Skip to Main Content
Optimal seeding depth of five forb species from the Great BasinAuthor(s): Jennifer K. Rawlins; Val J. Anderson; Robert Johnson; Thomas Krebs
Source: Native Plants Journal. 10(1): 33-42.
Publication Series: Miscellaneous Publication
PDF: View PDF (866.54 KB)
DescriptionUse of forbs in revegetation projects in the Great Basin is limited due to high seed cost and insufficient understanding of their germination and establishment requirements. We tested the effects of seeding depth from 0 to 25.4 mm (1 in) on emergence and survival in clay and sandy loam soils of 5 ecologically important forbs. Significantly less emergence occurred of gooseberry-leaf globemallow (Sphaeralcea grossulariifolia (Hook. &. Arn.) Rydb. [Malvaceae]) without a 3.2 mm covering of soil in both soil textures (14% and 19% reductions, respectively). Mountain dandelion (Agoseris glauco (Pursh) Rat [Asteraceae]), Utah milkvetch (Astragalus utahensis (Torr.) Torr. &. A. Gray [Fabaceae)], and tapertip hawksbeard (Crepis acuminata Nutt. [Asteraceae]) had greatest emergence on the soil surface and decreased at greater depths. Scarlet globemallow (Sphaeralcea coccinea (Nutt.) Rydb. [Malvaceae]) and S. grossulariifolia had significantly greater survival in the sand loam (71% and 87%) than in the clay soil (32% and 52%). Survival of A. utahensis and C. acuminata decreased significantly with surface seeding in the sandy loam soil. Seeding depth did not significantly impact survival of A. glauca. Seeding at 25.4 mm (1 in) reduced emergence or survival for all species. Maximum emergence and survival occurred at shallower seeding depths in the clay loam for most species. Based on our results for these forbs, we recommend a seeding depth of 3.2 mm (0.1 3 in) in clay soil and 6.4 mm (0.26 in) for sandy loam soil.
- You may send email to firstname.lastname@example.org to request a hard copy of this publication.
- (Please specify exactly which publication you are requesting and your mailing address.)
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationRawlins, Jennifer K.; Anderson, Val J.; Johnson, Robert; Krebs, Thomas. 2009. Optimal seeding depth of five forb species from the Great Basin. Native Plants Journal. 10(1): 33-42.
Keywordsnative forbs, seeding depth, emergence, survival, Asteraceae, Fabaceae, Malvaceae, Sphaeralcea
- Seed-feeding insects impacting globemallow seed production
- Morphological and genetic variation among four high desert Sphaeralcea species
- Restoration potentials and challenges for Sphaeralcea munroana
XML: View XML