Hostname: page-component-cd9895bd7-hc48f Total loading time: 0 Render date: 2024-12-21T10:05:38.313Z Has data issue: false hasContentIssue false

Competitiveness and Herbicide Tolerance of Sorghum Hybrids

Published online by Cambridge University Press:  12 June 2017

O. C. Burnside
Affiliation:
Dep. of Agron. at Lincoln, 68503, Univ. of Nebraska
G. A. Wicks
Affiliation:
North Platte Sta. at North Platte, Nebraska 69101, Univ. of Nebraska

Abstract

The competitiveness of 10 sorghum [Sorghum bicolor (L.) Moench] hybrids to weeds and their tolerances to commonly used sorghum herbicides were studied across Nebraska. The three best weed competitors in this study were sorghum hybrids ‘RS 671′, ‘RS 690′, and ‘AKS 663′; whereas the three poorest weed competitors were ‘AKS 614′, ‘NB 505′, and ‘RS 633′. Sorghum hybrids showing a significant yield reduction from a 2× rate of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) were ‘SD 441′, ‘SD 451′, and ‘NB 505′. ‘SD 441 also suffered a significant yield reduction from a normal rate of 2-chloro-N-isopropylacetanilide (propachlor) applied preemergence plus a 4× rate of (2,4-dichlorophenoxy)acetic acid (2,4-D) applied postemergence. With the above exceptions, sorghum hybrids generally showed considerable tolerance to 2× rates of herbicides commonly used on sorghum.

Type
Research Article
Copyright
Copyright © 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. Burnside, O. C. and Wicks, G. A. 1969. Influence of weed competition on sorghum growth. Weed Sci. 17:332334.Google Scholar
2. Guneyli, E., Burnside, O. C., and Nordquist, P. T. 1969. Influence of seedling characteristics on weed competitive ability of sorghum hybrids and inbred lines. Crop Sci. 9: 713716.Google Scholar
3. Phillips, W. M. and Ross, W. M. 1962. Effect of atrazine and propazine on several sorghum genotypes. Proc. N. Cent. Weed Contr. Conf. 19:36.Google Scholar
4. Robinson, R. G., Nelson, W. W., Thompson, R. L. and Thompson, J. R. 1964. Herbicides and mixtures for annual weed control in grain sorghum. Weeds 12:7779.Google Scholar
5. Wiese, A. F. and Rea, H. E. 1962. Treating irrigated grain sorghum with preemergence herbicides. Crop Sci. 2:2931.Google Scholar