Abstract
Cattlemen's Day 2022, Beef Cattle Research
Highlights
Introduced to the southern Great Plains for livestock forage and soil conservation, old-world bluestems (Bothriochloa ischaemum and Bothriochloa bladhii) have spread beyond cultivation and threaten prairie biodiversity and pastoral production systems in Kansas
Pre-fire total grass cover did not differ between treatments (P = 0.47; Table 2); subsequently, burned plots were associated with lesser total grass cover than non-burned plots
Basal cover of Caucasian bluestem decreased by approximately 48% and 52%, respectively, in burned plots compared with non-burned plots
Summary
Introduced to the southern Great Plains for livestock forage and soil conservation, old-world bluestems (Bothriochloa ischaemum and Bothriochloa bladhii) have spread beyond cultivation and threaten prairie biodiversity and pastoral production systems in Kansas. While prescribed fire has been traditionally applied in the spring to control undesirable plant species, old-world bluestems are unaffected by burning in the dormant season. Recent research suggested that prescribed burning late in the summer may result in significant control of yellow bluestem. With similar morphology and phenology, Caucasian bluestem may respond to late summer fire. The objective of our experiment was to document the effects of late-summer prescribed fire on soil cover, botanical composition, plant-species richness, and forage production in mixedgrass prairie with established Caucasian bluestem stands over a four-year period
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