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Influence of nitrogen and sewage sludge on botanical composition of an old hay field †
Author(s) -
MAGDOFF F. R.,
AMADON J. F.,
WOOD G. M.
Publication year - 1980
Publication title -
grass and forage science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.716
H-Index - 56
eISSN - 1365-2494
pISSN - 0142-5242
DOI - 10.1111/j.1365-2494.1980.tb01518.x
Subject(s) - trifolium repens , phleum , red clover , hay , agronomy , poa pratensis , sewage sludge , repens , biology , growing season , agropyron , grazing , zoology , sewage , poaceae , environmental science , environmental engineering
Applications of either sewage sludge or N as ammonium nitrate were made to a 15‐year‐old hayfield over a 2‐year period. The original seeding mixture was unknown but was believed to be timothy ( Phleum pratense L.) and red clover ( Trifolium pratense L.). During the second year, botanical separations indicated that applications of both N and sewage sludge resulted in reduced proportions of red and volunteer white clover ( Trifolium repens L.) as well as volunteer Kentucky bluegrass (Poa pratensis L.). During the growing season a decline in proportion of timothy ( Phleum pratense L.) was observed for the control as well as for the N and sludge treatments. In contrast, quackgrass ( Agropyron repens (L.) Beauv.) was markedly stimulated by the treatments and the proportion of it in the hay increased during the growing season.