Observation of Tylenchorhynchus ewingi in association with cotton soils in Australia

Oliver G. G. Knox; Chris M. T. Anderson; David B. Nehl; Vadakattu V. S. R. Gupta

doi:10.1071/DN06018

RESEARCH ARTICLE

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Observation of Tylenchorhynchus ewingi in association with cotton soils in Australia

Oliver G. G. Knox ^A ^B ^E , Chris M. T. Anderson ^A ^C , David B. Nehl ^A ^C and Vadakattu V. S. R. Gupta ^A ^D

+ Author Affiliations

- Author Affiliations

^A Cotton Catchment Communities Cooperative Research Centre, Locked Bag 1001, NSW 2390, Australia.

^B CSIRO Entomology, Locked Bag 59, NSW 2390, Australia.

^C NSW Department of Primary Industries, Locked Bag 1000, NSW 2390, Australia.

^D CSIRO Entomology, PMB 2, Glen Osmond, SA 5064, Australia.

^E Corresponding author. Email: oliver.knox@csiro.au

Australasian Plant Disease Notes 1(1) 47-48 https://doi.org/10.1071/DN06018
Submitted: 13 October 2006 Accepted: 21 November 2006 Published: 30 November 2006

Abstract

We report for the first time the recovery of the plant parasitic nematode Tylenchorhynchus ewingi Hooper 1959 from field soils used to grow irrigated cotton (Gossipium hirsutum) in New South Wales, Australia. The observation was made while investigating the possible existence of an association between nematodes and Verticillium wilt of cotton. No interaction was evident between nematode population sizes, species composition or the number of nematodes in cotton roots and the severity of Verticillium wilt. The samples collected over the course of the investigation contained few plant parasitic nematodes. Although the plant parasitic nematode population was small it was comprised almost entirely of the stunt nematode, Tylenchorhynchus ewingi. This is the first observation of this nematode in an Australian cotton production system.

Acknowledgements

This work was conducted under the support of CSIRO Entomology, NSW Department of Primary Industries, and through projects funded by the Cotton Research and Development Corporation and the Cotton Catchment Communities CRC.

References

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