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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 24, Number 1 (1973) → Phosphorus Stimulates Growth Of Yellow Birch Seedlings

Phosphorus Stimulates Growth Of Yellow Birch Seedlings

During the fall of 1970, seeds from a yellow birch (Betula alleghaniensis Britton) were collected, dried, and placed in a cold storage room for dry stratification. In February 1971, seeds were sown in greenhouse flats containing a mixture of potting soil and placed in a greenhouse to germinate. Germination began in about 12 days. While these seedlings were still in the cotyledon stage, we decided to test their response to applications of phosphorus, potassium, and lime. The first two elements are standard constituents of commercial fertilizers and usually they stimulate growth. Lime was used in the experiment because many podzol soils in northern regions are believed to have toxic concentrations of aluminum and manganese in the subsoil and are often deficient in calcium .


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Author(s): Peter R. Hannah

Publication: Tree Planters' Notes - Volume 24, Number 1 (1973)

Volume: 24

Number: 1