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Asian Journal of Plant Sciences
  Year: 2007 | Volume: 6 | Issue: 4 | Page No.: 599-604
DOI: 10.3923/ajps.2007.599.604
 
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Using Plant Density to Increase Competition Ability in More and Less Competitive Wheat Cultivars with Wild Oat

M. Armin , Gh. Noormohammadi , E. Zand , M.A. Baghestani and F. Darvish

Abstract:
The effects various densities of wild oat and wheat on the growth and reproductive output of wheat and growth of wild oat were investigated in field study in 2004. The experiment was established as a factorial combination of wheat varieties (Rooshan and Niknejad) wheat density (recommended, recommended +25% and recommended+50%) and wild oat (0, 25, 50 and 75 plants m-2) densities. The effect of wild oat density on wheat yield loss and the effect of wheat density on wild oat biomass were described with a rectangular hyperbola model. The presence of wild oat in wheat reduced grain yield of wheat, number of tiller, number of spike m-2 and the magnitude of this reduction was dependent on weed density. Increasing the density of wheat significantly reduced the unpleasant effects of wild oat on wheat. Wild oat biomass was decreased, as crop density increased. The maximum grain yield of Niknejad and Rooshan were achieved at its recommended +25% and recommended wheat density, respectively and increased density due to increase inter specific competition decrease grain yield at two cultivars. As wild oat density increased, Number of tiller per plant, spike m-2 decreased. The results indicated that higher densities of wild oat had heights negative effect on wheat yield and higher wheat densities were able to suppress biomass of this weed species.
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How to cite this article:

M. Armin , Gh. Noormohammadi , E. Zand , M.A. Baghestani and F. Darvish , 2007. Using Plant Density to Increase Competition Ability in More and Less Competitive Wheat Cultivars with Wild Oat. Asian Journal of Plant Sciences, 6: 599-604.

DOI: 10.3923/ajps.2007.599.604

URL: https://scialert.net/abstract/?doi=ajps.2007.599.604

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