Individuals are predicted to maximize lifetime reproductive success (LRS) through selective use of resources; however, a wide range of ecological and social processes may prevent individuals from always using the highest-quality resources available. Resource selection functions (RSFs) estimate the relative amount of time an individual spends using a resource as a function of the proportional av...

ABSTRACT Dead spot (Ophiosphaerella agrostis) is a damaging disease of young </=6 years old) creeping bentgrass (Agrostis stolonifera) golf greens. The objectives of this 3-year field study were to determine the peak periods of dead spot activity based on increasing patch diameter and pseudothecia development, and to determine where O. agrostis overwinters. Patch diameter generally increased at...

Dead spot is a new disease of young creeping bentgrass (Agrostis stolonifera L.) putting greens in the United States. The disease is incited by Ophiosphaerella agrostis Dernoeden, M.P.S. Câmara, N.R. O’Neill, van Berkum, et M.E. Palm, a previously undescribed pathogen that first was isolated in 1998 from a golf course in Maryland (1,3). In the same year, the disease was confirmed on creeping be...

The infective dauer juvenile (DJ2) of Anguina agrostis, a stage capable of surviving desiccation, is up to sixfold more resistant to the detergent sodium dodecyl sulfate than are freshly hatched juveniles or adult males, and twofold more resistant to the anesthetic phenoxypropanol. Thus, the DJ2, like dauer stages of other species, may also be more resistant to various types of environmental st...

Creeping bentgrass (Agrostis stolonifera L.) is an important species to the turfgrass industry because of its adaptation for use in high quality turf stands such as golf course putting greens, tees, and fairways. Creeping bentgrass is a highly outcrossing allotetraploid, making genetic marker development dif!cult. Genetic markers anchored to miniature inverted-repeat transposable elements (MITE...

ABSTRACT Ophiosphaerella agrostis, the causal agent of dead spot of creeping bentgrass (Agrostis stolonifera), can produce prodigious numbers of pseudothecia and ascospores throughout the summer. The environmental conditions and seasonal timings associated with O. agrostis ascospore release are unknown. The objectives of this research were to (i) determine the influence of light and relative hu...

Genetically modified Agrostis stolonifera has escaped from cultivation. For the first time, a herbicide-resistant perennial weed has established itself in wild populations.

1. Comparisons were made between castrated male Scottish Blackface sheep and red deer (Cervus elaphus) of voluntary forage intake (VFI), digestibility and the mean retention time (MRT) of a particulate-phase marker (103Ru-phenanthroline) in the alimentary tract, when a range of forages: dried-grass pellets, chopped dried grass, fresh-frozen Agrostis-Festuca spp. and heather (Calluna vulgaris, L...