The aim of this project is to examine a range of candidate biocides (chlorine dioxide, hydrogen peroxide and didecyl dimethyl ammonium chloride) and physical approaches (thermal and UV treatment) for their efficacy and ease of use against stem nematode and Fusarium basal rot.
Narcissus growers can encounter a range of problems that can impact on both the quality and yield of flowers and bulbs unless they are identified and dealt with. Often, such problems are linked to pests and diseases, but a range of physiological and cultural disorders may also be encountered.
Smoulder and white mould are the most common and damaging foliar diseases affecting commercial narcissus production. Leaf scorch is the main foliar disease of Tazetta narcissus, especially on the Scilly Isles. This factsheet provides information on biology of the three diseases and guidelines for their effective management.