African Journal of
Biotechnology

  • Abbreviation: Afr. J. Biotechnol.
  • Language: English
  • ISSN: 1684-5315
  • DOI: 10.5897/AJB
  • Start Year: 2002
  • Published Articles: 12487

Full Length Research Paper

Efficacy and economics of different herbicides in aerobic rice system

A. S. M. Jaya Suria1, Abdul Shukor Juraimi1,4, Md. Moshiur Rahman1,2*, Azmi B. Man3 and Ahmad Selamat1
1Department of Crop Science, University Putra Malaysia, Serdang, Selangor DE, Malaysia. 2Department of Agronomy, Bangladesh Agricultural University, Mymensingh, Bangladesh. 3MARDI Seberang Perai, Pet Surat 203, 13200 Kepala batas, Pulau Pinang, Malaysia. 4Institute of Tropical Agriculture, University Putra Malaysia, Serdang, Selangor DE, Malaysia.
Email: [email protected]

  •  Accepted: 25 May 2011
  •  Published: 03 August 2011

Abstract

Aerobic rice system, the most promising irrigation water saving rice production technology, is highly impeded by severe weed pressure. Weed control through the use of same herbicide causes development of herbicide resistant weed biotypes and serious problem in weed management. This study was aimed at finding out herbicides with different mode of actions to suggest effective weed control herbicide technology in aerobic rice system. This study was conducted at Malaysian Agricultural Research and Development Institute (MARDI), Seberang Perai Station, Penang, Malaysia during off season 2008 (April – July 2008) and main season 2008-2009 (November 2008 – February 2009) to evaluate fourteen and eight combinations of different locally available herbicides, in the off season and main seasons, respectively. A weed free control and a weedy check treatment were also included in the both trials. The trial used a RCB design with three replications in the off season and four replications in the main season, respectively. Twenty one (21)weed species were found in the aerobic rice field but two species (Eleusine indicaand Digitaria ascendens) appeared as dominant. Based on the weed control efficiency, weed index values and net benefit from economic analysis, it appeared that the herbicide combinations such as Propanil/Benthiocarb fb Bentazone/MCPA or Cyhalofop-butyl+Bensulfuron fb Bentazone/MCPA or Pendimethalin fb Cyhalofop-butyl+ Bensulfuron fb Bentazone/MCPA or Pretilachlor+Pendimethalin fb Bentazone/MCPA could be the possible alternative options for effective and economic weed control in rice under aerobic system towards avoiding development of herbicide resistance in weed. Manual weeding is not at all cost-effective. The selected herbicide combinations could be used in rotation for sustainable weed management and to run the aerobic rice system as a profitable business venture.

 

Key words: Herbicide combination, summed dominance ratio, weed control efficiency, weed index, rice yield.

Abbreviation

HGR, Height growth rate; DAS, days after sowing; SPAD, silicon photon activated diode; fb, followed by.

Copyright © 2024 Author(s) retain the copyright of this article.

This article is published under the terms of the Creative Commons Attribution License 4.0

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