Pastures and Pasture Management

True Armyworm
True Armyworm
Useful publications on a variety of pasture management subjects:


Who's Coming to Dinner?

A video description of how animals graze and preferred forage.


Bee Pasture Report:

Native bees which provide valuable pollination services in agricultural and natural landscapes have been in decline in recent years.  Bee conservation efforts are focused on establishment of bee-attractive plants adjacent to agricultural fields but, due to high land value, such bee beneficial habitats are typically limited in size.  In contrast, pastures provide an opportunity for native bee conservation on a much larger scale  This study looked at the effects of establishing plants in test pastures. Link


PNW Weed Management Handbook:

Information on herbicides registered for pasture and hayland weed control and also control of problem weeds.  Look under Contents for the pasture and hayland section.  Link


Toxic Plants in Pasture and Hay: Link


True Armyworm: see photo above

There are many reports that the True Armyworm is damaging Tall Fescue and Orchardgrass seed fields.  You may want to check Tall Fescue and Orchardgrass pastures and hayfields at this time for any sign of damage or infestation.

Key characters:

1) Several alternating dark and light stripes along body

1-2 thicker yellow-orange bands running along each side of body from head to tail.

2) Look at the black triangles or marks on four abdominal prolegs


Grasshopper: Link

Winter Cutworm:  Link

Oregon Forage and Grasslands Council:

Management of Livestock Operations During Drought:


 Phosphorus & Potassium Soil Tests
 Pastures:  Western Oregon & Western Washington, Fertilizer Guide 63
 Liming Coastal Pastures
 Evaluating Soil Nutrients and pH by Depth EM 9014
 Fertilizer and Lime Materials, Fertilizer Guide 52

Soil Acidity in Oregon: Understanding and Using Concepts for Crop Production, EM 9061

 Applying Lime to Raise Soil pH for Crop Production (Western Oregon), EM 9057

Post-harvest Soil Nitrate Testing for Manured Cropping Systems West of the Cascades,

EM 8832


Wild Barley Project in Clackamas County


Pasture Management During Critical Periods (narrated by Gene Pirelli)



Oregon State University research has paved the way for livestock producers to apply selenium with fertilizer in Oregon. This document summarizes the 8 years of research work on selenium fertilization as a way to prevent white muscle disease and reproductive problems associated with a deficiency of selenium in grazing livestock diets:

"The Western Oregon and Washington Pasture Calendar" NEW 2017

"Winter Cutworm"  NEW 2016

"Annual Cover Crop Options for Grazing and Haying"

"Selenium Supplementation Strategies for Livestock in Oregon"

"Selenium Fertilization to Prevent Selenium Deficiency"

"High Rates of Selenium Supplement for Sheep"

"Summer and Fall Pasture Management"

"Pasture and Hayland Renovation for Western Washington and Oregon. EB 1870."

"Early Spring Forage Production for Western Oregon Pastures. EM 8852-E. January, 2004." 

Tansy Ragwort Control  *New changes 2012*

Attracting Birds of Prey for Rodent Control,  EC 1641

Strategies for Efficient Irrigation Water Use, EM 8783

Business Management Guide for Grazers  by Shannon K. Williams and C. Wilson Gray UICE; At this URL:


Using A Grazing Stick for Pasture Management

It is important to note that not all pasture sticks are exactly the same. Sticks from each state and/or region may vary based on different forage species, production, and growth stages  due to climate, elevation, and other factors. Most states and/or regions that have pasture sticks customize them to specifically address their growing conditions.

Contact your local Soil and Water Conservation District or NRCS office for a source of pasture sticks.

New requirements for planting crucifer crops in the Willamette Valley for both seed and forage

Rangelands and Natural Resources

Pasture and Grazing Management in the Northwest

The comprehensive resource for anyone who manages livestock on pastures in the Northwest, this 208-page book offers pasture managers information and tools to enable their pastures and their livestock to reach their maximum production potentials. Seventeen chapters proceed from planning to budgeting.

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