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ARS Home » Pacific West Area » Pendleton, Oregon » Columbia Plateau Conservation Research Center » Research » Publications at this Location » Publication #82557
Title: CARBON DIOXIDE LOSS FROM TILLED AND UNTILLED SOIL IN THE PACIFIC NORTHWEST

Author
item Douglas Jr, Clyde
item Albrecht, Stephan
item Rickman, Ronald

Submitted to: Agronomy Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 6/10/1997
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: There is a need to understand soil carbon changes as a result of different tillage practices in crop management systems. Carbon dioxide loss from a Typic Haploxeroll soil was evaluated for three different tillage systems, no-till, chisel, and moldboard plow, after a crop of winter wheat (Triticum aestiavum L.). Carbon dioxide flux was measured using a plexiglas chamber and a Carbon dioxide analyzer. Air permeability, soil moisture, and soil and air temperature were also measured at each sample date. Cumulative Carbon dioxide flux in 111 d averaged 2300, 2600, and 3600 kg/ha for no-till, chisel, and moldboard plow, respectively. The large cumulative Carbon dioxide flux from the moldboard plow treatment appeared to be from decomposition of wheat residue following incorporation into the soil.