Description

This is a time series of needle samples taken at the Flakaliden experimental site between 1987 and 2020. Exceptions are the years 2004 and 2005, when no sampling was carried out due to thinning of the experimental site, and 2016, when no samples remained after the analyses. The needle samples are collected from the Serial branch sampling and consist of C+1-needles (last years needles) which were collected in the autumn. The time series includes four treatments: control (C), solid fertilisation (F), irrigation with liquid fertiliser (IL ) and previously irrigated parcels that started to be irrigated with liquid fertiliser in 2007 (new IL). For the New IL treatment the time series contains needle samples from 2007 to 2020. An overview of the time series for the different treatments is available for download.