The use of biostimulants containing Ascophyllum nodosum (L.) Le Jolis algal extract in the cultivation and protection of English oak Quercus robur L. seedlings in forest nurseries
| Autor: | Tkaczyk, Miłosz, Szmidla, Hanna, Sikora, Katarzyna |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| DOI: | 10.26202/sylwan.2022032 |
| Popis: | Forests in Europe cover an area of 158 million hectares. To preserve them permanently, it is necessary to provide high−quality planting material for renewal and reforestation. With the ever−decreasing number of plant protection products approved in the European Union, searching for alternative methods to improve the condition and development of seedlings in forest nurseries is becoming increasingly popular. One such alternative may be preparations called plant growth and development regulators, or biostimulants. The aim of this study was to evaluate the effect of two biostimulants containing Ascophyllum nodosum L. algal extract on the growth and development of pedunculate oak Quercus robur L. seedlings. Another goal was to test the preparations in terms of improving resistance to oak powdery mildew Erysiphe alphitoides (Griffon Maubl.) U. Braun S. Takam infection. These preparations were used in situations where the plants were subjected to severe stress – undercutting of the root systems, a procedure frequently used in forest nurseries. The research was conducted, in parallel, in two forest nurseries in east−central Poland. Both forest nurseries were sprayed twice, fourteen days apart. After two months, 50 seedlings from each variant were collected and the biometric parameters were evaluated: the length of the aerial part, the length of the root systems and the diameter of the root collar. The degree of oak leaf powdery mildew infestation was also compared. The results showed statistically significant differences in the length of the root systems. The seedlings in treatment plots had better developed root system than those in control plots. The other parameters also differed from the control variant, but these differences were not statistically significant. Despite the positive response of the plant to growth, the influence of the biostimulants used on the degree of infection of the oak seedlings by the fungus emE. alphitoides/em could not be confirmed. Sylwan 166 (4): 244-252 |
| Databáze: | OpenAIRE |
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