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A survey of nematodes associated with pyrethrum in Tasmania, Australia, and the susceptibility of pyrethrum cultivars to root-lesion nematode

Citation

Hay, FS and Stirling, GR and Pethybridge, SJ and Chung, B, A survey of nematodes associated with pyrethrum in Tasmania, Australia, and the susceptibility of pyrethrum cultivars to root-lesion nematode, Australasian Plant Pathology, 38, (1) pp. 1-5. ISSN 0815-3191 (2009) [Refereed Article]

DOI: doi:10.1071/AP08068

Abstract

In a survey of fields in northern Tasmania, Australia, with various cropping histories, root-lesion nematode (Pratylenchus spp.) was detected in soil from all 99 fields sampled before planting pyrethrum. Population densities were generally low, but seven fields had more than 600 Pratylenchus/200mL soil, with the maximum density being 3930/200mLsoil. Root-knot nematode (Meloidogyne spp.) was detected in 20 fields, with only three having population densities greater than 50/200mL soil. Pratylenchus spp. from a subset of 31 fields were identified to species level, with Pratylenchus crenatus, P. penetrans, P. neglectus and P. thornei occurring in 27, 10, 2 and 3 fields, respectively. In pyrethrum crops aged 12 years, root-lesion nematode was recovered from all 70 fields sampled, with 18 fields having more than 300/200mL soil. The highest population density was 960/200mL soil. Eighteen fields had more than 200/g fresh weight of root with a maximum of 786/g fresh weight of root. P. crenatus and P. penetrans were extracted from roots of pyrethrum transplants grown for ∼3 months in field soil from 8 and 4 of 10 fields, respectively, indicating that pyrethrum was a host of these species. In two pot experiments conducted in the glasshouse, with four commercial pyrethrum cultivars, P. penetrans multiplication rates (the ratio of final to initial nematode population densities) ranged from 2.7 to 7.9 and 2.2 to 6.6. © 2009 Australasian Plant Pathology Society.

Item Details

Item Type:Refereed Article
Research Division:Biological Sciences
Research Group:Plant Biology
Research Field:Plant Pathology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Horticultural Crops
Objective Field:Horticultural Crops not elsewhere classified
UTAS Author:Hay, FS (Dr Frank Hay)
UTAS Author:Pethybridge, SJ (Dr Sarah Pethybridge)
ID Code:52277
Year Published:2009
Web of Science® Times Cited:1
Deposited By:Agricultural Science
Deposited On:2008-06-15
Last Modified:2012-03-05
Downloads:0

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