NDLI: Capsules containing entomopathogenic nematodes as a Trojan horse approach to control the western corn rootworm

Content Provider	Springer Nature Link
Author	Hiltpold, Ivan Hibbard, Bruce E. French, B. Wade Turlings, Ted C. J.
Copyright Year	2012
Abstract	The use of entomopathogenic nematodes in the biological control of soil insect pests is hampered by the costly and inadequate application techniques. As a possible solution we evaluated a nematode encapsulation approach that offers effective application and may possibly attract the pest by adding attractants to the capsule shell. Heterorhabditis bacteriophora nematodes, which show high virulence against the maize root pest Diabrotica virgifera virgifera, were encapsulated in a polysaccharide shell derived from the algae Laminaria ssp. Shells of varying thickness and composition were evaluated.Nematodes readily survived the encapsulation process and were able, varying with shell thickness and temperature, to break through the shell and subsequently infect hosts. The added attractants and feeding stimulants to the shell attracted the pest larvae as much as maize roots. In field trials, encapsulated H. bacteriophora nematodes were more effective in controlling D. v. virgifera than those sprayed in water over the soil surface, but in these trials the addition of stimulants did not increase the control efficiency.The study demonstrates that nematodes can be successfully applied in capsules in the field. Further improvements are needed to make the capsules a cost effective alternative to conventional field application of nematodes.
Starting Page	11
Ending Page	25
Page Count	15
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	358
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Springer Netherlands
Publisher Date	2012-05-05
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Entomopathogenic nematodes Heterorhabditis bacteriophora Heterorabditidae Western corn rootworm Diabrotica virgifera virgifera Chrysomelidae Application technique Biological control Belowground pest management Plant protection Plant Physiology Soil Science & Conservation Ecology Plant Sciences
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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