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Conservation Tillage Handbook Series
The First No-Till Step -- Combine Residue Spreading
Author: Roger Veseth, WSU/UI Conservation Tillage Specialist
Grower will tell you that one of the first steps in successful no-till and minimum tillage systems is uniform distribution of chaff and straw from the combine. It is an important option for managing weeds, diseases, fertility and other crop production factors in order to optimize crop health and yield potential under conservation tillage systems.
Chaff and straw spreading has also been a Northwest focus in conservation tillage research. A Pacific Northwest Extension publication summarizes the research results, potential impacts of combine chaff and straw rows, and the effectiveness of commercial attachments and combine modification for improving residue distribution. "Uniform Combine Residue Distribution for Successful No-Till and Minimum Tillage Systems," bulletin PNW297, is available for $.50 through PNW County Extension Offices or from the state publications offices: Idaho -- Ag Publications, University of Idaho, Moscow, ID 83844-2240 (208) 885-7982; Oregon -- Ag Communications, Publications Orders, Oregon State University, Administrative Services A422, Corvallis, OR 97331-2119 (541) 737-2513; Washington -- Bulletin Office, Cooperative Extension, Cooper Publications Bldg., Washington State University, Pullman, WA 99164-5912, phone (509) 335-2999 (WA residents add 7.5% sales tax).
The bulletin has also been reprinted as PNW Conservation Tillage Handbook Series No. 7 in Chapter 3. This publication and nearly all of the Handbook Series are now accessible on the World Wide Web Home Page (http://pnwsteep.wsu.edu) titled Pacific Northwest STEEP III Conservation Farming Systems Information Source.
Commercial chaff and straw spreaders are now available to fit most combine model. After numerous request for information on sources for combine residue spreading equipment, I decided to compile the following list of commercial equipment option to assist growers in locating equipment for their specific combines and production conditions.
This listing is not all inclusive. If you know of other equipment options that should be added to the list, please contact Roger Veseth, WSU/UI Conservation Tillage Specialist, Dept. of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID 83844-2339, phone 208-885-6386, FAX 885-7760 or e-mail (firstname.lastname@example.org). Note: To simplify information, trade names have been used. Neither endorsement of named products is intended, nor criticism implied of similar products not mentioned.
Contact your combine dealer for information on chaff and straw spreading equipment for your combines. Many combine dealers are also dealers for some of the commercial combine residue spreading equipment on this list.
Many growers have also made their own shop modifications for improving residue distribution. Copies of one set of plans from a successful grower modification of the flail system of Case-IH rotary combines are available from Veseth (above).
Preliminary Listing of Commercial Combine Residue Spreading Equipment
The Pacific Northwest Conservation Tillage Handbook is a large three-ring binder handbook that is updated with new and revised Handbook Series publications. It was initiated in 1989 as a PNW Extension publication in Idaho, Oregon and Washington. Updates to the Handbook are provided when the updating card is returned. By 1997, 34 new PNW Conservation Tillage Handbook Series have been added to the original 98 publications Copies are available for $20 through county extension offices in the Northwest or ordered directly by calling state extension publication offices: Idaho -- (208) 885-7982; Oregon -- (541)-737-2513; Washington -- (509) 335-2999 (some shipping and handling charges and sales tax may apply).
Its now accessible on the Internet! All of the PNW Conservation Tillage Handbook and Handbook Series are being put on the World Wide Web Home Page (http://pnwsteep.wsu.edu) titled Pacific Northwest STEEP III Conservation Farming Systems Information Source. The Web site also contains recent issues of the PNW STEEP III Extension Conservation Tillage Update, listings of other conservation tillage information resources, coming events and much more. For more information on the Handbook or updates to the Handbook, contact Roger Veseth, WSU/UI Conservation Tillage Specialist, Plant Soil and Entomological Sciences Department, University of Idaho, Moscow, ID 83844-2339, phone 208-885-6386, FAX 208-885-7760, e-mail (email@example.com).
Pacific Northwest Conservation Tillage Handbook Series publications are jointly produced by University of Idaho Cooperative Extension System, Oregon State University Extension Service and Washington State University Cooperative Extension. Similar crops, climate, and topography create a natural geographic unit that crosses state lines in this region. Joint writing, editing, and production prevent duplication of effort, broaden the availability of faculty, and substantially reduce costs for the participating states.
For herbicide application recommendations, refer to product labels and the Pacific Northwest Weed Control Handbook, an annually revised extension publication available from the extension offices of the University of Idaho, Oregon State University and Washington State University. To simplify information, chemical and equipment trade names have been used. Neither endorsement of named products is intended, nor criticism implied of similar products not mentioned.
Cooperative Extension programs and policies comply with federal and state laws and regulations on nondiscrimination regarding race, color, gender, national origin, religion, age, disability, and sexual orientation. The University of Idaho Cooperative Extension System, Oregon State University Extension Service and Washington State University Cooperative Extension are Equal Opportunity Employers.
us: Hans Kok, (208)885-5971
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