U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Crops Pathology and Genetics Research: Davis, CA
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    Careers


        


                    Outreach Events
                        UC Davis Picnic Day
                                    Kinders go to College
                                    STEM Girls
                                    Future Scientist Program
                                    Agriculture Future of America
                                    Wallace-Carver Fellowship
                                    Young Scholars Program
                                    Annual Awards Banquet
                    About Us
                        About Us
                                    Our Mission
                                    Principal InvestigatorsSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Pacific West Area Davis, California Crops Pathology and Genetics Research Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications
- Etiology and Biology of Tree Crop Diseases
- Rice Genetics
- Sustainable Floriculture
- Sustainable Viticulture

Title:   Author  item
                                            Browne, Gregitem
                                            Becherer, Harolditem
                                            MCLAUGHLIN, S - UC DAVIS PLANT PATHitem
                                            FENNIMORE, S - UC DAVIS PLANT PATHitem
                                            DUNIWAY, J - UC DAVIS PLANT PATHitem
                                            MARTIN, F - UC DAVIS PLANT PATHitem
                                            AJWA, H - UC DAVIS PLANT PATHitem
                                            WINTERBOTTOM, C - UC DAVIS PLANT PATHitem
                                            GUERRERO, L - UC DAVIS PLANT PATH
  Submitted to: Proceedings of Methyl Bromide Alternatives Conference
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 6/1/2003
                                    Publication  Date: 7/1/2003
                                    Citation: Browne, G.T., Becherer, H.E., Mclaughlin, S., Fennimore, S., Duniway, J., Martin, F., Ajwa, H., Winterbottom, C., Guerrero, L. 2003. Integrated management of phytophthora on strawberry without methyl bromide. Proceedings of Methyl Bromide Alternatives Conference.Interpretive Summary: Phytophthora cactorum causes crown and root rot and plant collapse on strawberries in California and in most other areas where strawberries are grown commercially.  Pre-plant soil fumigation with methyl bromide-chloropicrin (MB:Pic) mixtures helps prevent disease caused by P. cactorum and other soilborne pathogens by reducing pre-plant inoculum densities. We determined potential contributions of genetic resistance, systemic fungicides, and alternative fumigants for managing Phytophthora crown rot on strawberries without methyl bromide.  Among cultivars tested for resistance to P. cactorum, selections ranged from resistant (Camino Real, Pacific, Parker, Cal Giant [CG] 2, CG 3, and CG4) to highly susceptible (Catalina, Diamante, Gaviota, Pajaro, and Ventana.  Aromas and Camarosa were intermediate in susceptibility.  Apparently, there is potential to select cultivars that combine general horticultural acceptability with moderate to high resistance to P. cactorum. Both Aliette WDG (applied as labeled as a plant dip plus 5 monthly foliar sprays) and Ridomil Gold (applied as a soil drench to mimic chemigation at planting and at two additional intervals during the fruiting season) prevented most of the yield loss caused by P. cactorum on cultivars Aromas and Diamante.   Fumigants iodomethane and propargyl bromide were simiar and superior, respectively, in efficacy compared to methyl bromide for reducing survival of P. cactorum inoculum in soil.  Fumigants chloropicrin, and Telone C35 were occasionally less effective than methyl bromide for this purpose.
                                Technical Abstract: Phytophthora cactorum causes crown and root rot and plant collapse on strawberries in California and in most other areas where strawberries are grown commercially.  Pre-plant soil fumigation with methyl bromide-chloropicrin (MB:Pic) mixtures helps prevent disease caused by P. cactorum and other soilborne pathogens by reducing pre-plant inoculum densities. We determined potential contributions of genetic resistance, systemic fungicides, and alternative fumigants for managing Phytophthora crown rot on strawberries without methyl bromide.  Among cultivars tested for resistance to P. cactorum, selections ranged from resistant (Camino Real, Pacific, Parker, Cal Giant [CG] 2, CG 3, and CG4) to highly susceptible (Catalina, Diamante, Gaviota, Pajaro, and Ventana.  Aromas and Camarosa were intermediate in susceptibility.  Apparently, there is potential to select cultivars that combine general horticultural acceptability with moderate to high resistance to P. cactorum. Both Aliette WDG (applied as labeled as a plant dip plus 5 monthly foliar sprays) and Ridomil Gold (applied as a soil drench to mimic chemigation at planting and at two additional intervals during the fruiting season) prevented most of the yield loss caused by P. cactorum on cultivars Aromas and Diamante.   Fumigants iodomethane and propargyl bromide were simiar and superior, respectively, in efficacy compared to methyl bromide for reducing survival of P. cactorum inoculum in soil.  Fumigants chloropicrin, and Telone C35 were occasionally less effective than methyl bromide for this purpose.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov