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Soil Fertility in Organic Systems: A Guide for Gardeners and Small Acreage Farmers

This publication discusses the many types of fertilizers and soil amendments available for organic plant production. Fertilizer formulations, nutrient availability, and application practices for common organic products are also explained. ...

Jul 2013 | OSU Extension Catalog

Add organic matter to improve garden soils

Adding organic matter is the best way to improve nearly all kinds of soils.

Feb 27, 2009 | News Story

Hops Fertilizer Guide

Based on soil and tissue test results, recommends amounts of fertilizer and lime needed for hops.

Jul 1994 | OSU Extension Catalog

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 whether manure is ...

Dan Sullivan | Jun 2016 | OSU Extension Catalog

Composting: An Alternative for Livestock Manure Management and Disposal of Dead Animals

This publication compares composted and uncomposted manure; explains the composting process; describes equipment and strategies for composting; and lists uses, advantages, and drawbacks of compost. Discusses regulations, and briefly mentions methods for composting animal carcasses.

May 2012 | OSU Extension Catalog

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 Sullivan | Mar 2015 | Article

Predicting Nitrogen Availability from Organic Amendments: laboratory, Field, and Computer Stimulation

A study to improve the ability to predict nitrogen availability from organic soil amendments, including improved accuracy of Nitrogen availability estimates, to target amendment application rates to meet crop N needs.

Dan Sullivan, E.S. Gale, Delbert Hemphill, Craig Crogger, Andy Bary, E.A. Myhre | Apr 2018 | Publication

Monitoring Vineyard Nutrition

This article describes how to determine vineyard nutrient needs through tissue and soil sampling.

Patricia Skinkis, Paul Schreiner | Dec 2018 | Article

How to establish a wine grape vineyard

While the type of soil is important, location takes precedence when starting a vineyard for wine production.

Patricia Skinkis | Sep 2018 | Article