Uusia menetelmiä maaperästä vapautuvan typen määrän arviointiin

Translated title of the contribution: New methods for estimating nitrogen mineralization from soil

Ossi Kinnunen, Tuomas J Mattila, Jukka Aaro Rajala

Research output: Book/ReportCommissioned reportProfessional

Abstract

A considerable share of plant nitrogen uptake originates from the decomposition of soil organic matter and plant residues. Traditionally these have been taken into account in fertilizer planning by having recommended nitrogen levels for various classes of soil organic matter. However the amount of nitrogen mineralization depends also on overall soil health and microbial activity. If these could be measured more accurately, fertilizer recommendations could be tailored at field level.

The report describes new methods for estimating nitrogen mineralization from soil and presents measurement results from 24 test fields for a three year period. The report has two sections, the first one is a literature survey on the estimation methods and the second is an evaluation of the usefulness of the methods. Finally recommendations on the use of the methods for fertilizer planning are presented.
Translated title of the contributionNew methods for estimating nitrogen mineralization from soil
Original languageFinnish
Place of PublicationMikkeli
PublisherRuralia-instituutti
Number of pages31
ISBN (Electronic)978-951-51-3768-5
Publication statusPublished - 2018
MoE publication typeD4 Published development or research report or study

Publication series

NameRaportteja
PublisherHelsingin yliopisto Ruralia-instituutti
No.188
ISSN (Electronic)1796-0630

Fields of Science

  • 4111 Agronomy

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