Submitted to: Book Chapter Publication Type: Book / Chapter
Publication Acceptance Date: December 15, 1998 Publication Date:
N/A Soilborne pathogens cause severe disease problems on plants
grown under greenhouse conditions. This is the case both in
greenhouses based on low technology and in advanced high
technology houses. Chemical control is often unreliable because
it can be difficult to reach the targeted soilborne pathogen
with the pesticide and because of the development of fungicide
resistance by some pathogens. When soils are treated with
chemicals it is not uncommon to have problems with pathogens
which have the ability to quickly recolonize the disinfested
soil. There is also an increasing concern for the environment
and how it is influenced by pesticide use. Thus, both for
environmental protection reasons, and since the possibilities
for chemical control of soilborne pathogens are limited, growers
are forced to seek new disease control measures. Development of
IPM programs which include the control