Abstract: Effects of Crop Trimming on Automated Measurements of N2O and CO2 Emissions. (ASA, CSSA and SSSA International Annual Meetings (2016))

270-1 Effects of Crop Trimming on Automated Measurements of N2O and CO2 Emissions.

Tuesday, November 8, 2016: 1:35 PM

Phoenix Convention Center North, Room 227 A

Kirill Kostyanovsky¹, David R. Huggins², Claudio O. Stockle³, Sarah Rachel Waldo⁴, Brian Lamb³ and David J. Brown³, (1)Washington State University, Washington State University, Pullman, WA
(2)USDA-ARS, Pullman, WA
(3)Washington State University, Pullman, WA
(4)405 Spokane Street., P.O. Box 642910, Washington State University, Pullman, WA

Audio File Recorded Presentation

Abstract:

Effects of crop trimming on automated flow-through chamber system measurements of N2O and CO2 emissions were evaluated in the winter wheat system in inland Pacific Northwest. Wheat trimming in the area covered by 16 Licor 8100A chambers took place in late April, middle of May and middle of July at conventional tillage winter wheat site. Wheat in the chamber area was also trimmed in the middle of May and midle of July at the identical no-till winter wheat site. Soil moisture and temperature were measured in order to distinguish between the effects of wheat trimming and changes in physical conditions on N2O and CO2 flux. Effects of crop removal on measurable N2O and CO2 emissions in conventional and no-till winter wheat systems are being evaluated.

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