Harvest frequency and burning effects on mono-cultures of 3 warm-season grasses
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Authors: G. J. Cuomo, B. E. Anderson, L. J. Young, and W. W. Wilhelm
Date: 1996
Journal: Journal of Range Management
Volume: 49
Number: 2
Pages: 157 - 162
Summary of Methods: Harvest frequency and interaction with burn date affected growing season yield of 3 tallgrass prairie species in Nebraska. Switchgrass (Panicum virgatum) was the most tolerant, increasing or unchanged under all harvest frequencies, while big bluestem (Andropogon gerardii) declined for all harvest frequencies, and Indiangrass (Sorghastrum nutans) declined only at a frequency of 3 harvests. Yields were reduced by harvest in unburned or burned in March plots compared to multiple harvests on plots burned after spring plant growth began in April. Significant species x harvest interactions were detected for summer growth and total annual yield, but generally treatments did not increase total annual yield, actually reducing it in subsequent years.
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: switchgrass, panicum virgatum, big bluestem, andropogon gerardii, indiangrass, sorghastrum nutans, yield, soil moisture
Annotation: Treatments were applied with burning in March, April, and May plus an unburned control. Growing season yield was measured by harvesting 1 (June), 2 (June and July), or 3 (June, July, and August) times with unharvested control pots included.,In October, an end-of season harvest was taken by clipping a 30 x 180 cm area to a height of 18 cm from non-harvested sub-sub-plots in 1989, and from all sub-plots in 1990.
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