Switchgrass recruitment from broadcast seed vs. seed fed to cattle

W. R. Ocumpaugh, Steve Archer, J. W. Stuth

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

Fecal seeding by livestock may be an effective, low-cost means of rangeland restoration. We compared recruitment of switch-grass (Panicum virgatum L.) from seed fed to cattle and deposited in dung to that of broadcast-seeded plots receiving a comparable number of unfed seed. Although germinability of seed passed through livestock (52 to 62%) was reduced relative to that of broadcast seed (85 to 91%), recruitment of switchgrass from seed in cattle feces was equal to or superior to that of broadcast seed in terms of establishment (frequency of occurrence and density), plant growth and final plant size. The frequency of plots with emerging switchgrass plants ranged from 62 to 100% when seeds were delivered in feces, but only 2 to 40% when seeds were broadcast. After 1 year, the frequency of occurrence of switch-grass plants in fecal vs. broadcast-seeded plots was comparable for autumn trials. However, evaluations 1 year after the spring trials continue to result in higher frequency of plots with switch-grass plants from seed delivered in feces than of broadcast seedings (56 vs. 4% for May 1990, P<0.05; and 90 vs. 51% for May 1991, P≤0.01). Enhanced plant recruitment on fecal-seeded plots occurred even though broadcast-seeded plots received 1.5 to 1.7 times more pure live seed (PLS). Plants on fecal-seeded plots had a greater plant size score (based on visual ratings of height, culm density, and biomass) than plants on broadcast-seeded plots (P < 0.05 for May seedings; P < 0.05 for October 1990; P >0.10 for October 1991). Results suggest significant advantages of fecal seeding over conventional broadcast seeding in terms of seedling emergence, establishment and growth.

Original languageEnglish (US)
Pages (from-to)368-371
Number of pages4
JournalJournal of Range Management
Volume49
Issue number4
StatePublished - Jul 1996
Externally publishedYes

Fingerprint

Panicum virgatum
cattle
seed
seeds
seeding
sowing
feces
grass
grasses
livestock
seedling emergence
rangeland
rangelands
autumn
plant growth

Keywords

  • (Panicum virgatum L.)
  • plant establishment
  • revegetation/restoration
  • seed dispersal
  • seed germination
  • seed-feeding

ASJC Scopus subject areas

  • Animal Science and Zoology
  • Ecology

Cite this

Switchgrass recruitment from broadcast seed vs. seed fed to cattle. / Ocumpaugh, W. R.; Archer, Steve; Stuth, J. W.

In: Journal of Range Management, Vol. 49, No. 4, 07.1996, p. 368-371.

Research output: Contribution to journalArticle

Ocumpaugh, W. R. ; Archer, Steve ; Stuth, J. W. / Switchgrass recruitment from broadcast seed vs. seed fed to cattle. In: Journal of Range Management. 1996 ; Vol. 49, No. 4. pp. 368-371.
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abstract = "Fecal seeding by livestock may be an effective, low-cost means of rangeland restoration. We compared recruitment of switch-grass (Panicum virgatum L.) from seed fed to cattle and deposited in dung to that of broadcast-seeded plots receiving a comparable number of unfed seed. Although germinability of seed passed through livestock (52 to 62{\%}) was reduced relative to that of broadcast seed (85 to 91{\%}), recruitment of switchgrass from seed in cattle feces was equal to or superior to that of broadcast seed in terms of establishment (frequency of occurrence and density), plant growth and final plant size. The frequency of plots with emerging switchgrass plants ranged from 62 to 100{\%} when seeds were delivered in feces, but only 2 to 40{\%} when seeds were broadcast. After 1 year, the frequency of occurrence of switch-grass plants in fecal vs. broadcast-seeded plots was comparable for autumn trials. However, evaluations 1 year after the spring trials continue to result in higher frequency of plots with switch-grass plants from seed delivered in feces than of broadcast seedings (56 vs. 4{\%} for May 1990, P<0.05; and 90 vs. 51{\%} for May 1991, P≤0.01). Enhanced plant recruitment on fecal-seeded plots occurred even though broadcast-seeded plots received 1.5 to 1.7 times more pure live seed (PLS). Plants on fecal-seeded plots had a greater plant size score (based on visual ratings of height, culm density, and biomass) than plants on broadcast-seeded plots (P < 0.05 for May seedings; P < 0.05 for October 1990; P >0.10 for October 1991). Results suggest significant advantages of fecal seeding over conventional broadcast seeding in terms of seedling emergence, establishment and growth.",
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