Search Results

You are looking at 1 - 6 of 6 items for :

  • " Phytophthora erythroseptica " x
  • Refine by Access: All x
Clear All
Free access

Clive Kaiser, Philip B. Hamm, Stacy Gieck, Nicholas David, Lynn Long, Mekjell Meland, and J. Mark Christensen

, Phytophthora cactorum , Phytophthora erythroseptica , Pythium ultimum , and Phytophthora cinnamomi were maintained and analyzed on Corn Meal Agar (CMA) (Becton, Dickinson & Co.). Before inoculation, fungal and oomycetes isolates were subcultured onto these

Free access

K.E. Maloney, W.F. Wilcox, and J.C. Sanford

`Titan' red raspberry (Rubis idaeus L.), highly susceptible to root rot caused by Phytophthora fragariae Hickman var. rubi Wilcox & Duncan (syns. P. erythroseptica Pethyb., “highly pathogenic” P. megasperma Drechs.), was planted in June 1990 in a silt loam naturally infested with the pathogen. Raked beds (0.36 m high) dramatically reduced disease incidence and severity relative to flatbed treatments. In contrast, metalaxyl at 372 mg·m-1 of row provided little benefit when applied to flat beds and provided consistently moderate but statistically insignificant effects when applied to raised beds. Relative to the flat bed system, primocane vigor was increased in 1992 by 16%, 190%, and 224% in the flat bed plus metalaxyl, raised bed, and raised bed plus metalaxyl treatments, respectively; total yields were increased by 7%, 231%, and 272% with these same respective treatment. The results indicate that raised-bed planting systems can provide substantial control of phytophthora root rot of red raspberries even when highly susceptible varieties are grown on otherwise marginal sites. Metalaxyl appears more effective as a supplement rather than substitute for raised beds under such conditions. Chemical name used: N- (2,6-dimethylphenyl) -N- (methoxyacetyl)alanine methyl ester (metalaxyl).

Free access

Wendy K. Hoashi-Erhardt, Patrick P. Moore, Gwenyth E. Windom, and Peter R. Bristow

caused by Phytophthora erythroseptica J. Amer. Soc. Hort. Sci. 113 588 591 Converse, R.H. Schwartze, C.D. 1968 A root rot of red raspberry caused by Phytophthora erythroseptica Phytopathology 58 56 59

Free access

Michael Dossett, Chaim Kempler, and Hugh Daubeny

-Food Research Center, 6947 Highway #7, Agassiz, British Columbia, V0M 1A0, Canada. Literature Cited Bristow, P.R. Daubeny, H.A. Sjulin, T.M. Pepin, H.S. Nestby, R. Windom, G.E. 1988 Evaluation of Rubus germplasm for reaction to root rot caused by Phytophthora

Full access

Thomas W. Walters, John N. Pinkerton, Ekaterini Riga, Inga A. Zasada, Michael Particka, Harvey A. Yoshida, and Chris Ishida

, H.S. 1989 Effect of Pratylenchus penetrans on root rot of red raspberry caused by Phytophthora erythroseptica Acta Hort. 262 231 240 Vrain, T.C. Keng, J.C.W. 1986 Application of nonvolatile nematicides through a trickle irrigation system to

Free access

Johanna Del Castillo Múnera and Mary K. Hausbeck

inoculation technique. Plant Health Progress 10 Taylor, R. Salas, B. Secor, G. Rivera, V. Gudmestad, N. 2002 Sensitivity of North American isolates of Phytophthora erythroseptica and Pythium ultimum to mefenoxam (metalaxyl) Plant Dis. 86 797 802 USDA 2013