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The effect of herbicides on respiration and transformation of nitrogen in two soils I. Metribuzin and glyphosate
Author(s) -
MARSH J. A. P.,
DAVIES H. A.,
GROSSBARD E.
Publication year - 1977
Publication title -
weed research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.693
H-Index - 74
eISSN - 1365-3180
pISSN - 0043-1737
DOI - 10.1111/j.1365-3180.1977.tb00448.x
Subject(s) - metribuzin , glyphosate , chemistry , trifluralin , nitrification , soil water , mineralization (soil science) , nitrogen , agronomy , environmental chemistry , nitrogen cycle , carbon dioxide , pesticide , environmental science , soil science , biology , weed control , organic chemistry
Summary: The effects of metribuzin and glyphosate at 100 ppm on carbon dioxide evolution and nitrogen transformation in two soils have been investigated in the laboratory. Both herbicides reduced CO2 evolution from Boddington Barn soil (organic carbon content 1.5%, pH 6.6) at some dates, but neither gave any consistent effects on Triangle soil (organic carbon content 4.0%, pH 5.1). Both metribuzin and glyphosate stimulated mineralization of nitrogen for at least 9 weeks. Only metribuzin on Triangle soil gave any indication of inhibition of nitrification. Metribuzin degraded more rapidly in Triangle soil than in Boddington Barn.