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Effect of Irrigation Intervals and Foliar Application of
Boron and Selenium on Growth and
Chemical Composition of Tipuana speciosa Benth
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Abstract: A pot experiment was conducted at the Experimental Farm of Timber Trees and Forestry Research
Department, Horticulture Research Institute, Agricultural Research Centre, Giza, Egypt during two successive
seasons (2018/2019 and 2019/2020) to study the effect of application of different concentrations of boron
and selenium either individually or as a mixture on growth parameters and chemicals composition of
Tipuana speciosa seedlings grown under different irrigation intervals. Results showed that, increasing
irrigation interval from 4 to 16 days caused a significant decrease in all growth characters, (seedling height, stem
diameter, fresh and dry weights of shoots and roots) except root length which is the longest with prolonged
interval. Also, N, P, K concentrations and chlorophylls contents decreased while, the contents of total sugars
and proline increased with prolonged interval as well as Na+ and Cl %. On the other hand, results revealed that -
application of (B and/ or Se) significantly increased all growth parameters under investigation as well as
enhanced N, P, K, chlorophylls, sugars and proline contents with decreasing of Na+ and Cl levels. From the -
current study it can be concluded that the best results referred to spraying the plants with B 4.0 mg/l plus Se
4.0mg/l with prolonged irrigation to counteract the injurious of drought stress on Tipuana speciosa seedlings
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| Publication year |
2021
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| Pages |
23-33
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| Organization Name |
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| Author(s) from ARC |
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| Publication Type |
Journal
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