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MICROBIAL FERMENTATION OF GRASS RESIDUES TO ORGANIC ACIDS AS A FACTOR IN THE ESTABLISHMENT OF NEW GRASS SWARDS
Author(s) -
GUSSIN E. J.,
LYNCH J. M.
Publication year - 1981
Publication title -
new phytologist
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.742
H-Index - 244
eISSN - 1469-8137
pISSN - 0028-646X
DOI - 10.1111/j.1469-8137.1981.tb02326.x
Subject(s) - poa pratensis , agrostis stolonifera , festuca rubra , festuca , agrostis , shoot , pasture , phytotoxicity , agronomy , biology , festuca pratensis , bromus inermis , poaceae , botany , phleum , lolium perenne
S ummary Extracts from anaerobically decomposed shoots of a range of grass species were toxic to other grasses and clover. This phytotoxicity was less after 20 days than after 10 and seemed to be caused by organic acids. The residues produced by Festuca rubra, Alopecurus pratensis and Agrostis stolonifera were the most toxic. After aerobic decomposition for 10 days extracts from these three species were phytotoxic, but after a further 10 days decomposition they caused a stimulation in grass and clover root growth. These results are discussed in relation to the poor establishment that sometimes follows reseeding old pasture land.