عنوان مقاله [English]
To evaluate the effects of four kinds of organic non-living mulches (include wheat straw, sawdust, coco peat and peat moss mulches) and metribuzin (herbicide treatment) on weed control and yield of tomato cv. "CH" the experiment was designed in randomized complete blocks with 7 treatments in 3 replications in College of Agriculture, Shiraz University in 2012. Analysis of variance revealed the effects of treatments used on all traits both the weeds and in the case of tomatoes at harvest time together has been the difference in the level of 1%. According to the results all mulch treatments showed lower efficiency in weed control than the metribuzin. Also all mulches treatments showed the higher weed density compared to metribuzin. Among non-living organic mulches the wheat straw showed the lowest weed control (62.33 weed/m-2). Based on average data, it was found that metribuzin treatment compared with mulch applied treatments greater effect on suppressing weeds by preventing their growth rate and with all mulch treatments had statistically significant difference. Four non-living organic mulch applied in terms of preventing weed growth rate acted in a level and there is no significant statistical difference. According to the results observed that the highest tomato yield per unit area in peat moss mulch (5.72 kg/m2) and the lowest yield in the weedy plots (1.24 kg/m2). In between treatments sawdust mulch mulch only less efficient than the metribuzin in the production of tomatoes. To calculate the percentage of predicted performance of each of the treatments was applicable only Gompertz model and only since the beginning of weed interference was the difference between the treatments.