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Effect of the nematophagous fungi Hirsutella rhossiliensis and Verticillium balanoides on stem nematode (Ditylenchus dipsaci) in white clover

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Abstract

The potential of the nematophagous fungi Hirsutella rhossiliensis and Verticillium balanoides to control Ditylenchus dipsaci in white clover (Trifolium repens) was assessed in two factorial pot experiments in pasteurised soil. In experiment one, the mean dry weight of plants per pot was significantly reduced by D. dipsaci. Fungal treatment also significantly affected plant dry weight with the treatment with V. balanoides giving a higher plant weight than that in the control or the treatment with H. rhossiliensis. Numbers of D. dipsaci extracted from the foliage in each pot were significantly lower in the treatment with D. dipsaci and V. balanoides compared to those in the treatment with D. dipsaci alone or with D. dipsaci and H. rhossiliensis. In experiment two, the main effects of nematodes or fungal treatment did not significantly affect mean dry weight of plants per pot. However, nematode numbers in the foliage in the treatment with D. dipsaci and V. balanoides were significantly lower than those in the treatment with D. dipsaci. V. balanoides may be suitable for development as a biological control agent for foliar-feeding, plant-parasitic nematodes such as D. dipsaci.

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Authors and Affiliations

  1. AgResearch Grasslands Research Centre, Private Bag 11008, Palmerston North, New Zealand

    F. S. Hay & L. Bateson

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  1. F. S. Hay
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  2. L. Bateson
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Hay, F.S., Bateson, L. Effect of the nematophagous fungi Hirsutella rhossiliensis and Verticillium balanoides on stem nematode (Ditylenchus dipsaci) in white clover. Australasian Plant Pathology 26, 142–147 (1997). https://doi.org/10.1071/AP97024

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  • DOI: https://doi.org/10.1071/AP97024

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