In order to evaluate the effect of solarization time and plastic color on germination of Amaranthus retroflexus and Sinapis arvensis in Estahban region, this study was carried out in a factorial arrangement based on RCBD with three replications. Factors were selected as
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In order to evaluate the effect of solarization time and plastic color on germination of Amaranthus retroflexus and Sinapis arvensis in Estahban region, this study was carried out in a factorial arrangement based on RCBD with three replications. Factors were selected as solarization duration at 0, 15, 30, 45 and 60 days, and plastic color at Transparent, non-transparent and dark levels. Result showed that by increasing solarization duration, the percentage of germination of the seeds of Amaranthus retroflexus and Sinapis arvensis, decreased. The lowest germination rate was observed in 60 days treatment and the highest germination percentage was observed in control treatment. Also, with increasing color plastic dullness, the germination percentage of the weed seeds decreased. According to the results of this experiment, the increase in extreme temperature under the plastic substrate caused a severe reduction in the grain, so that the use of late plastic coating caused most of the plants to disappear at these levels.
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