Effect of soil moisture content and nitrogen fertilizer on survival, growth and some physiological characteristics of Platycladus orientalis seedlings
Given the important applications of oriental arborvitae (Platycladus orientalis /L./ Franco), we examined the interaction effects of soil moisture content (SMC) and urea fertilizer on survival, growth and some physiological characteristics of seedlings of this species. In this study, 270 uniform ori...
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| Format: | Article |
| Language: | English |
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Czech Academy of Agricultural Sciences
2020-12-01
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| Series: | Journal of Forest Science |
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| Online Access: | https://jfs.agriculturejournals.cz/artkey/jfs-202012-0004_effect-of-soil-moisture-content-and-nitrogen-fertilizer-on-survival-growth-and-some-physiological-characterist.php |
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| author | Alireza Aliarab Elham Okati Vazifekhah Seyed-Ehsan Sadati |
| author_facet | Alireza Aliarab Elham Okati Vazifekhah Seyed-Ehsan Sadati |
| author_sort | Alireza Aliarab |
| collection | DOAJ |
| description | Given the important applications of oriental arborvitae (Platycladus orientalis /L./ Franco), we examined the interaction effects of soil moisture content (SMC) and urea fertilizer on survival, growth and some physiological characteristics of seedlings of this species. In this study, 270 uniform oriental arborvitae seedlings were transplanted in 2 kg containers filled with the top soil of the natural stand in Soorkesh forest reserve. After 2 months, 6 levels of SMC (100%, 75%, 50%, 25%, 15% and 10%) and 3 levels of urea [control: 0, low nitrogen (LN): 75 mg.kg-1, and high nitrogen (HN): 150 mg.kg-1] were used from June till the end of the first growing season in 3 replications and 5 seedlings per replication as subsamples. The results showed that all seedlings survived under SMC above 25% in control and urea fertilizer treatments. However, under 15% and 10% SMC, the seedling survival decreased significantly in control treatment, but adding urea fertilizer significantly increased the survival, especially in HN treatment. Growth and morphological properties of seedlings, including root and shoot length, number of first-order lateral roots and total biomass, showed a significant decrease at 75%. Seedling quality index gradually decreased with SMC reduction, but the addition of urea to the soil significantly increased it under all SMC treatments. The results also indicated that a decrease in SMC significantly decreased relative water content of leaves and total chlorophyll content, and urea fertilizer increased total chlorophyll under all SMC treatments, but it increased relative water content only at 100% to 25%. Moreover, water use efficiency of P. orientalis seedlings significantly increased under low soil moisture treatments, and urea significantly increased it, especially under HN treatment. In conclusion, urea fertilizer, especially in the higher amount (150 mg.kg-1), improved growth and quality of seedlings under different soil moisture conditions, and increased their survival under severe drought. |
| first_indexed | 2024-04-10T08:17:21Z |
| format | Article |
| id | doaj.art-660b93fe806647f39d90bc6882864884 |
| institution | Directory Open Access Journal |
| issn | 1212-4834 1805-935X |
| language | English |
| last_indexed | 2024-04-10T08:17:21Z |
| publishDate | 2020-12-01 |
| publisher | Czech Academy of Agricultural Sciences |
| record_format | Article |
| series | Journal of Forest Science |
