Intensive cattle grazing of oxeye daisy (Chrysanthemum leucanthemum)
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Authors: B. E. Olson, R. T. Wallander, and P. K. Fay
Date: 1997
Journal: Weed Technology
Volume: 11
Number: 1
Pages: 176-181
Summary of Methods: The effects of intensive cattle grazing on oxeye daisy (Chrysanthemum leucanthemum) were examined in a two year study northeast of Bozeman, Montana. The first year of grazing was on six, 12-ha paddocks. During the second year of grazing there were only three 24-ha paddocks. Paired 10-m transects were permanently located in the high oxeye daisy density with half of these transects excluded from grazing. Oxeye daisy stems were counted and assigned to seedling, rosette or mature stem categories. Timothy, smooth brome and dandelion were counted with frequency taken on Kentucky bluegrass and orachardgrass. Mature oxeye daisy stems and grass plants were permanently marked and visited after 2, 4, and 6 days of grazing to determine if they were grazed, trampled, or removed and height of each was remeasured. Soil cores on each site were collected before grazing began and after the conclusion of the trial to determine the seedbank of oxeye daisy.
Article Summary / Main Points: • Density of oxeye daisy seedlings and rosettes decreased with grazing, but the mature plants were not affected. • After two years of grazing the number of oxeye daisy seeds in the soil seedbank was decreased on grazed sites over the two year period and was lower than ungrazed sites. • Grasses (timothy, smooth brome and Kentucky bluegrass) were grazed more readily than oxeye daisy stems, but were not affected by the intensive grazing treatments in this short-term grazing study.
Vegetation Types: Intermountain Grasslands (includes Palouse Prairie and Canyon Grasslands)
MLRA Ecoregions: 44B Central Rocky Mountain Valleys
Agrovoc Control Words: Weeds Rangelands Grazing
Article Review Type: Refereed
Article Type: Experimental Research
Keywords: seedbank, utilization, weed spread, weed seedlings, density, grazing system, timothy, phleum pratense, smooth brome, bromus inermis, kentucky bluegrass, poa pratensis l., targeted grazing
Annotation: Stocking rates in this study were 0.6 AUM/ac. Utilization of oxeye daisy was 50-80%. Intensive cattle grazing had a more significant impact on oxeye daisy density than continuous grazing, though sheep are an overall better option as they impact oxeye daisy densities under both grazing systems.
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