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Influence of Soil Moisture, Temperature, and Compaction on the Germination and Emergence of Downy Brome (Bromus tectorum)

Published online by Cambridge University Press:  12 June 2017

D. C. Thill
Affiliation:
U.S. Dep. Agric., Sci. Ed. Admin., Agric. Res., Dep. Agron. and Soils, Washington State Univ., Pullman, WA 99164
R. D. Schirman
Affiliation:
U.S. Dep. Agric., Sci. Ed. Admin., Agric. Res., Dep. Agron. and Soils, Washington State Univ., Pullman, WA 99164
A. P. Appleby
Affiliation:
Crop Sci. Dep., Oregon State Univ., Corvallis, 97331

Abstract

The influence of soil moisture stress, temperature, and bulk density on the germination and seedling emergence of downy brome (Bromus tectorum L.) was investigated in the laboratory. Reductions in soil matric potential from -2 to -16 bars markedly reduced the percentage and rate of emergence. Seedling emergence was better at constant than at alternating temperatures. At high matric potentials, the rate of emergence was accelerated by warmer soil temperature (20 C), while at very low matric potentials, the percentage and rate of seedling emergence were least restricted at cooler temperatures (10 and 15 C). Soil matric potential did not influence the percentage or rate of emergence of seedlings grown from seed lots harvested during climatologically diverse years. Seedling emergence but not germination was inhibited by increased levels of soil compaction. Soil compaction times moisture interaction were not observed, as measured by final seedling emergence.

Type
Research Article
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

Literature Cited

1. Daubenmire, R. 1970. Steppe vegetation of Washington. Washington Agric. Exp. Stn. Bull. 62:8082.Google Scholar
2. El-Sharkawi, H. M. and Springuel, I. 1977. Germination of some crop plant seeds under reduced water potential. Seed Sci. Technol. 5:677688.Google Scholar
3. Evans, R. A. and Young, J. A. 1972. Microsite requirement for establishment of annual rangeland weeds. Weed Sci. 20:350356.CrossRefGoogle Scholar
4. Finnerty, D. W. and Klingman, D. L. 1962. Life cycles and control studies of some weed bromegrasses. Weeds 10:4047.Google Scholar
5. Hanks, R. J. and Thorp, F. C. 1956. Seedling emergence of wheat as related to soil moisture content, bulk density, oxygen diffusion rate, and crust strength. Soil Sci. Soc. Am. Proc. 20:307310.CrossRefGoogle Scholar
6. Harris, G. A. 1967. Some competitive relationships between Agropyron spicatum and Bromus tectorum . Ecol. Monogr. 37:89111.Google Scholar
7. Hinds, W. T. 1975. Energy and carbon balances in cheatgrass: An essay in autocology. Ecol. Monogr. 45:367388.Google Scholar
8. Hudspeth, E. B. and Taylor, H. M. 1961. Factors affecting seedling emergence of Blackwell switchgrass. Agron. J. 53:331335.Google Scholar
9. Hulbert, L. C. 1955. Ecological studies of Bromus tectorum and other annual bromegrasses. Ecol. Monogr. 25:181213.Google Scholar
10. Kaufmann, M. R. and Ross, K. J. 1970. Water potential, temperature and kinetin effects on seed germination in soil and solute systems. Am. J. Bot. 57:413419.CrossRefGoogle Scholar
11. Klemmedson, J. D. and Smith, J. G. 1964. Cheatgrass (Bromus tectorum L.). Bot. Rev. 30:226262.Google Scholar
12. Koller, D. 1972. Environmental control of seed germination. Pages 1101 in Kozlowski, T. T., ed. Seed Biology, Vol. 2. Academic Press, New York.Google Scholar
13. McDonough, W. T. 1975. Water potential of germinating seeds. Bot. Gaz. 136:106108.Google Scholar
14. McGinnies, W. J. 1960. Effect of moisture stress and temperatures on germination of six range grasses. Agron. J. 52:159162.Google Scholar
15. Parker, J. J. Jr. and Taylor, H. M. 1965. Soil strength and seedling emergence relations. I. Soil type, moisture tensions, temperature, and planting depth effects. Agron. J. 57:289291.Google Scholar
16. Rydrych, D. J. 1974. Competition between winter wheat and downy brome. Weed Sci. 22:211214.Google Scholar
17. Sharma, M. L. 1976. Interaction of water potential and temperature effects on germination of three semi-arid plant species. Agron. J. 68:390394.Google Scholar
18. Steinbauer, G. P. and Grigsby, B. H. 1957. Field and laboratory studies on the dormancy and germination of seeds of chess (Bromus secalinus L.) and downy bromegrass (Bromus tectorum L.). Weeds 5:14.Google Scholar
19. Stewart, G. and Hull, A. C. 1949. Cheatgrass (Bromus tectorum L.) — an ecological intruder in southern Idaho. Ecology 30:5874.Google Scholar
20. Tadmor, N. H., Cohen, Y., and Harpez, Y. 1969. Interactive effects of temperature and osmotic potential on the germination of range plants. Crop Sci. 9:771774.Google Scholar
21. Thill, D. C., Schirman, R. D., and Appleby, A. P. 1979. The osmotic stability of mannitol and polyethylene glycol 20,000 solutions used as germination media. Agron. J. 71:105108.CrossRefGoogle Scholar
22. Wicks, G. A., Burnside, O. C., and Fenster, C. R. 1971. Influence of soil type and depth of planting on downy brome seed. Weed Sci. 19:8286.Google Scholar
23. Wright, D. L., Blaser, R. E., and Woodrull, J. M. 1978. Seedling emergence as related to temperature and moisture tension. Agron. J. 70:709712.Google Scholar
24. Young, J. A. and Evans, R. A. 1975. Germinability of seed reserves in a big sagebrush community. Weed Sci. 23:358364.Google Scholar
25. Young, J. A., Evans, R. A., Gifford, R. O., and Eckert, R. E. Jr. 1968. Germination of medusahead in response to osmotic stress. Weed Sci. 16:364368.Google Scholar
26. Young, J. A., Evans, R. A., and Kay, B. L. 1971. Germination of caryopses of annual grasses in simulated litter. Agron. J. 63:551555.Google Scholar