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Selective Control of Cyperaceous Weeds With K-223

Published online by Cambridge University Press:  12 June 2017

Tetsuo Takematsu,
Makoto Konnai,
Takeo Akashiba and
Nansho Seki
Tetsuo Takematsu
Affiliation:
Weed Contr. Res. Inst., Utsunomiya Univ., Utsunomiya-shi, Japan
Makoto Konnai
Affiliation:
Weed Contr. Res. Inst., Utsunomiya Univ., Utsunomiya-shi, Japan
Takeo Akashiba
Affiliation:
Central Res. Lab., Showa Denko Co., Ltd., Tamagawa, Ota-ku, Tokyo, Japan
Nansho Seki
Affiliation:
Central Res. Lab., Showa Denko Co., Ltd., Tamagawa, Ota-ku, Tokyo, Japan
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Abstract

A new urea compound, 1-(α,α-dimethylbenzyl)-3-p-tolylurea (hereinafter referred to as K-223) is characterized by its selective control of cyperaceous weeds. This compound does not show any Hill reaction inhibition or foliar contact toxicity. Its main effect is toxicity to roots. K-223 selectively controls slender spikerush [Eleocharis acicularis (L.) R. & S.], purple nutsedge (Cyperus rotundus L.) and annual cyperaceous weeds. It is practically nontoxic to most broadleaf weeds. As the selectivity between crops and grass weeds is high, K-223 is applicable with little phytotoxicity. Thus sowing or transplanting is possible even just after application of K-223.

Information

Type
Research Article
Information
Weed Science , Volume 23 , Issue 1 , January 1975, pp. 15 - 19
Copyright
Copyright © 1975 by the Weed Science Society of America 

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References

Literature Cited

1. Burgis, D.S. 1969. Phytotoxicity to purple nutsedge (Cyperus rotundus L.) and soil persistence of six forms of (2,4-dichlorophenoxy)acetic acid herbicide. Proc. S. Weed Sci. Soc. 22:328–331.Google Scholar
2. Burr, R.J. and Warren, G.F. 1971. Enhancement of herbicide activity with an isoparaffinic oil carrier. Weed Sci. 19:701–705.Google Scholar
3. Hauser, E.W. 1963. Response of purple nutsedge to amitrole, 2,4-D and EPTC. Weeds 11:251–252.Google Scholar
4. Ishii, K. 1971. Development and chemical control of purple nutsedge on the forest nursery. Weed Res. (Japan) 12:45–48.Google Scholar
5. Ueki, K. and Yamasue, Y. 1968. Studies on control of nutsedge, Cyperus rotundus L., a perennial weed in upland fields. Weed Res. (Japan) 7:38–40.Google Scholar
6. Waters, W.E. and Burgis, D.S. 1968. Herbicidal persistence in soil and its effect on purple nutsedge. Weed Sci. 16:149–151.Google Scholar
7. Wills, G.D. and Briscoe, G.A. 1970. Anatomy of purple nutsedge. Weed Sci. 18:631–635.CrossRefGoogle Scholar