1a. Objectives (from AD-416)
The objectives of this agreement are to 1) Determine how rising temperature alters responses of crop and weed physiology, growth, and product quality to elevated carbon dioxide; 2) Assess genotype by environment interactions in crop responses to elevated carbon dioxide and temperature, and 3) Determine whether responses to rising atmospheric carbon dioxide and temperature of weeds of the crop systems used in Objectives 1 & 2 will increase their range, competitiveness and resistance to control.
1b. Approach (from AD-416)
Research will focus on determining how rising temperature alters responses of crop and weed physiology, growth, and product quality to elevated carbon dioxide. Differences among genotypes within several crop species in responses to elevated carbon dioxide and temperature will be assessed to identify traits which would help to adapt crops to these global change conditions. Responses of weeds in a locally and nationally important crop system will be evaluated to determine if rising atmospheric carbon dioxide and temperature will increase their impact on crop yields and their resistance to control by glyphosate, a popular herbicide. Work will be conducted in controlled environment chambers and in field plots with open top chambers and with a free air carbon dioxide enrichment system.
3. Progress Report
The field experiments planned for the summer of 2010 have all been initiated. Planned work in controlled environment chambers is on hold, until the controlled environment facility becomes operational again. There are no milestones for 2010, as the project began in May, 2010, and the first milestones are at 12 months.