University of California

Broccoli residues can control Verticillium wilt of cauliflower


Steven T. Koike
Krishna V. Subbarao

Authors Affiliations

ST. Koike is Plant Pathology Farm Advisor, Monterey and Santa Cruz counties; K.V. Subbarao is Associate Plant Pathologist/Associate Specialist in Cooperative Extension, Department of Plant Pathology, UC Davis and located at U.S. Agricultural Research Station, Salinas. The authors thank J. Aragon, S. Bassi, A. Caminay, S. Dacuyan, J.E. DeVay, K. Fowler, T.G. Gonzales, J.C. Hubbard, D. Lindsay, P. Niday, E.D. Oakes, J. Manassero, M. Mulanax, R. Miller, S. Ray, B. Taylor,J. Taylor, M. Vidauri, J. Wakeman, C.-L. Xiao, and California cauliflower growers. We thank Tri-Cal for applying the fumigant materials. This research was partially supported by grants from the UC DANR Special Grants Program, UC IPM Program and from the California cauliflower industry.

Publication Information

Hilgardia 54(3):30-33. DOI:10.3733/ca.v054n03p30. May 2000.

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Verticillium wilt, a damaging disease of cauliflower, was successfully managed in a multiple-year field study by incorporating broccoli residues into infested soil. In a study conducted from 1993 to 1995 in the Salinas Valley, cauliflower disease incidence and severity were consistently and significantly reduced in the broccoli residue plots when compared with no broccoli. The commercial standard plots fumigated with methyl bromide + chloropicrin had the lowest disease incidence and severity. In both years of our tarping study, Verticillium wilt severity was lowest in the metham sodium treatment. The cauliflower-Verticillium host-pathogen system therefore can act as a model for controlling soil-borne diseases without the use of synthetic chemicals.


Koike ST, Subbarao KV, Davis RM, Gordon TR. Verticillium wilt threatens coastal cauliflower crop. Cal Ag. 1996. 50(2):24-7.

Brown PD, Morra MJ, Sparks DL. Control of soil-borne plant pests using glucosinolate-containing plants, p. 167-231. Advances in Agronomy, Vol. 61 1997.

Gamliel A, Stapleton JJ. Characterization of antifungal volatile compounds evolved from solarized soil amended with cabbage residues. Phytopathology. 1993. 83:899-905. https://doi.org/10.1094/Phyto-83-899

Harbome JB, Baxter H. Phy-tochemical Dictionary: A Handbook of Bioactive Compounds from Plants.. 1993. Washington, D.C.: Taylor and Francis, Inc. 791p.

Koike ST, Subbarao KV, Davis RM, et al. Verticillium wilt of cauliflower in California. Plant Disease. 1994. 78:1116-21.

Mayton HS, Olivier C, Vaughn SF, Loria R. Correlation of f ungicidal activity of Brassica species with allyl isothiocyanate production in macerated leaf tissue. Phytopathology. 1996. 86:267-71. https://doi.org/10.1094/Phyto-86-267

Mojtahedi H, Santo GS, Hang AN, Wilson JH. Suppression of root-knot nematods populations with selected rapeseed cultivars as green manure. I. of Nematology. 1991. 23:170-4.

Subbarao KV, Hubbard JC. Interactive effects of broccoli residue and temperature on Verticillium dahliae microsclerotia in soil and on wilt in cauliflower. Phytopathology. 1996. 86:1303-10. https://doi.org/10.1094/Phyto-86-1303

Subbarao KV, Hubbard JC, Koike ST. Evaluation of broccoli residue incorporation into field soil for Verticillium wilt control in cauliflower. Plant Disease. 1999. 83:124-9. https://doi.org/10.1094/PDIS.1999.83.2.124

Koike S, Subbarao K. 2000. Broccoli residues can control Verticillium wilt of cauliflower. Hilgardia 54(3):30-33. DOI:10.3733/ca.v054n03p30
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