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Improved management strategies for diseases of oilseed rape - AR0212


This proposal continues and develops field investigation necessary for the improvement of disease management in winter oilseed rape through understanding and quantifying key aspects of crop, pathogen and environmental interactions. The project supports the MAFF policy of encouraging strategies for disease control which reduce unnecessary pesticide inputs by better targeting of treatments, improve sustainability of the crop post-Agenda 2000 and benefit the environment. The project comprises two major components, which benefit from and validate the output of a (MAFF funded) IACR project studying more fundamental aspects of disease biology and epidemiology.

1. Factors affecting the development of sclerotinia stem rot
- Manipulation of crop density and evaluation of a novel breeding line with fewer petals. Further work is needed to determine the factors that affect retention of petals on leaves and leaf axils as stem rot only develops from infected petals that fall and adhere to leaves or axils. The objectives of the proposed research will be to investigate the contribution of crop canopy density and flower numbers on risk of stem rot and determine the effect of these and weather factors on the numbers of petals retained and the incidence of stem rot. The experimental sites for Sclerotinia stem rot of oilseed rape will be at ADAS Terrington and ADAS Wolverhampton. Studies on physical factors affecting relationships between fallen petals and initiation of stem not at IACR, within project AR0211, will underpin this work

2. Importance of factors affecting the host plan on the development of phoma leaf spot and canker
- Interactions between leaf size and persistence of leaves and the contribution of genetic resistance to management of canker epidemics. Experiments will be carried out at ADAS Boxworth and ADAS high Mowthrope to give contracting environmental conditions and disease pressure and will be closely linked with fundamental studies at IACR Rothamsted. The development of the pathogen within the plant will be investigated in relation to sowing date and seed rate (variables designed to produce plants of differing size) and in relation to cultivar resistance.

The results will contribute to MAFF and HGCA objectives of developing sustainable production.
Project Documents
• Final Report : Improved management strategies for diseases in oilseed rape   (267k)
Time-Scale and Cost
From: 1999

To: 2003

Cost: £320,991
Contractor / Funded Organisations
Arable Farming              
Crop Diseases              
Oilseed Rape              
Fields of Study
Arable Crops