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Asian Journal of Crop Science
  Year: 2011 | Volume: 3 | Issue: 4 | Page No.: 179-187
DOI: 10.3923/ajcs.2011.179.187
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Evaluating Weeds Competitive Ability in a Corn Field in Southern West of Iran

H. Ghani Zadeh, S. Lorzadeh and N. Aryannia

The knowledge of differences between weed species in their relative capacity to capture growth-limiting resources provides information which can be used to predict competitive ability of weed. A field study was conducted to compare weeds growth indices to evaluate weeds competitive ability. The experimental design was a Randomized Complete Block (RCBD) with 3 replications. Treatments were consisted of increasing durations of weed which were established by delaying weed Removal Time (RT) to different corn growth stages. Growth analysis was performed by determining weeds growth indices. In this trial different weed species exhibited marked differences in growth indices during growing season. Compare to other weeds, Barnyard grass had the greatest leaf area index and weed growth rate from the beginning to the middle of growing season. However, redroot pigweed achieved its maximum growth later from the middle of growing season to the end of season and became the dominant weed for that time. Redroot pigweed had by far the greatest relative growth rate compare with other weeds. It reveals that barnyard grass was the dominant weed for the beginning of growing season. However, from the middle of growing season till the end redroot pigweed became the dominant weed.
PDF Fulltext XML References Citation Report Citation
  •    Nitrogen Fertilizer and Weed (Euphorbia heterophylla Linn.) Effects on the growth Parameters of Macrotyloma geocarpa (Harms) Marechal and Beudet
  •    Critical Period of Weed Control in Winter Canola (Brassica napus L.) in a Semi-Arid Region
  •    Critical Period for Weed Control in Corn in the South-West of Iran
  •    Growth and Yield Losses in Wheat Due to Different Weed Densities
  •    Influence of System of Rice Intensification (SRI) Practices on Growth Characters, Days to Flowering, Growth Analysis and Labour Productivity of Rice
How to cite this article:

H. Ghani Zadeh, S. Lorzadeh and N. Aryannia, 2011. Evaluating Weeds Competitive Ability in a Corn Field in Southern West of Iran. Asian Journal of Crop Science, 3: 179-187.

DOI: 10.3923/ajcs.2011.179.187






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