Slow sand filtration has been shown to effectively reduce Phytophthora zoospores and Fusarium oxysporum spores in irrigation water. This experiment tested the reduction of Phytophthora capsici numbers by slow sand filtration systems without pre-exposure to the pathogen and the resilience of the system to a short period without water, as might be caused by a pump failure. The slow sand filtration system greatly reduced Phytophthora colony forming units and transmission without prior exposure to the organism. In addition, Phytophthora reduction by the slow sand filter was equally effective before and after a simulated pump failure. The results suggest that slow sand filters are effective at reducing larger organisms, such as Phytopthora zoospores, without special preparations while reduction of smaller spores from Fusarium requires special treatment.
|Advisor:||Oki, Lorence R.|
|Commitee:||Scow, Kate M., Stanghellini, Michael E.|
|School:||University of California, Davis|
|Department:||Horticulture and Agronomy|
|School Location:||United States -- California|
|Source:||MAI 52/01M(E), Masters Abstracts International|
|Subjects:||Horticulture, Plant Pathology|
|Keywords:||Fusarium oxysporum, Phytophthora capsici, Plant pathology, Slow sand filtration, Transmission assay, Water|
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