Overview of Long-Term Research
CBARC/OSU
And
CPCRC/ARS
Introduction
Long-term research guides future agricultural development by identifying the effects of crop rotation, variety development, fertilizer use, aerial and surface contamination, and organic amendments on soil productivity and other beneficial soil properties. Comprehension and evaluation of many changes often requires 10-20 years to identify and quantify. Soil microflora and soil-borne plant pathogens require from 2-8 years in a new cropping sequence or tillage system to reach a stable equilibrium. To this end, long-term experimentation is required to understand interactions among soil, water, and plant factors. This information is essential for both agronomic and agricultural policy decisions. The oldest experiments in the Pacific Northwest(PNW) are at CBARC, Pendleton, in the intermediate rainfall zone.
The Pendleton Agricultural Research Center has several ongoing long-term experimental sites. The earliest was started in 1931, the latest in 1997. The Residue Management and Tillage-Fertility experiments are among the oldest replicated research experiments in the western U.S. All have a documented history of crop variety, tillage, date of seeding, and grain yield. The studies are representative of most of the cropping systems in the Pacific Northwest intermountain cereal region that receives less than 18-inches of precipitation.
The people who make it happen: Applying amendments to Crop Residue plots
Overview | Agronomic and Policy Considerations
Climate and Soils | Staff | Publications
Project Leader: Dr. Stephen Machado Stephen.Machado@oregonstate.edu
Webmaster: Karl Rhinhart Karl.Rhinhart@oregonstate.edu
Please feel free to contact us with your questions or comments
This page was last updated on January 23, 2004