Host Growth Can Cause Invasive Spread of Crops by Soilborne Pathogens

Host Growth Can Cause Invasive Spread of Crops by Soilborne Pathogens

Invasive soilborne plant pathogens cause substantial damage to crops and natural populations, but our understanding of how to prevent their epidemics or reduce their damage is limited. A key and experimentally-tested concept in the epidemiology of soilborne plant diseases is that of a threshold spacing between hosts below which epidemics (invasive spread) can occur. We extend this paradigm by e...

Impact of soil health management practices on soilborne pathogens, nematodes and root diseases of vegetable crops

Various cultural practices, including the use of cover and rotational crops, composts, tillage systems, and others have been promoted as management options for enhancing soil quality and health. All cultural practices are known to directly or indirectly affect populations of soilborne pathogens and the severity of their resultant root diseases. Soil biology is a major component and contributes ...

Reduced dosages of methyl bromide applied under gas-impermeable plastic "lms for controlling soilborne pathogens of vegetable crops

Four experimental trials were carried out at Albenga (Northern Italy) to evaluate the e!ectiveness of reduced dosages of methyl bromide (MB) applied under gas-impermeable "lms in controlling soilborne pathogens of vegetable crops. Forty and thirty g/m2 of MB applied under di!erent types of gas-impermeable "lms controlled Rhizoctonia solani on bean, lettuce and basil, Fusarium oxysporum f. sp. b...

Plant pathogens: how can molecular genetic information on plant pathogens assist in breeding disease resistant crops

Numerous phytopathogenic fungi and Oomycete species cause disease on crop plants. Over the past 17 years a combination of protein purification and forward and reverse genetics has lead to the identification of > 150 distinct pathogenicity and virulence genes required by pathogens to cause disease. Many conserved molecular mechanisms are now recognised that underpin the pathogenesis of very dive...

Field Flooding for Controlling Soilborne Potato Pathogens in Western Washington