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The Influence of Non-Ionic and Cationic Surfactants On Meloidogyne Jav Anica

The Influence of Non-Ionic and Cationic Surfactants On Meloidogyne Jav Anica THE INFLUENCE OF NON-IONIC AND CATIONIC SURFACTANTS ON MELOIDOGYNE JAV ANICA BY H. R. WALLACE Division of Horticultural Research, CSIRO, Glen Osmond, 5064, South Australia The non-ionic surfactant agral reduces the rate of hatch of eggs of M. javanica in vitro and in sand at various suctions. Greater inhibition of hatch occurs with eggs within egg sacs than with free eggs. The cationic surfactant vantoc is toxic to nematodes in vitro but in soil has no greater influence than the non-toxic agral in reducing infection. Agral also reduces the rate of reproduction of M. javanica on tomatoes in pots but is less effective than nemagon. On the other hand agral has a lower phytotoxicity than nemagon. Agral does not appear to work synergistically with nemagon when infested soil is treated with a mixture of these two compounds. It is concluded that surfactants should be tested further in field trials to determine whether they can regulate nematode numbers. Previous work (Wallace 1969b) on the effect of a non-ionic surfactant, Teric N8 or Agral (I.C.I.) on hatching, movement and infection by M. javanica sub- stantiated the hypothesis that the surface tension of water films in the soil plays an important http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Nematologica Brill

The Influence of Non-Ionic and Cationic Surfactants On Meloidogyne Jav Anica

Nematologica , Volume 15 (3): 12 – Jan 1, 1969

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Publisher
Brill
Copyright
Copyright © Koninklijke Brill NV, Leiden, The Netherlands
ISSN
0028-2596
eISSN
1875-2926
DOI
10.1163/187529269X00353
Publisher site
See Article on Publisher Site

Abstract

THE INFLUENCE OF NON-IONIC AND CATIONIC SURFACTANTS ON MELOIDOGYNE JAV ANICA BY H. R. WALLACE Division of Horticultural Research, CSIRO, Glen Osmond, 5064, South Australia The non-ionic surfactant agral reduces the rate of hatch of eggs of M. javanica in vitro and in sand at various suctions. Greater inhibition of hatch occurs with eggs within egg sacs than with free eggs. The cationic surfactant vantoc is toxic to nematodes in vitro but in soil has no greater influence than the non-toxic agral in reducing infection. Agral also reduces the rate of reproduction of M. javanica on tomatoes in pots but is less effective than nemagon. On the other hand agral has a lower phytotoxicity than nemagon. Agral does not appear to work synergistically with nemagon when infested soil is treated with a mixture of these two compounds. It is concluded that surfactants should be tested further in field trials to determine whether they can regulate nematode numbers. Previous work (Wallace 1969b) on the effect of a non-ionic surfactant, Teric N8 or Agral (I.C.I.) on hatching, movement and infection by M. javanica sub- stantiated the hypothesis that the surface tension of water films in the soil plays an important

Journal

NematologicaBrill

Published: Jan 1, 1969

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