Premium
Fate of glyphosate in Agropyron repens (L.) Beauv. growing under low temperature conditions
Author(s) -
DEVINE M. D.,
BANDEEN J. D.
Publication year - 1983
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.1365-3180.1983.tb00523.x
Subject(s) - rhizome , glyphosate , agropyron , repens , shoot , biology , chromosomal translocation , agronomy , horticulture , weed , botany , biochemistry , gene
Summary Absorption, translocation and distribution of 14 C‐glyphosate were examined in Agropyron repens (L.) Beauv. plants growing under field conditions in the autumn. Glyphosate absorption did not increase beyond 3 days after application, whereas translocation to the rhizomes continued up to 7 days after application. The translocated glyphosate accumulated more in new rhizomes than in older parts of the rhizomes. Ten per cent of the glyphosate translocated out of the treated shoot was recovered in younger shoots 7 days after application. Plants harvested the following spring contained less than 20% of the glyphosate originally applied. Although a growth cabinet experiment indicated that 34% of the glyphosate in the rhizomes of treated plants could be remobi‐lized into new aerial shoots, considerably less was recovered in new, aerial shoots in the spring in the field‐grown plants. Freezing experiments showed that glyphosate translocation to the rhizomes was only prevented when cold treatment caused visible damage to A. repens foliage.