Project Number: 5358-22000-035-00
Project Type: Appropriated

Start Date: Apr 30, 2007
End Date: Apr 29, 2012

Objective:
Quantify the occurrence and distribution of emerging pathogens, especially choke and smut fungi, that impact the production and export of turf and forage seeds; characterize environmental and biological factors that affect the epidemiology of the economically important grass pathogens Epichloe and Puccinia; identify host characteristics that impact resistance of grasses to ergot; develop and add an overwinter survival component to a stem rust prediction model; and implement a web-based disease management decision tool for stem rust in grasses.

Approach:
Distribution and occurrence of emerging pathogens are quantified through disease surveys. Environmental factors that affect development of Epichloe and Puccinia or affect resistance to ergot are elucidated under controlled environment or field conditions. Statistical, epidemiological, and systems analysis techniques are used to develop and integrate disease prediction subcomponents into a comprehensive stem rust prediction model used in a web-based decision aid for optimization of timing of fungicides for stem rust control. Formerly 5358-22000-031-00D (3/07).