Comparative characteristics of planting material of silver birch grown from seeds of autumn and spring sowing
- Authors: Kabanova S.A.1, Kabanov A.N.1, Danchenko M.A.2, Kochegarov I.S.1
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Affiliations:
- Kazakh Research Institute of Forestry and Agroforestry
- Tomsk State University
- Issue: Vol 17, No 1 (2022)
- Pages: 90-103
- Section: Protective afforestation
- URL: https://journals.rcsi.science/2312-797X/article/view/315653
- DOI: https://doi.org/10.22363/2312-797X-2022-17-1-90-103
- ID: 315653
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Full Text
Abstract
Annual seedlings of silver birch ( Betula pendula Roth.), grown from seeds of autumn and spring sowing period, were analyzed. Planting material was kept in protected ground. Before sowing, various growth substances were incorporated into the soil - mineral and organic fertilizers, forest soil. It was revealed that autumn sowing increased the height of seedlings 1.03…1.66-fold in the variants compared to the control, except for the variants with the use of nitrogen and phosphorus fertilizers, where the largest number of plants per unit area was observed. In the variants with Humatophosphate, boric acid, Trichocin, humus and forest soil, from 60 to 100 % of seedlings reached standard values in a year. A similar experiment with the same growth substances, but spring sowing of seeds, showed a significant lag in seedling growth. The use of nitrogen fertilizer in spring, in contrast to the autumn period, had a positive effect on plant height, annual seedlings had the highest height in the experiment - 14.1 cm. Seedlings in variants with humus and forest soil also had good indicators. All variants overtook the control seedlings in height by 1.06…2.68 times. Therefore, the time of sowing seeds is important - all indicators of autumn seedlings significantly exceed the similar ones of spring seedlings. This fact is explained by several reasons: during the autumn period, the seeds are sown freshly harvested, they undergo pre-sowing preparation (snowing and stratification) in natural conditions, the seeds are not stored, in case of violation of which the seeds significantly lose their germination capacity. In addition, the seeds begin to germinate and shoots begin to grow much earlier than if they were sown in the spring. Shoots are not exposed to late spring frosts, as they are protected by covering material.
About the authors
Svetlana A. Kabanova
Kazakh Research Institute of Forestry and Agroforestry
Email: kabanova.05@mail.ru
ORCID iD: 0000-0002-3117-7381
Candidate of Biological Sciences, Associate Professor, Head of the Department of Reforestation and Afforestation
58 Kirova st., Shchuchinsk, 021704, Republic of KazakhstanAndrey N. Kabanov
Kazakh Research Institute of Forestry and Agroforestry
Email: 7058613132@mail.ru
ORCID iD: 0000-0002-5479-3689
Postgraduate Student, Senior Researcher
58 Kirova st., Shchuchinsk, 021704, Republic of KazakhstanMatvey A. Danchenko
Tomsk State University
Email: mtd2005@sibmail.com
ORCID iD: 0000-0002-5974-9556
Candidate of Geographical Sciences, Associate Professor, Institute of Biology
36 Lenina ave., Tomsk, 634050, Russian FederationIgor S. Kochegarov
Kazakh Research Institute of Forestry and Agroforestry
Author for correspondence.
Email: garik_0188@mail.ru
ORCID iD: 0000-0003-1185-5218
Master Student, Junior Researcher
58 Kirova st., Shchuchinsk, 021704, Republic of KazakhstanReferences
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