REINFESTATION OF STERILIZED NURSERY SEEDBEDS BY FUNGI
- 1 July 1967
- journal article
- research article
- Published by Canadian Science Publishing in Canadian Journal of Microbiology
- Vol. 13 (7) , 771-776
- https://doi.org/10.1139/m67-102
Abstract
Incidences of soil fungi were recorded for 1 cm3 volumes of untreated and fumigated nursery soils using new selective isolation media. In July, 10 months after application of Trizone at 1 lb/100 ft2, there were many viable Pythium propagules in the treated surface soil (11/cm3) but significantly fewer than in nonfumigated soil (29/cm3). Studies with baits showed that Rhizoctonia and Fusarium spp. were also present in both soils. The total number of fungi in fumigated soil (11,000) was lower than in nonfumigated soil (30,000). Trichoderma propagules were very common and significantly more so in fumigated (1,120) than in nonfumigated (270) soil. The same held for bacteria (10 million vs. 7 million). Reinfestation with four potentially pathogenic genera of fungi was found to take place by means of splashing rain and irrigation water, dust, and soil carried by man.This publication has 4 references indexed in Scilit:
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- The effects of soil fumigation, sucrose application, and inoculation of sugar fungi on the growth of forest-tree seedlingsPlant and Soil, 1964
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