, Pukhraj Deol, Sam Angima | Oct 2016 | Extension Catalog publication Peer reviewed (Orange level)

Integrated Clubroot Control Strategies of Brassicas: Nonchemical Control Strategies

Clubroot (causal organism, Plasmodiophora brassicae) is a major soilborne disease of brassica crops in the Willamette Valley. It’s incidence and severity is increasing due to a high demand for brassicas that has ...

Aaron Heinrich, Alexandra Stone, Dan M. Sullivan, James Myers, Ed Peachey | Aug 2016 | Extension Catalog publication Peer reviewed (Orange level)

Fertilizing Farmland with Yard Trimmings from Landscape Maintenance

Yard trimmings are a beneficial soil amendment that supply plant nutrients and organic matter. They have been successfully used in the production of a variety of annual and perennial crops in Washington State. From deciding whether to use yard trimmings on your farm to learning how to calibrate applications, this publication takes you through the process of fertilizing your farmland with yard trimmings.

Dan M. Sullivan, Craig Crogger, Andy Bary | Jun 2016 | Online resource

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)

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)

Agricultural Composting and Water Quality

This publication addresses factors that farmers must consider when planning an on-farm composting enterprise: the composting process and its impact on water quality, site selection, facility layout and design, composting...

Linda Brewer, Nick Andrews, Dan M. Sullivan, Will Gehr | Jun 2013 | Extension Catalog publication Peer reviewed (Orange level)

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)

Eastern Oregon Liming Guide

Liming is a new practice for the inland Pacific Northwest, necessitated by soil acidification caused by nitrogen fertilization. This publication provides guidance on how to evaluate cropping systems for lime need and how to determine lime application rate.

Dan M. Sullivan, Donald A. Horneck, Don Wysocki | 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)

Mulching Woody Ornamentals with Organic Materials

Discusses mulching woody ornamentals (trees and shrubs) with organic materials. Covers the reasons for mulching, how to apply mulch, and how to maintain its beneficial effects over time. General principles described ...

Neil Bell, Dan M. Sullivan, Tom Cook | Mar 2009 | Extension Catalog publication Peer reviewed (Orange level)

Managing Irrigation Water Quality for Crop Production in the Pacific Northwest

Focuses on analyses used for typical agricultural irrigation water sources. Discusses sampling procedures, analyses to perform, and hazards from salts, individual nutrients, pH, sodium, carbonates, and lime. Includes numerous examples and reference tables.

Bryan G. Hopkins, Donald A. Horneck, Robert G. Stevens, Jason W. Ellsworth, Dan M. Sullivan | Aug 2007 | Extension Catalog publication Peer reviewed (Orange level)

Improving Garden Soils with Organic Matter

Soil organic matter is important to good plant performance. Adding organic matter can improve any soil, no matter how compacted. Learn how to check your soil for organic matter and improve its quality with amendments.

Neil Bell, Dan M. Sullivan, Linda Brewer, John M. Hart | May 2003 | Extension Catalog publication Peer reviewed (Orange level)

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