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Carl Johan Westman (email)

Fertilization of Scots pine seedlings with different nitrogen fertilizer

Westman C. J. (1976). Fertilization of Scots pine seedlings with different nitrogen fertilizer. Silva Fennica vol. 10 no. 4 article id 4954. https://doi.org/10.14214/sf.a14800

Abstract

The paper describes an attempt to determine whether ammonium, nitrate and urea nitrogen are bound in peat used as a filling material in containerized seedling production, what is the effect of the nutrients on certain chemical properties in the peat, and what is the effect of the nitrogen fertilizers on the primary growth of containerized (paper-pot VH 608) Scots pine (Pinus sylvestris L.) seedlings in connection with planting out. The seedlings were fertilized with ammonium sulphate, potassium nitrate and urea.

The results show that none of the fertilizers used were bound in the peat. The nitrogen content in the above ground part of the seedlings increased clearly. Fertilization with ammonium sulphate resulted in the greatest increment and this increase appears to be permanent. The wintering process was somewhat delayed by the fertilization. The seedling mortality rate for all the treatments has been quite appreciable. However, fertilization particularly with ammonium sulphate on the poorer of the two sites studied has had a positive effect on seedling survival. Furthermore, it appears that fertilizer treatments have decreased growth after planting, but in the case of ammonium sulphate this decrease has changed into a clear growth increment.

The PDF includes a summary in English.

Original keywords
mänty; istutus; kasvu; taimet; lannoitus; kuolleisuus; typpilannoitus; ammoniumsulfaatti

English keywords
Pinus sylvestris; Scots pine; planting; growth; mortality; seedlings; fertilizing; nitrogen fertilizers; ammonium sulphate

Published in 1976

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Available at https://doi.org/10.14214/sf.a14800 | Download PDF

Creative Commons License CC BY-SA 4.0

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