Growth dynamics of fourwing saltbush as affected by different grazing management systems
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Authors: D. L. Price, G. B. Donart, and G. M. Southward
Date: 1989
Journal: Journal of Range Management
Volume: 42
Number: 2
Pages: 158-162
Summary of Methods: Prince et al measured the growth of fourwing saltbush (Atriplex canescens) plants under pastures with two different grazing systems (7-paddock short duration or 4-pasture rotational) to determine the appropriate management for pastures containing these shrubs. In general, growth of fourwing saltbush plants is simulated by moderate grazing, as indicated by the reduced growth rates of plants exclosed from grazing for more than one year and plants that were grazed too frequently. The rotational grazing treatment managed with a 64-day rotation period produced the most total growth, as the primary growth on plants that were rested for the first 60 days of the growing season tended to be more resistant to grazing and produce more secondary growth than primary growth that was grazed sooner. Therefore the authors concluded that growth of fourwing saltbush plants is possible in grazed pastures, when the appropriate grazing management strategy is used. Based on the results of this study, management should include at least 60 days of rest at the beginning of the growing season.
Article Summary / Main Points: None
Vegetation Types:
MLRA Ecoregions:
Agrovoc Control Words: Riparian zones Rangelands Wildlife
Article Review Type: Refereed
Article Type: Experimental Research
Keywords: fourwing saltbush, atriplex canescens, utilization, rest periods, short duration grazing, rotational grazing, exclosures, primary growth, leader growth
Annotation: Stocking rates were 13 ha/AUY in the 7-paddock short duration grazing system and 15 ha/AUY in 1981 and 22 ha/AUY in 1982 and 1983 in the 4-pasture rotational grazing system. Short duration paddock 7 treat and short duration paddock 8 treatment was stocked at 0.5 AU/ha. In the 4 pasture rotational system only 2 of the 4 pastures were used. Stock density in both pastures was 0.09 AU/ha in 1981 and 0.06 AU/ha in 1982-1983.
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