Upload
lenora
View
22
Download
0
Tags:
Embed Size (px)
DESCRIPTION
Limitations to post-fire seedling establishment. Jeremy James and Tony Svejcar. Background. Seeding following fire is critical tool for soil stabilization and preventing weed spread Tens of millions of dollars are spent on seeding each year - PowerPoint PPT Presentation
Citation preview
Limitations to post-fire seedling establishment
Jeremy James and Tony Svejcar
• Seeding following fire is critical tool for soil stabilization and preventing weed spread
• Tens of millions of dollars are spent on seeding each year
• Seed success rates are extremely low on arid rangeland
• Reasons for low success rates are poorly understood
Background
• Following four fires, plots were seeded with a rangeland drill or by hand, and
• Some plots also were weeded and watered
Project outline
Four fire complexes in southeastern Oregon
Egley
Bartlett Roundtop
Butte
Native grasses and forbs recovered following all four fires
Establishment was 3-fold higher in plots where seeds were planted by hand
Weeding or watering plots did not increase establishment
0
3
6
9
12
Seed
ling
dens
ity (
plan
ts /
10 ft
2 )
• Need techniques to determine if post-fire reseeding is really necessary
• We cannot assume more precipitation or fewer weeds will improve reseeding success
• Seeding technology remains a major limitation to our ability to restore rangeland
Conclusion
• This project is part of a larger effort by ARS Burns, OR to improve seedling establishment in rangeland restoration efforts
Project information
For more information contactJeremy James
541-573-8911 (jeremy.james @oregonstate.edu)Tony Svejcar
541-573-8901 (tony.svejcar@ oregonstate.edu)