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Interaction of Insects, Fungi, and Burial on Velvetleaf (Abutilon theophrasti) Seed Viability

Published online by Cambridge University Press:  12 June 2017

Robert J. Kremer  and
Neal R. Spencer
Robert J. Kremer
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., Crop Prod. Res. Unit, Univ. Mo., Columbia, MO 65211
Neal R. Spencer
Affiliation:
U.S. Dep. Agric., Agric. Res. Serv., North. Plains Res. Lab., Sidney, MT 59270
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Abstract

A scentless plant bug feeds on velvetleaf seeds. Fungi, dominated by the genera Fusarium and Alternaria, were isolated from insect-attacked seeds at levels related to insect density on the plants. The combined effects of insect feeding and fungal infection decreased seed germination. Burial of insect-attacked seeds in soil for 24 months reduced seed survival and increased Fusarium infection. Decreases in velvetleaf seed viability and survival in soil caused by a seed-feeding insect and associated seed fungi suggests that subsequent infestations by velvetleaf can be decreased through integrated use of the two biological control agents.

Keywords

Scentless plant bug, Niesthrea louisianica Sailervelvetleaf, Abutilon theophrasti Medik. #3 ABUTHBiocontrolseedborne microorganismsburied seedseed longevityABUTH
Type
Research
Information
Weed Technology , Volume 3 , Issue 2 , June 1989 , pp. 322 - 328
Copyright
Copyright © 1989 by the Weed Science Society of America 

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References

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