Mussie Y. Habteselassie Crop and Soil Sciences UGA Griffin Campus P & T Presentation 2013 SPRING FACULTY MEETING, MACON, GA THE SOIL MICROBIOLOGY PROGRAM.

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Presentation transcript:

Mussie Y. Habteselassie Crop and Soil Sciences UGA Griffin Campus P & T Presentation 2013 SPRING FACULTY MEETING, MACON, GA THE SOIL MICROBIOLOGY PROGRAM

 70% research & 30% teaching appointment  Outline: Research Program (sample projects) Teaching Responsibilities INTRODUCTION

RESEARCH PROGRAM  Environmental Soil Microbiology Program (ESM) I. The Ecology Of Human And Animal Pathogens In Soils II. Environmental Services Of Soil Microbial Community III. Microbial Water Quality

I. Ecology Of Human And Animal Pathogens In Soils  Use of model microorganisms Lux/GFP marked E. coli O157:H7/Salmonella spp Antibiotic resistant E. coli/Salmonella spp Ecology of pathogens in soils Transmission to produce Survival

Current Projects  1. Salmonella And Norovirus Survival In Organic and Conventional Soils  2. The Role Of Microbial Diversity And Activity In The Suppression Of Salmonella Persistence In Soils  3. Soil Organic Matter Accumulation On Gloves During Lettuce Harvest and Its Effect On Pathogen Persistence: Co- PI On $338,414 Grant From UC Davis.

Results so far….

II. Environmental Services of Soil Microorganisms Soil microbes & their environmental services Pollutant remediation N & C cycling  Approach Molecular microbiology – targeting functional genes Stable isotope techniques – process characterization

Current Projects  4. N Cycling Under Contrasting Agricultural Management Systems  Organic vs conventional farming systems  USDA-AFRI Microbial Communities Program. Habteselassie, M.Y. (Co- PI):$499,894  Closely collaborates with Miguel Fig. Simplified Internal Soil N Cycle

Results so far….

 5. The Dynamics of Ammonia Oxidizers In Pasture Lands Under Long-term Poultry Litter Application  Eatonton and Watkinsville long term field plots  In collaboration with Miguel Cabrera Current Projects…

 Changes in soil N cycling organisms following repeated poultry litter application Ammonia Oxidizing Bacteria Ammonia Oxidizing Archaea Treatment Plots – different rates Control Plots Treatment Plots – different rates Results so far….

 6. Volatile Organic Compounds (VOC) Metabolizing Bacteria In Indoor Plants In collaboration with S. Pennisi and S. Kays - Horticulture Current Projects…

South Korea: huge interest in phytoremediation

Results so far….

III. Microbial Water Quality Emphasis Survival in contaminated water Sources Food safety link – use of contaminated water for irrigation

 7. Impacts of On-site Wastewater Treatment Systems (OWTS) On Water Quality and Quantity In Streams Of Urbanizing Watersheds of Metro-Atlanta Area Current Project  Supported by $567,000 NIFA Grant: M. Habteselassie, J. Clarke, D. Radcliffe, Q. Huang, M. Risse, E. Bauske, J. Mullen

Study Site Watershed Characteristics OWTS DensityLowHigh Drainage area (mi 2 ) #OWTS/ mi River Basins Oconee and Ocmulgee CountyGwinnett

Results so far… 2012: Habteselassie, M.Y. Radcliffe, D., Clarke, J.,… Evaluation of the impact of on-site wastewater treatment systems on water quality in urbanizing watersheds. In Annual Meetings Abstracts. ASA, CSSA, and SSSA, Madison, WI. 2012: Habteselassie, M.Y. Radcliffe, D., Clarke, J.,… Watershed-scale impacts of on-site wastewater treatment systems on water quality and quantity: Results for Water Quality Indicators. In Land Grant/See Grant National Water Conference, Portland, OR. 2012: Radcliffe, D., Clarke, J., Habteselassie, M.Y.,… Watershed-scale impacts of on-site wastewater treatment systems on water quality and quantity: Results for nitrogen and base-flow yield. In Land Grant/See Grant National Water Conference, Portland, OR.

Results so far…

TEACHING #CoursesYr TaughtStudent # 1*CRSS 4610/6610: Soil MicrobiologyEvery Fall69 2CRSS 3060: Soils and HydrologyEvery Fall23 3CRSS 4580/6580: Soil Erosion and Conservation AESC 3920: Ag. and Environmental Sc. Internship 2010, AESC 4960: Undergraduate Research

Required Courses Course Name CRSS 4610/6610Soil Microbiology CRSS 3060Soils and Hydrology AESC 4960Undergraduate Research AESC 3510 AESC 4190/6190 CRSS 4440/6440 CRSS 3050 …TEACHING Environmental Resources Science the Griffin Campus 43%