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Preplant Atrazine Applications on Sorghum

Published online by Cambridge University Press:  12 June 2017

G. A. Wicks  and
O. C. Burnside
G. A. Wicks
Affiliation:
North Platte Station at North Platte, Nebr. 69101, Univ. of Nebraska
O. C. Burnside
Affiliation:
Department of Agronomy at Lincoln, Nebr. 68503, Univ. of Nebraska
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Abstract

Experiments were conducted at Lincoln and North Platte, Nebraska, during 1967 and 1968 to determine the effect of early preplant applications of 2-chloro-4-(ethylamino)-6-(isopropylamino)-s-triazine (atrazine) on sorghum [Sorghum bicolor (L.) Moench ‘Nebraska 505′] and weed yields. Atrazine at 2.24 kg/ha was applied on separate plots preplant and incorporated about April 15, April 30, and May 15, and also preemergence without incorporation about May 17, after sorghum was planted. Sorghum grain yields were highest on plots where atrazine was applied preemergence rather than preplant due mainly to better weed control. Sorghum planted with planter units equipped with furrow openers, set to remove 2.5 to 5 cm of surface soil, had better sorghum stands and smaller weed yields than sorghum planted without removing surface soil. Sorghum population was the lowest following the April 30 atrazine application due to stand loss at North Platte, but grain yields were not significantly different from other preplant treatments since stand loss was compensated for by more heads per plant, larger heads, and larger seed.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 1 , January 1972 , pp. 49 - 52
Copyright
Copyright © Weed Science Society of America 

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References

Literature Cited

1. Behrens, R., Darwent, A. L., Evans, S. D., and Nelson, W. W. 1968. Fall vs. spring applications of atrazine for weed control in corn. No. Centr. Weed Contr. Conf. Res. Rep. 25:147–148.Google Scholar
2. Burnside, O. C. and Wicks, G. A. 1964. Cultivation and herbicide treatments of dryland sorghum. Weeds 12:307–310.CrossRefGoogle Scholar
3. Knake, E. L. 1967. Date of application of atrazine for weed control in corn. No. Centr. Weed Contr. Conf. Res. Rep. 24:125–126.Google Scholar
4. Phillips, W. M. 1964. A new technique of controlling weeds in sorghum in a wheat-sorghum-fallow rotation in the Great Plains. Weeds 12:42–44.Google Scholar
5. 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 12:77–79.CrossRefGoogle Scholar
6. Stickler, F. C. 1964. Stand establishment and yield of grain sorghum as affected by method of planting and use of press wheels. Agron. J. 56:53–56.Google Scholar
7. Wicks, G. A. 1966. Methods of applying atrazine and propazine for selective weed control in sorghum. No. Centr. Weed Contr. Conf. Proc. 20:17.Google Scholar
8. Wicks, G. A., Burnside, O. C., and Fenster, C. R. 1970. Influence of soil incorporation on herbicide performance in sorghum. Agron. J. 62:252–255.Google Scholar
9. Wicks, G. A. and Somerhalder, B. R. 1971. Effect of seed-bed preparation for corn on distribution of weed seed. Weed Sci. 19: (In press).CrossRefGoogle Scholar