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Customized Growing Degree Day Calculations and Forecasting

This document provides step by step instructions for calculating growing degree day status and viewing growing degree day forecasts available from the uspest.org website. The uspest.org website allows users to select a weather station near them and then set their own degree units, lower and upper thresholds for growing degree calculations. Most pre-calculated growing degree reports use a default of 50F as their lower threshold. Unfortunately, this is not accurate for many of the crops we grow in Oregon. Thus, the ability to custom calculate and generate forecasts for growing degree days is ideal. Check out uspest.org, follow these instructions and get ahead on your planning!

Betsy Verhoeven | Dec 2019 | Fact Sheet

Why Does Your Tree Look Sick?

Most “sick tree” problems can be traced back to underlying stresses that have reduced the tree's vigor, making it more vulnerable to diseases or insect pests.

Jun 2018 | Article

How to collect a plant specimen for disease diagnosis

A guide for how to collect and where to get a sample analyzed for plant diseases.

Melodie Putnam, Carol Savonen | Jul 2014 | Article

Grazing Management Options for Riparian Areas

Our hope is to make you better acquainted with the important functions of riparian areas on your ranch, give you some ideas on how to manage them effectively, and provide a framework for developing grazing management that incorporates these areas into your overall cattle operation.

Dustin Johnson | Dec 2019 | Article

Weed management for blueberry fields in the Pacific Northwest

Weeds are always a difficult problem in blueberry production! They start to show up shortly after transplanting, and tend to become more problematic as time goes on. There are, however, strategies that help to control weeds in...

Tim Miller | Mar 2015 | Article

Grapevine Trunk Diseases in Oregon

A summary of the main trunk diseases causing issues in Oregon and management methods.

Melodie Putnam | Mar 2019 | Article

Using alternative feedstuffs

Producers should routinely evaluated alternative feedstuffs as a means to supplement existing forage resources and reduce feed costs.

David Bohnert | Sep 2019 | Article