ISHS Acta Horticulturae 126: Symposium on Substrates in Horticulture other than Soils In Situ
THE INFLUENCE OF DOMESTIC WASTE COMPOST ON PLANT DISEASES |
| Authors: | C. Van Assche, P. Uyttebroeck |
| Abstract:
The infection of Phaseolus vulgaris and Pisum sativum by Rhizoctonia solani and Pythium ultimum was reduced in our experiments by incorporating increasing quantities of domestic waste compost in a sandy loam soil inoculated with the higher mentioned pathogens. In the biological control of soil borne plant pathogens use is also made of organic matter - though of vegetable origin - but a straight explanation for this precultural measure cannot be given because soil characteristics, as well as microflora, host plant and pathogen are influenced. Next to extensive changes in the physical, physico-chemical and chemical characteristics of the soil one has to keep in mind the quantitative and qualitative shift in the soil microflora in which a reduced infection can be attributed to a changed pathogenicity and inoculum density of the pathogen as well as to a reduced predisposition of the host plant. | |
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