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Agronomy 2014, 4(1), 90-107; doi:10.3390/agronomy4010090
Article

Yield Response of Native Warm-Season Forage Grasses to Harvest Intervals and Durations in Mixed Stands

1,* , 2
 and 2
Received: 20 December 2013; in revised form: 25 January 2014 / Accepted: 4 February 2014 / Published: 17 February 2014
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Abstract: Tolerance 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.
Keywords: Native grass; warm-season; harvest; forage; yield; bluestem; defoliation; recovery Native grass; warm-season; harvest; forage; yield; bluestem; defoliation; recovery
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

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.

AMA Style

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.

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