Control measures of sprangletop (Leptochloa chinensis) resistant biotype using propanil, quinclorac and cyhalofop-butyl

M. Motior Rahman, M. Aminul Islam, M. Sofian-Azirun, N. B. Amru, Ismail Sahid

Research output: Contribution to journalArticle

Abstract

Sprangletop is one of the most common and dominant weed species in rice fields. Repeated use of the same herbicides in the same field over time to combat this menace can lead to weed resistance to the herbicides causing >50% yield loss of directseeded rice in Malaysia. Thus, experiments were conducted to quantify the resistance levels and to evaluate potential for weed control using rates of propanil, quinclorac and cyhalofop-butyl individually or in combination. Initial foliar injury (40 to 55%) was observed in the resistant (R) sprangletop biotype (Kedah-SB8) but finally regain and exhilarate by use of propanil, quinclorac and cyhalofop-butyl at eight-folds the recommended field use rates. The effective dose of propanil, cyhalofop-butyl and quinclorac to inhibit plant growth by 50% (ED50) was 0.58 g m-2, 0.05 g m-2 and 0.09 g m-2, for the R biotype, while for that of the susceptible (S) biotype was 0.20 g m-2, 0.008 g m-2 and 0.006 g m-2, respectively. The ED50 values demonstrate that the sprangletop R biotype (Kedah-SB8) was 2.90 times more resistant to propanil, 6.25 times more resistant to cyhalofopbutyl, and 15.00 times more resistant to quinclorac than the S biotype. Sprangletop R biotype (Kedah-SB8) can be fully controlled by the combined use of recommended rates of propanil (0.55 g m-2) and cyhalofop-butyl (0.08 g m-2) or with double dosage of recommended field use rate of propanil (1.10 g m-2) or cyhalofop-butyl (0.16 g m-2) and quinclorac (0.06 g m-2), respectively. The above results show that rice growers can take the advantage of the combined used of herbicides to control R biotype of sprangletop grass.

Original languageEnglish
Pages (from-to)801-806
Number of pages6
JournalInternational Journal of Agriculture and Biology
Volume16
Issue number4
Publication statusPublished - 2014

Fingerprint

Propanil
Leptochloa chinensis
cyhalofop
quinclorac
propanil
biotypes
control methods
Herbicides
Herbicide Resistance
Weed Control
herbicides
weeds
Malaysia
rice
Poaceae
herbicide resistance
dosage
cyhalofop-butyl
paddies
weed control

Keywords

  • Control
  • Cyhalofop-butyl
  • Herbicides
  • Propanil
  • Quinclorac
  • Resistant biotype
  • Sprangletop

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)

Cite this

Control measures of sprangletop (Leptochloa chinensis) resistant biotype using propanil, quinclorac and cyhalofop-butyl. / Rahman, M. Motior; Islam, M. Aminul; Sofian-Azirun, M.; Amru, N. B.; Sahid, Ismail.

In: International Journal of Agriculture and Biology, Vol. 16, No. 4, 2014, p. 801-806.

Research output: Contribution to journalArticle

Rahman, M. Motior ; Islam, M. Aminul ; Sofian-Azirun, M. ; Amru, N. B. ; Sahid, Ismail. / Control measures of sprangletop (Leptochloa chinensis) resistant biotype using propanil, quinclorac and cyhalofop-butyl. In: International Journal of Agriculture and Biology. 2014 ; Vol. 16, No. 4. pp. 801-806.
@article{763dfc06cc2c4f1a9b5f94a03d985ee1,
title = "Control measures of sprangletop (Leptochloa chinensis) resistant biotype using propanil, quinclorac and cyhalofop-butyl",
abstract = "Sprangletop is one of the most common and dominant weed species in rice fields. Repeated use of the same herbicides in the same field over time to combat this menace can lead to weed resistance to the herbicides causing >50{\%} yield loss of directseeded rice in Malaysia. Thus, experiments were conducted to quantify the resistance levels and to evaluate potential for weed control using rates of propanil, quinclorac and cyhalofop-butyl individually or in combination. Initial foliar injury (40 to 55{\%}) was observed in the resistant (R) sprangletop biotype (Kedah-SB8) but finally regain and exhilarate by use of propanil, quinclorac and cyhalofop-butyl at eight-folds the recommended field use rates. The effective dose of propanil, cyhalofop-butyl and quinclorac to inhibit plant growth by 50{\%} (ED50) was 0.58 g m-2, 0.05 g m-2 and 0.09 g m-2, for the R biotype, while for that of the susceptible (S) biotype was 0.20 g m-2, 0.008 g m-2 and 0.006 g m-2, respectively. The ED50 values demonstrate that the sprangletop R biotype (Kedah-SB8) was 2.90 times more resistant to propanil, 6.25 times more resistant to cyhalofopbutyl, and 15.00 times more resistant to quinclorac than the S biotype. Sprangletop R biotype (Kedah-SB8) can be fully controlled by the combined use of recommended rates of propanil (0.55 g m-2) and cyhalofop-butyl (0.08 g m-2) or with double dosage of recommended field use rate of propanil (1.10 g m-2) or cyhalofop-butyl (0.16 g m-2) and quinclorac (0.06 g m-2), respectively. The above results show that rice growers can take the advantage of the combined used of herbicides to control R biotype of sprangletop grass.",
keywords = "Control, Cyhalofop-butyl, Herbicides, Propanil, Quinclorac, Resistant biotype, Sprangletop",
author = "Rahman, {M. Motior} and Islam, {M. Aminul} and M. Sofian-Azirun and Amru, {N. B.} and Ismail Sahid",
year = "2014",
language = "English",
volume = "16",
pages = "801--806",
journal = "International Journal of Agriculture and Biology",
issn = "1560-8530",
publisher = "Friends Science Publishers",
number = "4",

