The effect of eight fungicides on germination of Conidiobolus obscurus resting spores |
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Authors: | D.F. Perry J.P. LatgÉ |
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Affiliation: | Service de Lutte Biologique Contre Les Insectes, Institut Pasteur, 25 rue Dr. Roux, Paris 15, France |
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Abstract: | Conidiobolus obscurus resting spore germination was greater than 60% after 21 days incubation in 700 ppm concentrations of Rhodiasoufre, Pelt 44, Dithane M-45, Plantvax, and Saprol. No germ tubes were produced under the same treatment with Bavistine, Quin 20, or Benlate at the same dosage. Germination in distilled water was 85%. After only 24 hr contact with Quin 20 (700 ppm) followed by a distilled water wash, germination was not reduced. A higher ability to penetrate the spore wall may account for greater fungicide activity. Resting spores were found to be more resistant to certain fungicides than conidia; however, no general rule could be applied. |
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Keywords: | fungal insect pathogen aphids resting spore germination fungicide |
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