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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)

Some garden myths and what science has to say

From the myth of collapsing root balls to the myth of compost tea - learn the facts about a range of tips you may have heard through the years about healthy soil, pretty mulch, and more.

Feb 2014 | Article

Applying hydrated lime to my garden?

Q: I have heard about applying lime to my lawn and garden to improve my soil. Can I use the pictured product, and how would I apply it? There are no application directions.

A: View answer | View all featured questions

A guide to understanding fertilizers

Fertilizers come in many different forms, from naturally occurring in the soil to commercial or organic products, liquid and dry, and in many different formulations. Here's how to choose what your plants need.

Sally Reill | Jan 2019 | Article

Here's the scoop on chemical and organic fertilizers

Use these tips on how to apply organic amendments

Kym Pokorny | Mar 9, 2015 | News story

What do the numbers on fertilizer packages mean?

Apr 30, 2004 | News story

Mud and Manure Management Resources for Small Farms

Publications and documents demonstrating the art of Mud and Manure Management for the pastures and forage crop. These contain useful information that are important when managing and producing livestock on pasture.

Jul 2018 | Collection

Forages - hay and pasture collection

This collection has information on soil testing and ferilizing, renovation. forage management , hay, irrigation, feeding values, forage types, forage anti-quality factors, leasing pastures and more.

Shelby Filley | Aug 2019 | Collection

Nitrogen fertilizer: Where does it go?

Most Christmas tree growers fertilize with nitrogen (N) intending to improve tree color, growth, and ultimately value. Where does the fertilizer go after application? How much is actually taken up by the trees, stored in the ...

Chal Landgren, Michael Bondi, Steve Webster, Rick Fletcher | Jul 1994 | Article

Planting and caring for a fruit tree

Planting a new fruit tree? Dig a big hole, wait to apply fertilizer and keep an eye on pests. Here are more quick tips for taking care of your transplanted tree.

Steve Renquist | May 2015 | Article