16 projects

2012 to 2014

This research is determining the possibilities for inter-governmental cooperation across communities, school districts and planners, identify additional service areas which offer potential for efficiency gains under cooperation, and assess the motivators, obstacles and outcomes of shared service delivery.

2009 to 2012

Powdery mildew is one of the world's most destructive diseases of grapevines. We know that infection of grapevines occurs as soon as they begin to grow in spring, but epidemics seem to stall for about six weeks and go nowhere fast. We've found that it's our cold nights that are suppressing the disease. Two modes of action are suggested. First, cold nights stimulate a temporary defense response in the youngest, and ordinarily most-susceptible, leaves. Second, cold causes direct damage to the mildew colonies.

2008 to 2010

The National GAPs (Good Agricultural Practices) Program has developed a multifaceted approach to encourage and assist growers, packers, and farm workers with the implementation of good agricultural practices to reduce microbial risks in fresh fruits and vegetables. This program combines research, education, and extension to create dynamic educational materials including books, video, photo novels, coloring books, posters, websites, online courses, high school agriculture curricula, and magnets for the many diverse audiences that have an interest in produce food safety.


My research involves two core initiatives that relate to the structure and function of plant cell walls and their fundamental importance as sources of food, feed, fiber and bioenergy. The first involves a long term project to characterize the protein population, or proteome, of the plant cell wall and to study the expression and function of wall-localized proteins during plant growth and development, and following pathogen challenge.


eClips is a digital database of 10,000 clips and more than 40 podcasts, focused on entrepreneurship, business, and leadership. The material is based on hundreds of in-depth interviews as well as business presentations. eClips makes it possible for business people (including small business owners and entrepreneurs), educators, and students to find targeted and focused information, because it is organized by entrepreneur, company, demographics, topics, and keywords.


Apple replant disease occurs worldwide and was previously controlled by methyl bromide soil fumigation. We continue to evaluate non-chemical methods for controlling this serious disease problem, and studying the microbial bases for its causation and control. Our recent work has shown that several new rootstocks developed at Cornell have substantial resistance to this soil-borne disease, and may eliminate the need for soil fumigation.


It`s no surprise that severely diseased grapes make poor wine. However, we found that even trace levels of powdery mildew set in motion a sequence of events that results in severely downgraded and wine that could not be sold. The damage is not due to the powdery mildew itself, but to how it shifts the naturally occurring (and normally beneficial) microbial community on grape berries towards one that produces foul flavors and odors during winemaking.

2007 to 2012

Plant viruses invade a susceptible host to cause disease by transporting their genomes across the barrier of the plant cell wall. Doing this requires a unique class of proteins made by the virus, termed movement proteins. This process serves as a model for the transport of molecular complexes between plant cells and hence for the mechanism of cell-cell communication in plants.

2007 to 2011

Prior to the findings of this research, there were no research-based guidelines for juice manufacturers to target for percentage of rotted fruit for juice production or intervention methods to reduce patulin levels below regulatory limits. The findings suggest that the targeted culling rates for apples to be less than 0.1 percent of Penicillium expansum-infected fruit to ensure less than 50 ppb of patulin in the finished juice.


We research, design, develop, and apply advanced software and hardware tools for monitoring terrestrial and marine wildlife, and use results to assess the potential impacts of human activities on the environment and endangered or threatened species.