University of Tehran Journal of Range and Watershed Managment 5044-2008 70 2 2017 07 23 Study the effects of using zeolite on the prototypical stages of growth in pasture species: Cymbopogon Olivieri ,Medicago sativa and Medicago scutellata Study the effects of using zeolite on the prototypical stages of growth in pasture species: Cymbopogon Olivieri ,Medicago sativa and Medicago scutellata 333 344 62881 10.22059/jrwm.2017.226863.1101 FA Somaie Dehdary Zohreh Kuhansani Fatemeh Shojaee Ruhangiz Kazemi Journal Article 2017 02 11 To evaluate the effect of zeolite on the growth of plants in drought conditions. <em>Cymbopogonolivieri, Medicago sativa, Medicagoscutellata</em> in three zeolite levels (2 g, 4 g and zero in a kilogram potting soil) with 15 repetitions was considered. After ensuring the germination of plants, 7-day irrigation tension was applied to them. It was found out that following the first tension, the effect of zeolite in improving viability and mitigation of drought tension will appear and it is observed that in 20% and 40% Zeolite treatments, the percentage of viability and germination of plants is much more in comparison with control group. Gradually, following applying tensions, the average number of remaining saplings decreased in control treatments. The highest percentage of residual base, the whole plant length, stem fresh weight, and dry weight of zeolite was observed in Cymbopogonolivieri in the treatment of 40%. More traits such as stem length, fresh weight, dry weight and fresh weight roots in the treatment of 40% zeolite in Medicagoscutellata species improved. The highest root weight was observed in Medicago sativa using 40% zeolite. No significant difference was detected in terms of wet root length in three plant species. To evaluate the effect of zeolite on the growth of plants in drought conditions. <em>Cymbopogonolivieri, Medicago sativa, Medicagoscutellata</em> in three zeolite levels (2 g, 4 g and zero in a kilogram potting soil) with 15 repetitions was considered. After ensuring the germination of plants, 7-day irrigation tension was applied to them. It was found out that following the first tension, the effect of zeolite in improving viability and mitigation of drought tension will appear and it is observed that in 20% and 40% Zeolite treatments, the percentage of viability and germination of plants is much more in comparison with control group. Gradually, following applying tensions, the average number of remaining saplings decreased in control treatments. The highest percentage of residual base, the whole plant length, stem fresh weight, and dry weight of zeolite was observed in Cymbopogonolivieri in the treatment of 40%. More traits such as stem length, fresh weight, dry weight and fresh weight roots in the treatment of 40% zeolite in Medicagoscutellata species improved. The highest root weight was observed in Medicago sativa using 40% zeolite. No significant difference was detected in terms of wet root length in three plant species. https://jrwm.ut.ac.ir/article_62881_ab927009d62bb81cf4b90b2b42b43ce3.pdf