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Paddy and Water Environment

, Volume 14, Issue 1, pp 159–167 | Cite as

Influence of soil cover on moisture content and weed suppression under system of rice intensification (SRI)

  • U. Mohammed
  • W. Aimrun
  • M. S. M. Amin
  • A. Khalina
  • U. B. Zubairu
Article

Abstract

System of rice intensification (SRI) makes the yield of rice to significantly increase in addition to water productivity, which in turn will have a positive effect to the farmers as well as the country at large. However, weeds growth is one of the main constraints of SRI due to wider planting pattern (25 × 25 cm or more) and alternate wetting and drying, thereby reducing rice crop yields if weed control is not attempted. Presently, manual weeder is being used which is labour intensive, while motorized weeder reduces the labour but currently, it cannot be able to remove the weeds up to rice canopy closure as recommended in SRI farming. This research was designed to evaluate the influence of two mulches (rice straw mat [SRImat] and commercialized black plastic) on controlling of weed growth, soil moisture and determining of seedling performance. Significant differences in weed density, weed dry weight, weed control efficiency (WCE), weed ratio (WR), number of tillers per hill and volumetric moisture content were observed, between the unmulched treatment (control) and mulched treatments. The dominant weed class associated with SRI was sedges, due to higher summed dominance ratio followed by grasses and broadleaves, respectively. The effectiveness of SRImat mulched on weed control was 98.5 % (WCE) and 0.01 (WR).The research revealed the possibility of SRImat mulch in controlling weeds up to rice canopy closure or 40 DAT as recommended in SRI, retaining of soil moisture and more number of tillers in SRI farming.

Keywords

Single seedling Soil cover Volumetric moisture content Weed ratio Weeding 

Notes

Acknowledgments

The authors thank to Mr. Ezrin and Mr. Azlan for their technical support and advice during conducting of this study. This research was funded by the research Grant from the University Putra Malaysia RUGS vot no. 9376900. The experimental field was at Ladang 2 Universiti Putra Malaysia.

Conflict of interest

The authors declare that they have no conflict of interest.

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Copyright information

© The International Society of Paddy and Water Environment Engineering and Springer Japan 2015

Authors and Affiliations

  • U. Mohammed
    • 1
    • 3
  • W. Aimrun
    • 1
    • 2
  • M. S. M. Amin
    • 1
    • 2
  • A. Khalina
    • 1
  • U. B. Zubairu
    • 1
  1. 1.Department of Biological and Agricultural Engineering, Faculty of EngineeringUniversity Putra MalaysiaSerdangMalaysia
  2. 2. Faculty of Engineering, Smart Farming Technology Research CentreUniversity Putra MalaysiaSerdangMalaysia
  3. 3.Department of Agricultural Education, School of Vocational EducationUmar Suleiman College of Education GashuaGashuaNigeria

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