Study on resistant biotypes of Echinochloa crus-galli in Malaysia

M. Motior Rahman, Ismail Sahid, Abdul Shukor Juraimi

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Present study was carried out to identify resistant biotypes of Echinochloa crus-galli and to determine their control measures by application of herbicides. Propanil, quinclorac and cyhalofop-butyl was tested against 10 populations of Echinochloa crus-galli which was collected from rice fields of Kedah, Malaysia. Weed populations such as KPT, SB1, SB2, KPE, SY, TD, DB, KB1 and KB2 was identified as resistant biotypes and only KP population recorded as susceptible biotype to propanil. Out of 10 populations, only KB1 was found resistant biotypes and all others identified as susceptible to quinclorac. Weed populations of KP, KPT, SB1, KPE, SY and KB2 was found susceptible while SB2, TD and KB1 identified as resistant biotypes to Cyhalofop-butyl. Among 10 tested populations, only KB1 was found resistant biotype to propanil, quinclorac and cyhalofop-butyl. The ED50 values from the dose-response experiments indicated that the resistant biotype was >four times resistant to propanil, >10 times resistant to quinclorac and >17 times resistant to cyhalofop-butyl, respectively than susceptible biotype. Resistant biotype KB1 was controlled by combined application of quinclorac and propanil at rates of 0.30 and 5.50 and kg a.i. ha-1 or quinclorac and cyhalofop-butyl at rates of 0.30 and 0.80 kg a.i. ha-1, respectively.

Original languageEnglish
Pages (from-to)107-115
Number of pages9
JournalAustralian Journal of Crop Science
Volume4
Issue number2
Publication statusPublished - Mar 2010

Fingerprint

Echinochloa crus-galli
biotypes
quinclorac
Malaysia
cyhalofop
propanil
weeds
pesticide application
paddies
dose response
control methods

Keywords

  • Barnyardgrass Malaysia
  • Cyhalofop-butyl
  • Echinochloa crus-galli
  • Propanil
  • Quinclorac

ASJC Scopus subject areas

  • Agronomy and Crop Science
  • Plant Science

Cite this

Study on resistant biotypes of Echinochloa crus-galli in Malaysia. / Rahman, M. Motior; Sahid, Ismail; Juraimi, Abdul Shukor.

In: Australian Journal of Crop Science, Vol. 4, No. 2, 03.2010, p. 107-115.

Research output: Contribution to journalArticle

Rahman, M. Motior ; Sahid, Ismail ; Juraimi, Abdul Shukor. / Study on resistant biotypes of Echinochloa crus-galli in Malaysia. In: Australian Journal of Crop Science. 2010 ; Vol. 4, No. 2. pp. 107-115.
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