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Occurrence of Spongospora subterranea in an area of improved pasture at Barrington Tops, New South Wales

Occurrence of Spongospora subterranea in an area of improved pasture at Barrington Tops, New... Potatoes, cv. Sebago, grown for the first time in a small paddock at Barrington Tops following improved pasture, were severely infected with Spongospora subterranea. No evidence for infection of the seed tubers used to plant this area was found. Bioassays for S. subterranea on 75 soil samples collected from forest and native pasture areas around the paddock were negative, except for one sample from a depression where water from the infested area would drain. Similar bioassays on 20 soil samples collected from areas of native pasture within the paddock were also negative while bioassays on 20 soil samples from undisturbed improved pasture within the paddock gave a mean infection level of 3.30 powdery scab lesions per tuber. Infection levels in bioassays on ten soil samples from the area planted with potatoes were lower at 0.54 powdery scab lesions per tuber. It is most likely that the fungus was introduced with pasture seed. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Australasian Plant Pathology Springer Journals

Occurrence of Spongospora subterranea in an area of improved pasture at Barrington Tops, New South Wales

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References (3)

Publisher
Springer Journals
Copyright
Copyright
Subject
Life Sciences; Plant Pathology; Plant Sciences; Agriculture; Entomology; Ecology
ISSN
0815-3191
eISSN
1448-6032
DOI
10.1071/APP9890017
Publisher site
See Article on Publisher Site

Abstract

Potatoes, cv. Sebago, grown for the first time in a small paddock at Barrington Tops following improved pasture, were severely infected with Spongospora subterranea. No evidence for infection of the seed tubers used to plant this area was found. Bioassays for S. subterranea on 75 soil samples collected from forest and native pasture areas around the paddock were negative, except for one sample from a depression where water from the infested area would drain. Similar bioassays on 20 soil samples collected from areas of native pasture within the paddock were also negative while bioassays on 20 soil samples from undisturbed improved pasture within the paddock gave a mean infection level of 3.30 powdery scab lesions per tuber. Infection levels in bioassays on ten soil samples from the area planted with potatoes were lower at 0.54 powdery scab lesions per tuber. It is most likely that the fungus was introduced with pasture seed.

Journal

Australasian Plant PathologySpringer Journals

Published: Jan 25, 2011

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