Allelopathic inhibition by Fimbristylis miliacea on the growth of the rice plants

Ismail Sahid, A. B. Siddique

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

A study on the allelopathic effects of Fimbristylis miliacea on four rice varieties namely MR211, MRQ74, MR220 and MR84 was carried out under laboratory and greenhouse conditions. Three concentrations of the aqueous extract of the weed (12.5, 25 and 50 g/ l) and debris (5, 10 and 20 g dry debris / kg soil) were used to test the allelopathic effect of F, miliacea on the growth of the four rice varieties. The weed stem extract showed comparatively higher growth inhibitory effects than that from the leaf. The weed extract caused greater reduction on the root length of the rice plant than on the shoot length. Of the 4 rice varieties tested, MRQ74 was found to be the most susceptible to the weed inhibitory effects. At full strength the F.miliacea extract caused root and shoot reduction of MRQ74 by 82.01 and 53.61% of the control, respectively. Plant height and seedling fresh weight of all the four varieties were reduced by the debris of F. miliacea. At the highest concentration MRQ74 showed a greater reduction in plant height and dry weight (57.1 and 51.3% respectively) compared to the other varieties tested. The weed root exudate caused significant reduction in plant height and dry weight of MRQ74 followed by MR220. The allelopathic effect of the weed root exudate was observed to be lower than the effect of the weed extracts and debris. The inhibitory effects of the extracts and debris of F. miliacea on rice growth parameters were found to be concentration dependent.

Original languageEnglish
Pages (from-to)2423-2427
Number of pages5
JournalAdvances in Environmental Biology
Volume6
Issue number8
Publication statusPublished - Jul 2012

Fingerprint

Fimbristylis
weed
rice
weeds
Growth
extracts
Exudates and Transudates
Weights and Measures
root exudates
Plant Shoots
shoot
Seedlings
shoots
Soil
effect
Oryza
stem
seedling
greenhouses
stems

Keywords

  • Aqueous extract
  • Debris
  • Fimbristylis miliacea
  • Inhibitory Malaysian rice

ASJC Scopus subject areas

  • Agricultural and Biological Sciences(all)
  • Environmental Science(all)

Cite this

Allelopathic inhibition by Fimbristylis miliacea on the growth of the rice plants. / Sahid, Ismail; Siddique, A. B.

In: Advances in Environmental Biology, Vol. 6, No. 8, 07.2012, p. 2423-2427.

Research output: Contribution to journalArticle

Sahid, Ismail ; Siddique, A. B. / Allelopathic inhibition by Fimbristylis miliacea on the growth of the rice plants. In: Advances in Environmental Biology. 2012 ; Vol. 6, No. 8. pp. 2423-2427.
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