Effects of clipping frequency on tiller development of crested wheatgrass and hybrid bromegrass at vegetative and reproductive stages

Information on the tiller development of hybrid bromegrass (Bromus inermis × Bromus riparius Rehm) is limited. The objective this study was to evaluate effect clipping frequency at vegetative and reproductive stages concentrations sugars ‘AC Knowles’ compared ‘Kirk’ crested wheatgrass (Agropyron cristatum L.). This experiment conducted in greenhouse using tillers vernalized plants dug from field. experimental design a randomized complete block design. Grasses were clipped once or four times either stage. Regardless growth stage, clippings reduced number by 25.9% undefoliated control while single had no impact. impact wheatgrass, increased its average 50.4% both stages. Crested produced 16.6% more than under clipping. two grass species similar axillary buds different treatments. bud size larger bromegrass. All viable treatments for grasses. Four significantly decreased stem base glucose concentration grasses root sucrose wheatgrass. Hybrid less tolerant frequent Therefore, intensive grazing pasture may result thin stand.