soil science
Comparison of Biofuel Systems (COBS)
This project seeks to identify and develop cropping systems that produce large quantities of biofuel feedstocks while protecting soil and water resources and increasing biodiversity on the Iowa landscape.
Colloid-Mediated Transport of Hormones with Land-Applied Manure
Endocrine-disrupting hormones may enter the environment via land application of livestock manure. With respect to both livestock production and soils, Iowa is the prototype for agriculture in the Midwest. Our hypothesis is that the risk of hormone transport can be better understood by knowledge of the mechanisms of sorption, desorption, and transport of colloid-hormone complexes.
Determining soil water evaporation and subsurface evaporation zones
Evaporation from the soil largely determines water availability in terrestrial ecosystems and the partitioning of solar radiation between sensible and latent heat. It is key to hydrology and climate. The evaporation process is complex, involving movement and phase change of water, varying with depth and time. Following water inputs, evaporation occurs at the soil surface, controlled by atmospheric demand. As surface soil water is depleted, evaporation becomes soillimited and shifts below the surface; nonetheless it is generally viewed as a strictly surface process.
PhD candidate John Jones was awarded with the Future Leaders in Science Award from the ASA-CSSA-SSSA. Speaking with colleagues who had attended the ASA-CSSA-SSSA Congressional Visits Day in the past led him to apply for the award. The tri-societies provide workshops and sessions for graduate students who have an interest in communicating their science to a broader audience. After interacting with actively engaged graduate students and representatives from the ASA-CSSA-SSSA science policy office, the Future Leaders of Science Award seemed like an excellent opportunity for John to expand his understanding of science communicator. 
Dr. John Pesek was a soil scientist, champion of sustainable agriculture, teacher and leader. Regrettably, our esteemed colleague Pages
