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Interaction of Kochia (Kochia scoparia) and Rhizopus sp. on Sugarbeet (Beta vulgaris) Germination

Published online by Cambridge University Press:  12 June 2017

Ronald B. Wiley
Affiliation:
Dep. Bot. and Plant Pathol., Colorado State Univ., Fort Collins, CO 80523
Edward E. Schweizer
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Crops Res. Lab., Colorado State Univ., Fort Collins, CO 80523
Earl G. Ruppel
Affiliation:
Agric. Res. Serv., U.S. Dep. Agric., Crops Res. Lab., Colorado State Univ., Fort Collins, CO 80523

Abstract

Emergence of sugarbeets (Beta vulgaris L. ‘MonoHy D2’) from soil was reduced by germinating kochia [Kochia scoparia (L.) Schrad. ♯ KCHSC] seed at densities greater than 1 seed/cm2 when the fungus Rhizopus sp. was present. Water-soluble exudates from germinated kochia seed did not influence Rhizopus growth in vitro or sugarbeet germination. Cell-free culture extracts of Rhizopus reduced sugarbeet germination and radicle elongation. There appeared to be an interaction between kochia and Rhizopus, but the responsible compounds were not identified.

Type
Special Topics
Copyright
Copyright © 1985 by the Weed Science Society of America 

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