ISHS Acta Horticulturae 255: III International Symposium on Soil Desinfestation
USE OF MICROBIAL ANTAGONISTS TO CONTROL SOIL BORNE PATHOGENS IN GREENHOUSE CROPS |
| Author: | H. Bochow |
| Abstract:
Results of model experiments and large scale trials in greenhouses were presented on the biological control of the carnation wilt disease (Fusarium oxysporum f.sp. dianthi), corky root disease of tomatoes (Pyrenochaeta lycopersici) and the Phomopsis root rot disease of cucumbers (Phomopsis sclerotioides) by mass introductions of bacterial antagonists to soil substrates. Effective antagonists were special strains of Bacillus subtilis and Streptomyces graminofaciens produced by fermentation and applied in form of high titric culture suspensions. Pre-infectional applications under useful ecological conditions reduced the degree of diseases in infested soils and enhanced the growth of the crop resulting in higher yields. Increases in disease control effects could be found by special combinations with fungicides and other phytosanitary methods. Practical use and integration of that biological control of soil borne pathogens into plant protection systems for greenhouse crops were shown. | |
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