allelopathic aglycons in quackgrass (Agropyron repens).
Allelopathic effects of living quackgrass (Agropyron repens L.):
Biomass from fertilized plots dominated by Agropyron repens
and Poa pratensis had significantly higher mean tissue-N content than the mixture of Schizachyrium scoparium, P.
Quackgrass (Agropyron repens
) control with fall-applied glyphosate and Other herbicides.
The experimental site was located within a midsuccessional old field (20-30 yr postagricultural abandonment) that was dominated by introduced perennial grasses: Bromus inermis, Agropyron repens
, and Phleum pratense.
Examination of changes in cover through time suggest that three key species might explain the trends in responses of monocots and dicots: Agropyron repens
, Taraxacum officinale, and Plantago major.
(L.) P.B.] on Dutch agricultural soils.
Multiple regression tested for the dependence of [CV.sub.84-94] on [SR.sub.84-94] when simultaneously controlling for the 1984 through 1994 averages, for each plot, of community biomass, biomass of Agropyron repens
, of Andropogon gerardi, of Schizachyrium scoparium, of Poa pratensis, of [C.sub.3] grasses, of [C.sub.4] grasses, of legumes, of other forbs, and of woody species.
Forage yield, phenological development, and forage quality of an Agropyron repens
Early-season Agropyron repens
and Rudbeckia hirta and mid-flowering Erigeron annuus were shorter (generally [is less than or equal to] 1 m tall) than early-flowering Phalaris arundinacea (1.5-2.0 m).
Agropyron frequency is the number of plots on which Agropyron repens
was recorded in 1982.
is a native bunchgrass common in early successional grasslands, while Agropyron repens
Schizachyrium scoparium 35.0 0.2 11.2 0.1 Poa pratensis 9.6 0.2 26.5 0.0 Agropyron repens
0.0 5.5 32.5 5.1 Lespedeza capitata 0.2 1.1 0.0 0.0 Ambrosia artemisiifolia 0.0 1.2 0.0 1.9 Chenopodium album 0.1 10.3 4.0 43.6 Panicum capillare 0.0 6.9 0.2 6.4 Setaria viridis 0.2 11.2 0.4 9.0 Means contrasts showed which species responded differently to competition at low and high nitrogen.