}

TY - JOUR

T1 - Control measures of sprangletop (Leptochloa chinensis) resistant biotype using propanil, quinclorac and cyhalofop-butyl

AU - Rahman, M. Motior

AU - Islam, M. Aminul

AU - Sofian-Azirun, M.

AU - Amru, N. B.

AU - Sahid, Ismail

PY - 2014

Y1 - 2014

N2 - Sprangletop is one of the most common and dominant weed species in rice fields. Repeated use of the same herbicides in the same field over time to combat this menace can lead to weed resistance to the herbicides causing >50% yield loss of directseeded rice in Malaysia. Thus, experiments were conducted to quantify the resistance levels and to evaluate potential for weed control using rates of propanil, quinclorac and cyhalofop-butyl individually or in combination. Initial foliar injury (40 to 55%) was observed in the resistant (R) sprangletop biotype (Kedah-SB8) but finally regain and exhilarate by use of propanil, quinclorac and cyhalofop-butyl at eight-folds the recommended field use rates. The effective dose of propanil, cyhalofop-butyl and quinclorac to inhibit plant growth by 50% (ED50) was 0.58 g m-2, 0.05 g m-2 and 0.09 g m-2, for the R biotype, while for that of the susceptible (S) biotype was 0.20 g m-2, 0.008 g m-2 and 0.006 g m-2, respectively. The ED50 values demonstrate that the sprangletop R biotype (Kedah-SB8) was 2.90 times more resistant to propanil, 6.25 times more resistant to cyhalofopbutyl, and 15.00 times more resistant to quinclorac than the S biotype. Sprangletop R biotype (Kedah-SB8) can be fully controlled by the combined use of recommended rates of propanil (0.55 g m-2) and cyhalofop-butyl (0.08 g m-2) or with double dosage of recommended field use rate of propanil (1.10 g m-2) or cyhalofop-butyl (0.16 g m-2) and quinclorac (0.06 g m-2), respectively. The above results show that rice growers can take the advantage of the combined used of herbicides to control R biotype of sprangletop grass.

AB - Sprangletop is one of the most common and dominant weed species in rice fields. Repeated use of the same herbicides in the same field over time to combat this menace can lead to weed resistance to the herbicides causing >50% yield loss of directseeded rice in Malaysia. Thus, experiments were conducted to quantify the resistance levels and to evaluate potential for weed control using rates of propanil, quinclorac and cyhalofop-butyl individually or in combination. Initial foliar injury (40 to 55%) was observed in the resistant (R) sprangletop biotype (Kedah-SB8) but finally regain and exhilarate by use of propanil, quinclorac and cyhalofop-butyl at eight-folds the recommended field use rates. The effective dose of propanil, cyhalofop-butyl and quinclorac to inhibit plant growth by 50% (ED50) was 0.58 g m-2, 0.05 g m-2 and 0.09 g m-2, for the R biotype, while for that of the susceptible (S) biotype was 0.20 g m-2, 0.008 g m-2 and 0.006 g m-2, respectively. The ED50 values demonstrate that the sprangletop R biotype (Kedah-SB8) was 2.90 times more resistant to propanil, 6.25 times more resistant to cyhalofopbutyl, and 15.00 times more resistant to quinclorac than the S biotype. Sprangletop R biotype (Kedah-SB8) can be fully controlled by the combined use of recommended rates of propanil (0.55 g m-2) and cyhalofop-butyl (0.08 g m-2) or with double dosage of recommended field use rate of propanil (1.10 g m-2) or cyhalofop-butyl (0.16 g m-2) and quinclorac (0.06 g m-2), respectively. The above results show that rice growers can take the advantage of the combined used of herbicides to control R biotype of sprangletop grass.

KW - Control

KW - Cyhalofop-butyl

KW - Herbicides

KW - Propanil

KW - Quinclorac

KW - Resistant biotype

KW - Sprangletop

UR - http://www.scopus.com/inward/record.url?scp=84900872261&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84900872261&partnerID=8YFLogxK

M3 - Article

VL - 16

SP - 801

EP - 806

JO - International Journal of Agriculture and Biology

JF - International Journal of Agriculture and Biology

SN - 1560-8530

IS - 4

ER -