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The effect of hydrogel on one- and two-year-old saplings of English oak Quercus robur L.
- Authors: Bakaneva A.A.1
-
Affiliations:
- Precaspian Agrarian Federal Scientific Center of the Russian Academy of Sciences
- Issue: Vol 18, No 4 (2023): Pesticides. Looking to the future
- Pages: 508-519
- Section: Crop production
- URL: https://agrojournal.rudn.ru/agronomy/article/view/19953
- DOI: https://doi.org/10.22363/2312-797X-2023-18-4-508-519
- EDN: https://elibrary.ru/LEIRPR
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Abstract
Survival rate of English oak ( Quercus robur L.) saplings (one- and two-year-old) on experimental plots under different hydrological conditions (long-interval flooding, short-interval flooding, no flooding) and the effect of hydrogel on the survival of the planted stock were studied. At present, these studies are relevant for the floodplain forest ecosystem of the Volga River, since the forests of this region are experiencing huge natural and anthropogenic loads, therefore, developments are needed for their conservation and restoration. The purpose of the research was to study the method of planting English oak ( Quércus róbur ) with annual and biennial saplings using hydrogel to restore and increase the biodiversity of degraded forest phytocenoses in conditions of the Volga-Akhtuba floodplain in the north of the Astrakhan region. In the work, the following methods were used: soil moisture was determined by the thermostatic-weight method (B.A. Dospekhov); experimental data were processed by the method of dispersion analysis using Microsoft Excel. According to the results of the study, the best survival rate (83 %) was observed in one-year-old saplings of English oak in the variant with using hydrogel in no-flooding site.
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Table 1. Scheme of the experiment for planting English oak seedlings using hydrogel in conditions of Volga‑Akhtuba floodplain, PAFSC RAS, 2022
Planting stock | Planting date |
| Duration of flooding sites | ||||
No flooding | Short‑interval flooding | Long‑interval flooding | |||||
with hydrogel | without hydrogel | with hydrogel | without hydrogel | with hydrogel | without hydrogel | ||
One‑year‑old saplings | 12–19.04. 2021. | 25 | 16 | 16 | 22 | 16 | 16 |
Two‑year‑old saplings | 16.04. 2022. | 30 | 30 | 30 | 30 | 30 | 30 |
Note. data from the second year of the study.
The average reserve of productive moisture, mm, in 0…0.5 m soil layer in the experimental plots according to the variants during the growing season, PAFSC RAS, 2022
Source: made by author
Table 2. The survival rate of year‑old English oak saplings in conditions of the Volga‑Akhtuba floodplain, PAFSC RAS, 2022
Duration of flooding sites1 | Total number of saplings planted in 2021 | Number of survived saplings | ||||||||
October 2021 | October 2022 | |||||||||
with hydrogel2 | without hydrogel2 | with hydrogel | without hydrogel | with hydrogel | without hydrogel | |||||
plants | plants | plants | %3 | plants | %3 | plants | %3 | plants | %3 | |
No flooding | 30 | 30 | 25 | 83 | 16 | 53 | 15 | 50 | 6 | 20 |
Short‑interval flooding | 30 | 30 | 16 | 53 | 22 | 73 | 11 | 37 | 16 | 53 |
Long‑interval flooding | 30 | 30 | 16 | 53 | 16 | 53 | 9 | 30 | 4 | 13 |
Total | 90 | 90 | 57 | 63 | 54 | 60 | 35 | 39 | 26 | 29 |
LSD (05) general | 2.3 | 2.6 | ||||||||
LSD (05) А | 1.7 | 1.5 | ||||||||
LSD (05) В | 1.4 | 1.9 | ||||||||
LSD (05) АВ | 1.7 | 1.9 | ||||||||
Note. 1Factor А, 2 factor В, 3 % from planted stock.
Table 3. The survival rate of two‑year‑old English oak saplings in conditions of the Volga‑Akhtuba floodplain, PAFSC RAS, 2022
Duration of flooding sites | Total number of saplings planted in 2022 | Number of survived saplings, October 2022 | ||||
with hydrogel | without hydrogel | with hydrogel | without hydrogel | |||
plants | plants | plants | % | plants | % | |
No flooding | 30 | 30 | 13 | 44 | 20 | 67 |
Short‑interval flooding | 30 | 30 | 17 | 56 | 3 | 11 |
Long‑interval flooding | 30 | 30 | 3 | 11 | 13 | 44 |
Total | 90 | 90 | 33 | 37 | 36 | 40 |
LSD (05) general |
| 3.0 | ||||
LSD (05) А |
| 1.7 | ||||
LSD (05) В |
| 2.1 | ||||
LSD (05) АВ |
| 2.1 | ||||
Table 4. The survival rate of one‑ and two‑year‑old saplings of English oak in conditions of the Volga‑Akhtuba floodplain, PAFSC RAS, 2022
Planting stock | Planting date | Duration of flooding sites | |||||
No flooding | Short‑interval flooding | Long‑interval flooding | |||||
with hydrogel | without hydrogel | with hydrogel | without hydrogel | with hydrogel | without hydrogel | ||
Number of one‑year‑old saplings | Spring 2021 | 25 | 16 | 16 | 22 | 16 | 16 |
Number of two‑yearold saplings | Spring 2022 | 13 | 20 | 17 | 3 | 3 | 13 |
LSD (05) general | 2.20 | ||||||
LSD (05) А | 1.10 | ||||||
LSD (05) В | 0.90 | ||||||
LSD (05) АВ | 1.27 | ||||||
LSD (05) АС | 1.56 | ||||||
LSD (05) ВС | 1.56 | ||||||
LSD (05) АВС | 1.10 | ||||||
Note. *data for the growing season.
Table 5. Changes in English oak sapling height during the growing season, PAFSC RAS, 2022
Duration of flooding sites | The average height of English oak saplings, m | |||||
Planting | End of the growing season 2021 | End of the growing season 2022 | ||||
with hydrogel | without hydrogel | with hydrogel | without hydrogel | with hydrogel | without hydrogel | |
No flooding | 0.15 | 0.17 | 0,18 | 0,19 | 0,18 | 0,19 |
Short‑interval flooding | 0.17 | 0.16 | 0,18 | 0,17 | 0,18 | 0,17 |
Long‑interval flooding | 0.15 | 0.15 | 0,19 | 0,17 | 0,19 | 0,17 |
LSD (05) general | 0.06 | 0.06 | ||||
LSD (05) А | 0.05 | 0.05 | ||||
LSD (05) В | 0.04 | 0.04 | ||||
LSD (05) АВ | 0.05 | 0.05 | ||||
About the authors
Anna A. Bakaneva
Precaspian Agrarian Federal Scientific Center of the Russian Academy of Sciences
Author for correspondence.
Email: solnce5508@mail.ru
ORCID iD: 0000-0002-2619-8794
SPIN-code: 7306-1060
Junior Researcher, Department of Environmental Management
8 Severny quarter, Solenoye Zaymishche vil., Chernoyarsky district, Astrakhan Region, 416251, Russian FederationReferences
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