Shahram Banedjschafie; Mohammad Khosroshahi; Leila Kashi Zenouzi; Aliashraf Jafari
Volume 28, Issue 1 , April 2021, , Pages 106-117
Abstract
To replace oil mulches, this study examined the effect of degradable non-oil mulch under the brand name Nucleus (MA-19). This research assumed that the application of the mentioned mulch in biological stabilization projects has no adverse effects on seed germination and seedling growth. ...
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To replace oil mulches, this study examined the effect of degradable non-oil mulch under the brand name Nucleus (MA-19). This research assumed that the application of the mentioned mulch in biological stabilization projects has no adverse effects on seed germination and seedling growth. The effect of mulch was studied on the establishment of Haloxylon persicum and Nitraria schoberii in a pot experiment in weather conditions of Research Institute of Forests and Rangeland in Tehran, Iran in 2017-2019. Before the experiment, the seed germination test was made to ensure seeds which having standard germination. After determining the germination percentage of seeds (85-90%), seeds were planted in the greenhouse. Then, the soil surface of the pots was sprayed with mulch for comparison with the control. On the other hand, in potting experiments, which were in the form of planting seedlings, after placing the seedlings in the pot, the soil surface was sprayed with the mentioned mulch. The irrigation of the pots was uniform and equal to the field capacity of the soil and based on the soil moisture curve, which was done only once a month, depending on the weather conditions and temperature. Statistical test and comparison of means according to t-test results showed that mulch treatment did not have any negative effects on germination, viability, height, and diameter of seedlings, and in this regard, used mulch behaves as a control treatment (without mulch).
Ali Jahani; Vahid Etemad; Mohammad Doolati; Nazi Avani
Volume 18, Issue 3 , September 2011, , Pages 463-473
Abstract
Production of native and non native species in the nursurey is considered as one of the raw materials for reforestation in arid regions. Two important factors affecting the seedling production in the nursery are seed density and seed planting depth which extensive studies have been done in this area. ...
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Production of native and non native species in the nursurey is considered as one of the raw materials for reforestation in arid regions. Two important factors affecting the seedling production in the nursery are seed density and seed planting depth which extensive studies have been done in this area. Therefore in this research the effect of seed density and planting depth on height, diameter growth and viability of H. persicum have been investigated. Haloxylon plantations of Hossein Abad in Qom province with an area of 3180 hectares, is located 30 km south-east of Qom city. Planting depth in four levels of 1, 2, 3 and 4 cm and seed density in five levels of 100, 200, 300, 400 and 500 seeds per 1000 m2were measured. All data were analyzed and the results showed that planting depth of 1 cm had the best results with regard to the basal diameter, height growth and viability percentage so is recommended for reforestration. Planting density of 200 seeds per 1000 m2was also identified suitable for afforestation.
Hamid reza Naseri; Hosein Azarnivand; Mahdi Ghorbani; Zahra Mehrabanfar
Volume 15, Issue 1 , January 2008, , Pages 59-68
Abstract
This research was done in order to investigate the seed age effects (longevity) on germination of some sagebrush of species. East Azerbaijan was chosen as the collection sites and seeds of four species such as Artemisia fragrans, A. spicigera, A. campestris and A. vulgaris were collected from these sites. ...
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This research was done in order to investigate the seed age effects (longevity) on germination of some sagebrush of species. East Azerbaijan was chosen as the collection sites and seeds of four species such as Artemisia fragrans, A. spicigera, A. campestris and A. vulgaris were collected from these sites. Seed germination of these species was tested in the spring of the three following years and the data analyzed statistically. Results showed that seed ages have positive effects on the viability and germination of all species under study.. Minimum and maximum changes in seed germination belonged to Artemisia vulgaris and Artemisia spicigera respectively.