Yield Response of Native Warm-Season Forage Grasses to Harvest Intervals and Durations in Mixed Stands
AbstractTolerance to frequent defoliations is critical for native warm-season grasses managed for forage and wildlife habitat. Yield response of big bluestem (Andropogon gerardii), indiangrass (Sorghastrum nutans), and little bluestem (Schizachyrium scoparium) to treatments (30-, 40-, 60-, 90- or 120-d harvest intervals) and durations were assessed on early-succession mixed stands. Over three years, phased harvestings were initiated in May, on sets of randomized plots, in five replications to produce one-, two-, and three-year old stands, by the third year. Each plot had marked indiangrass and big bluestem plants which were hand-clipped on harvest-days before whole-plot harvesting. Species yields were greater in first- than second-year plots but not affected by treatments. June–September yields in 2008 were greatest for the 30-d, and more in the first- (8472 kg ha−1) than second-year (7627 kg ha−1) plots. In 2009, yields were also greater in first- than second-year plots but without treatment effects. Recovery yields showed no treatment effect, but were about 67% less for second- compared to first-year plots and much less than plots never harvested before. Data suggest that harvesting similar mixed native warm-season grass stands at 30- to 40-d intervals may provide good hay yields without compromising post-season stand recovery for multiple uses.
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Temu, V.W.; Rude, B.J.; Baldwin, B.S. Yield Response of Native Warm-Season Forage Grasses to Harvest Intervals and Durations in Mixed Stands. Agronomy 2014, 4, 90-107.
Temu VW, Rude BJ, Baldwin BS. Yield Response of Native Warm-Season Forage Grasses to Harvest Intervals and Durations in Mixed Stands. Agronomy. 2014; 4(1):90-107.Chicago/Turabian Style
Temu, Vitalis W.; Rude, Brian J.; Baldwin, Brian S. 2014. "Yield Response of Native Warm-Season Forage Grasses to Harvest Intervals and Durations in Mixed Stands." Agronomy 4, no. 1: 90-107.