IMPACT OF SOIL MANAGEMENT ON SOIL MICROBIAL COMMUNITIES
Agroecosystem Management Research
2011 Annual Report
1a.Objectives (from AD-416)
Determine the impact of soil management on soil microbial community structure and function using biochemical and molecular methods.
a. soil distubance effects on soil function
b. role of mycorrhiza on P nutrition of corn
1b.Approach (from AD-416)
Biochemical (e.g. lipid profiles) and molecular methods will be used to identify functional groups of soil microorganisms under contrasting management conditions. These measurements will be taken in conjunction with soil process (e.g. nutrient transformation and uptake) and crop production (e.g. yield and nutrient content) measurements.
Corn root samples were collected from an experiment studying irrigated corn production across a range of nitrogen rates. Mycorrhizal infection rates and mycorrhizal species were determined. Molecular methods were used to determine the role of mycorrhizal infection on plant phosphorus uptake.
ADODR monitoring includes site visits, phone calls, e-mails, and personal discussions.