Thursday, January 5, 2012: 4:15 PM

Crystal Ballrooms K & L (Orlando World Center Marriott)

Robert B. Hutmacher , University of California - Davis & West Side REC

Mauricio Ulloa , USDA-ARS, SPA, Cropping Systems Research Laboratory

S. D. Wright , University of California

R. Michael Davis , University of California, Dept. of Plant Pathology

Mark Keeley , University of California Dept Plant Sciences

Gerardo Banuelos , University of California Cooperative Extension, Tulare County

Race 4 Fusarium (Fusarium oxysporum vas infectum) has become a more widespread issue affecting cotton production and management in the San Joaquin Valley of California. Factors thought to impact spread of the pathogen will be discussed in this presentation. A wide range of field and greenhouse screening efforts have been conducted to evaluate cultivar differences in resistance or tolerance to this pathogen, and recent results will be reviewed.

Fusarium Race 4 in the San Joaquin Valley: An Update