| spelling | doaj.art-660b93fe806647f39d90bc68828648842023-02-23T03:43:05ZengCzech Academy of Agricultural SciencesJournal of Forest Science1212-48341805-935X2020-12-01661251152310.17221/34/2020-JFSjfs-202012-0004Effect of soil moisture content and nitrogen fertilizer on survival, growth and some physiological characteristics of Platycladus orientalis seedlingsAlireza Aliarab0Elham Okati Vazifekhah1Seyed-Ehsan Sadati2Department of Silviculture and Forest Ecology, Faculty of Forest Sciences, Gorgan University of Agricultural Sciences and Natural Resources, IranDepartment of Silviculture and Forest Ecology, Faculty of Forest Sciences, Gorgan University of Agricultural Sciences and Natural Resources, IranForest and Rangelands Research Department, Mazandaran Agricultural and Natural Resources Research and Education Center, , AREEO, Sari, IranGiven the important applications of oriental arborvitae (Platycladus orientalis /L./ Franco), we examined the interaction effects of soil moisture content (SMC) and urea fertilizer on survival, growth and some physiological characteristics of seedlings of this species. In this study, 270 uniform oriental arborvitae seedlings were transplanted in 2 kg containers filled with the top soil of the natural stand in Soorkesh forest reserve. After 2 months, 6 levels of SMC (100%, 75%, 50%, 25%, 15% and 10%) and 3 levels of urea [control: 0, low nitrogen (LN): 75 mg.kg-1, and high nitrogen (HN): 150 mg.kg-1] were used from June till the end of the first growing season in 3 replications and 5 seedlings per replication as subsamples. The results showed that all seedlings survived under SMC above 25% in control and urea fertilizer treatments. However, under 15% and 10% SMC, the seedling survival decreased significantly in control treatment, but adding urea fertilizer significantly increased the survival, especially in HN treatment. Growth and morphological properties of seedlings, including root and shoot length, number of first-order lateral roots and total biomass, showed a significant decrease at 75%. Seedling quality index gradually decreased with SMC reduction, but the addition of urea to the soil significantly increased it under all SMC treatments. The results also indicated that a decrease in SMC significantly decreased relative water content of leaves and total chlorophyll content, and urea fertilizer increased total chlorophyll under all SMC treatments, but it increased relative water content only at 100% to 25%. Moreover, water use efficiency of P. orientalis seedlings significantly increased under low soil moisture treatments, and urea significantly increased it, especially under HN treatment. In conclusion, urea fertilizer, especially in the higher amount (150 mg.kg-1), improved growth and quality of seedlings under different soil moisture conditions, and increased their survival under severe drought.https://jfs.agriculturejournals.cz/artkey/jfs-202012-0004_effect-of-soil-moisture-content-and-nitrogen-fertilizer-on-survival-growth-and-some-physiological-characterist.phpsoil moisture contentnitrogen fertilizeroriental arborvitaeseedling qualitywater use efficiencyurea |
| spellingShingle | Alireza Aliarab Elham Okati Vazifekhah Seyed-Ehsan Sadati Effect of soil moisture content and nitrogen fertilizer on survival, growth and some physiological characteristics of Platycladus orientalis seedlings Journal of Forest Science soil moisture content nitrogen fertilizer oriental arborvitae seedling quality water use efficiency urea |
| title | Effect of soil moisture content and nitrogen fertilizer on survival, growth and some physiological characteristics of Platycladus orientalis seedlings |
| title_full | Effect of soil moisture content and nitrogen fertilizer on survival, growth and some physiological characteristics of Platycladus orientalis seedlings |
| title_fullStr | Effect of soil moisture content and nitrogen fertilizer on survival, growth and some physiological characteristics of Platycladus orientalis seedlings |
| title_full_unstemmed | Effect of soil moisture content and nitrogen fertilizer on survival, growth and some physiological characteristics of Platycladus orientalis seedlings |
| title_short | Effect of soil moisture content and nitrogen fertilizer on survival, growth and some physiological characteristics of Platycladus orientalis seedlings |
| title_sort | effect of soil moisture content and nitrogen fertilizer on survival growth and some physiological characteristics of platycladus orientalis seedlings |
| topic | soil moisture content nitrogen fertilizer oriental arborvitae seedling quality water use efficiency urea |
| url | https://jfs.agriculturejournals.cz/artkey/jfs-202012-0004_effect-of-soil-moisture-content-and-nitrogen-fertilizer-on-survival-growth-and-some-physiological-characterist.php |
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