Allium white rot (AWR) caused by the fungus Sclerotium cepivorum and Fusarium basal rot (FBR) caused by Fusarium oxysporum fsp. cepae are two major soilborne diseases of onions and other Allium crops. Both diseases are very difficult to control as they form long-lived survival structures which remain in the soil for many years and chemical control is largely ineffective. Research is therefore aimed at developing alternative and more sustainable ways of reducing the impact of these diseases.
- Epidemiology and effect of environmental conditions on S. cepivorum and its interaction with microbial antagonists
- Biological control of AWR and FBR using Trichoderma spp. and composts
- Screening of onion diversity sets for resistance to FBR
- Defra IF0157: Vegetable Genetic Improvement Network. Breeding research to support sustainable farming of carrot and onion - current
- Defra HH3230SFV: Factors affecting the inoculum potential of soilborne plant pathogens - completed
- HortLINK HL0176 LFV: Integrated Allium white rot control using composts and Trichoderma viride - completed
- Defra HH3204SFV:Integrated use of biological control agents for sustainable control of Allium white rot - completed
- Biocontrol of soilborne plant diseases: use of mycoparasites that destroy sclerotia of plant pathogens
- 2007: Towards understanding the temporal dynamics of Allium white rot: factors affecting the infectivity of Sclerotium cepivorum sclerotia
- 2003: Integrated control of Allium white rot
- 2003: Biological control of Allium white rot by sclerotial degrading fungi
CLARKSON, J.P., SCRUBY, A., MEAD, A., WRIGHT, C., SMITH, B. & WHIPPS, J.M. (2006). Integrated control of Allium white rot with Trichoderma viride, tebeuconazole and composted onion waste. Plant Pathology 55, 375-386.
COVENTRY, E., NOBLE, R., MEAD, A. MARIN, F.R.M., PEREZ, J.A. & WHIPPS, J.M. (2006). Allium white rot (Sclerotium cepivorum) suppression with composts and Trichoderma viride in relation to sclerotia viability. Phytopathology 96, 1009-1020.
CLARKSON, J.P., MEAD, A., PAYNE, T. & WHIPPS, J.M. (2004). Effect of environmental factors and Sclerotium cepivorum isolate on sclerotial degradation and biological control of white rot by Trichoderma spp. Plant Pathology 53, 353-362.
CLARKSON, J.P., PAYNE, C., MEAD, A.. & WHIPPS, J.M. (2002). Selection of fungal biological control agents of Sclerotium cepivorum for control of white rot by sclerotial degradation in a UK soil. Plant Pathology, 51, 735-745.
CLARKSON, J.P., & WHIPPS, J.M. (2002). Control of sclerotial pathogens in horticulture. Pesticide Outlook, 13, 97-101.