کنترل علف های هرز کشت دیم آویشن دنایی ‭Thymus daenensis ‬در منطقه دماوندته

Effects of plastic mulch application were evaluated on Thymus daenensis characteristics and weed control under dry farming in 2006-2008. This experiment was conducted by using a Complete Randomized Block Design, consist of 7 several treatment consist of color plastic mulch in 3 replications. The results showed a significant differences in viable, dry matter, canopy and height of Thymus daenensis with application the several treatments. The results showed that black mulch and twice weeding, increased the dry matter with 384 Kg.ha and essential oil percentage of Thymus daenensis with 1.27, respectively. On the other hand these treatments inhibited weed growth significantly. Black plastic mulch could be introduce due to increasing the quality and quantities of Thymus daenensis and decline the production coasts under dry farming system. Key words: Thymus daenensis, dry farming, plastic mulch, essential oil