Hostname: page-component-77c89778f8-7drxs Total loading time: 0 Render date: 2024-07-20T17:05:07.464Z Has data issue: false hasContentIssue false
  • English
  • Français

Herbicides for Control of Leptochloa panicoides in Water-Seeded Rice

Published online by Cambridge University Press:  12 June 2017

R. J. Smith Jr.
R. J. Smith Jr.*
Affiliation:
Agr. Res. Serv., U.S. Dep. of Agr., Stuttgart, AR 72160
Get access Rights & Permissions [Opens in a new window]

Abstract

Postemergence herbicide treatments that controlled tighthead sprangletop [Leptochloa panicoides (Presl) Hitchc.] and redstem (Ammannia auriculata Willd.), did not injure water-seeded rice (Oryza sativa L.), and substantially improved grain yields included: (a) a single application of propanil (3′,4′-dichloropropionanilide) at 4.5 kg/ha applied to weeds 8- to 10-cm tall; (b) two sequential treatments of propanil each at 3.4 kg/ha, with the first treatment applied to weeds 2- to 5-cm tall, and a second treatment applied 4 to 8 days later; (c) a tank mixture of propanil at 3.4 kg/ha and 2,4,5-T [(2,4,5-trichlorophenoxy)acetic acid] at 0.6 kg/ha, applied to weeds 8- to 10-cm tall; and (d) a tank mixture of propanil and molinate (S-ethyl hexahydro-1H-azepine-1-carbothioate), each at 2.2 kg/ha, applied to weeds 8- to 10-cm tall. Treatments that controlled tighthead sprangletop or redstem unsatisfactorily or inconsistently and did not improve grain yields as much as more effective treatments included: preplant or postemergence treatments of molinate, or preplant treatments of nitrofen (2,4-dichlorophenyl-p-nitrophenyl ether), fluorodifen (p-nitrophenyl α,α,α-trifluoro-2-nitro-p-tolyl ether), CNP (2,4,6-trichlorophenyl-p-nitrophenyl ether), or He-314 (p-nitrophenyl-m-tolyl ether).

Type
Research Article
Information
Weed Science , Volume 23 , Issue 1 , January 1975 , pp. 36 - 39
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. Baskett, R.S., Bayer, D., Brandon, D.M., Fischer, B.B., Goss, J., Wick, C.M., and Williams, J.F. 1973. Bolero: a new rice herbicide. Rice J. 76(7):54–56.Google Scholar
2. Buchanan, G.A. 1973. Most common and most troublesome weeds. Res. Rep. Southern Weed Sci. Soc. p. 179.Google Scholar
3. Flinchum, W.T. 1973. Rice weed control. Rice J. 76(7):70.Google Scholar
4. Oelke, E.A. and Morse, M.D. 1968. Propanil and molinate for control of barnyardgrass in water-seeded rice. Weed Sci. 16:235–239.CrossRefGoogle Scholar
5. Palmer, R.D. 1973. Today's weed – sprangletop. Weeds Today 4(3):23.Google Scholar
6. Smith, R.J. Jr. 1968. Control of grass and other weeds in rice with several herbicides. Arkansas Agr. Exp. Sta. Rpt. Ser. 167:38 p.Google Scholar
7. Smith, R.J. Jr. 1970. Weed control methods, losses, and cost due to weeds. Pages 24–37. in Tech. Papers FAO. Int. Conf. on Weed Control. Weed Sci. Soc. of Amer., Urbana, Illinois. 668 p.Google Scholar
8. Smith, R.J. Jr. and Seaman, D.E. 1973. Weeds and their control. Pages 135–140. in Rice in the United States: Varieties and Production. U.S. Dep. Agr., Agr. Hand. 289. U.S. Gov. Printing Office, Washington, D.C. 154 p.Google Scholar
9. Smith, R.J. Jr. and Shaw, W.C. 1966. Weeds and their control in rice production. U.S. Dep. Agr., Agr. Hand. 292. U.S. Gov. Printing Office, Washington, D.C. 64 p.Google Scholar