Inhibition of nitrite oxidizers by roots of grass.

Published online
28 Aug 1967
Content type
Journal article
Journal title
Journal of Applied Ecology

Munro, P. E.

Publication language


A heat-labile substance in surface sterilized pieces of Hyparrhenia filipendula roots was toxic to nitrite oxidizers in a soil enrichment culture; it occurred all the year in the outer root tissues and in summer in the stele. Its action was bactericidal. It was probably water-soluble. There was no proof that the inhibitor was excreted by the grass roots in vivo or that it was responsible for the low concentration of mineral N in soil under grass.

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