Hostname: page-component-848d4c4894-tn8tq Total loading time: 0 Render date: 2024-06-30T12:59:53.393Z Has data issue: false hasContentIssue false
  • English
  • Français

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
Get access Rights & Permissions [Opens in a new window]

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.

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 

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. 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