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Effects of Soil Moisture on the Vegetative Growth of Wild Oat (Avena fatua)

Published online by Cambridge University Press:  12 June 2017

William C. Akey  and
Ian N. Morrison
William C. Akey
Affiliation:
Univ. of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
Ian N. Morrison
Affiliation:
Univ. of Manitoba, Winnipeg, Manitoba, Canada R3T 2N2
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Abstract

The growth of wild oat (Avena fatua L. ♯3 AVEFA) under different moisture regimes was investigated under field conditions and in a growth chamber. In the field, growth of wild oat under low moisture conditions (0.6 cm water per week – Regime 1) was significantly reduced compared to growth under high moisture conditions (2.5 cm water per week – Regime 2). Maximum reductions of 49, 33, and 38% were recorded in the leaf area, dry weight, and number of viable tillers, respectively. The growth of wild oat in soil watered daily to a soil moisture content (SMC) of 10% (water potential −6.5 bars) in the growth chamber was less than for plants in soil watered daily to 20% SMC (-0.3 bars). Maximum reductions of 55, 57, and 38% were recorded in the leaf area, dry weight, and number of viable tillers, respectively. Wild oat growth was more adversely affected by reducing the SMC from 20 to 10% after, rather than before, the four-leaf stage. By the last sampling date, stomatal diffusion resistance of the most severely water-stressed plants was 25 s·cm-1 compared to between 5 and 10 s·cm-1 for the plants receiving more water.

Keywords

Water stressstomatal diffusion resistanceAVEFA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 32 , Issue 5 , September 1984 , pp. 625 - 630
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

Literature Cited

1. Aspinall, D., Nicholls, P. B., and May, L. H. 1964. The effects of soil moisture stress on the growth of barley. I. Vegetative development and grain yield. Aust. J. Agric. Res. 15:729–745.Google Scholar
2. Boyer, J. S. 1970. Leaf enlargement and metabolic rates in corn, soybean, and sunflower at various leaf water potentials. Plant Physiol. 46:233–235.CrossRefGoogle ScholarPubMed
3. Chinoy, J. J. 1961. Physiology of drought resistance in wheat. II. Evaluation of drought resistance in eight varieties of wheat on the basis of growth analysis. Phyton (Buenos Aires) 16:131–139.Google Scholar
4. Dunlop, S. and Shaykewich, C. F. 1982. Southern Manitoba's climate and agriculture. Manit. Agric. 52 pp.Google Scholar
5. El-Sharkawy, M. A. and Hesketh, J. D. 1964. Effects of temperature and water deficit on leaf photosynthetic rates of different species. Crop Sci. 4:514–518.CrossRefGoogle Scholar
6. Hsiao, T. C. 1973. Plant responses to water stress. Ann. Rev. Plant Physiol. 24:519–570.Google Scholar
7. Hsiao, T. C. and Acevedo, E. 1974. Plant responses to water deficits, water use efficiency, and drought resistance. Agric. Meterol. 14:59–84.Google Scholar
8. Joffe, A. and Small, J. G. C. 1964. The effect of periods of water stress on growth and tillering of wheat and oats under controlled conditions. Phyton (Buenos Aires) 21:69–76.Google Scholar
9. Jones, D. P. 1976. Wild oats in world agriculture. Agric. Res. Counc., London. 296 pp.Google Scholar
10. Pavlychenko, T. K. and Harrington, J. B. 1935. Root development of weeds and crops in competition under dry farming. Sci. Agric. 16:151–160.Google Scholar
11. Quail, P. H. and Carter, O. G. 1968. Survival and seasonal germination of seeds of Avena fatua and A. ludoviciana . Aust. J. Agric. Res. 19:721–729.Google Scholar
12. Sharma, M. P., McBeath, D. K., and Vanden Born, W. H. 1976. Studies on the biology of wild oats. I. Dormancy, germination and emergence. Can. J. Plant Sci. 56:611–618.Google Scholar
13. Sharma, M. P., McBeath, D. K., and Vanden Born, W. H. 1977. Studies on the biology of wild oats. II. Growth. Can. J. Plant Sci. 57:811–817.CrossRefGoogle Scholar
14. Sharma, M. P. and Vanden Born, W. H. 1978. The biology of Canadian weeds. 27. Avena fatua L. Can. J. Plant Sci. 58:141–157.Google Scholar