Effects of nitrogen on growth properties and phenology of silver birch (Betula pendula Roth)

Autor:	E. Kula, A. Pešlová, P. Martinek
Jazyk:	angličtina
Rok vydání:	2012
Předmět:	nitrogen silver birch stress phenology of budbreak leaf-fall frost heaving Forestry SD1-669.5
Zdroj:	Journal of Forest Science, Vol 58, Iss 9, Pp 391-399 (2012)
Druh dokumentu:	article
ISSN:	1212-4834 1805-935X
DOI:	10.17221/109/2011-JFS
Popis:	Effects of stress caused by differentiated inputs of nitrogen after the application of ammonium nitrate (NH4NO3) on silver birch (Betula pendula Roth) were monitored in a greenhouse. The applied ammonium nitrate did not affect pH values but increased differently the content of nitrogen in soil and leaves. With increased inputs of nitrogen the height and diameter increment of birch also decreased, budbreak was delayed and the autumn leaf-fall slowed down. Frost heaving of shoots occurred particularly in the lower half of the birch stem. With the increasing content of nitrogen in leaves the content of phosphorus decreased and the level of potassium increased.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/67fc98acabee40abb1eab80f0fe2bcf4 Zobrazit plný text záznamu View record in DOAJ