Hostname: page-component-586b7cd67f-tf8b9 Total loading time: 0 Render date: 2024-11-23T22:27:44.226Z Has data issue: false hasContentIssue false
  • English
  • Français

Predicting Sugarbeet Root Losses Based on Kochia Densities

Published online by Cambridge University Press:  12 June 2017

E. E. Schweizer
E. E. Schweizer*
Affiliation:
Agr. Res. Serv., U. S. Dep. of Agr., Colorado State Univ., Fort Collins, CO 80521
Get access Rights & Permissions [Opens in a new window]

Abstract

The reduction in root yield (Y) of sugarbeets (Beta vulgaris L.) caused by specific densities (X) of kochia [Kochia scoparia (L.) Schrad.] was predicted by using the linear equation Y = 4.30 + 1.81 X. This equation was most accurate when the kochia density was 20 plants or less per 30.5 m of row. In 28 of 30 weed-control systems, where kochia densities ranged from 0.2 to 16.5 plants per 30.5 m of row, the predicted yield reductions were within 5% of the actual yield reductions.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 6 , November 1973 , pp. 565 - 567
Copyright
Copyright © 1973 Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

1. Brimhall, P. B., Chamberlain, E. W., and Alley, H. P. 1965. Competition of annual weeds and sugarbeets. Weeds 13:33–35.CrossRefGoogle Scholar
2. Dawson, J. H. 1965. Competition between irrigated sugarbeets and annual weeds. Weeds 13:245–249.CrossRefGoogle Scholar
3. Dew, D. A. 1972. An index of competition for estimating crop loss due to weeds. Can. J. Plant Sci. 52:921–927.CrossRefGoogle Scholar
4. Noda, K., Ozawa, K., and Ibaraki, K. 1968. Studies on the damage of rice plants due to weed competition (effect of barnyardgrass competition on growth, yield, and some eco-physiological aspects of rice plants). Bull. Kyushu Agr. Exp. Sta. 13:345–367.Google Scholar
5. Schweizer, E. E. and Dawson, J. H. 1970. Weed control methods, losses and costs due to weeds, and benefits of weed control in sugarbeets. Pages 344–356 in FAO International Conference on Weed Control. Weed Sci. Soc. Amer., Urbana, Ill. Google Scholar
6. Thurlow, D. L. and Buchanan, G. A. 1972. Competition of sicklepod with soybeans. Weed Sci. 20:379–384.CrossRefGoogle Scholar
7. Weatherspoon, D. M. and Schweizer, E. E. 1971. Competition between sugarbeets and five densities of kochia. Weed Sci. 19:125–128.CrossRefGoogle Scholar
8. Zakharenko, V. A. 1968. Investigating the competitive ability of weeds and crop plants in relation to herbicide application. Khimiya sel' Khoz. 6:447–452. (Taken from Weed Abstr. 18:205.1969).Google Scholar