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Uptake of nutrients following fertilization of sitka spruce on deep peat in Northern Ireland
Author(s) -
Dickson D. A.
Publication year - 1969
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.2740200713
Subject(s) - nutrient , peat , growing season , sowing , nitrogen , human fertilization , potassium , phosphate , agronomy , acre , phosphorus , annual growth % , biology , environmental science , botany , zoology , horticulture , chemistry , ecology , biochemistry , organic chemistry
The effects are described of broadcast application of mineral phosphate at rates from 0–400 units† P 2 O 5 per acre and top‐dressing treatments with nitrogen and potassium at rates up to 30 units N and 180 units K 2 O per acre on the growth and nutrient uptake of newly planted Sitka spruce on deep oligotrophic peat in western Northern Ireland. Rate of tree growth and P uptake increased progressively over four years with increasing phosphate application. Applied K appreciably increased rate of growth, length of growing season and K uptake, but tree response decreased in the fifth season after application. Nitrogen application has had little effect except in the year of planting. Levels of N and K in Sitka foliage at the end of the first growing season were very much higher than in subsequent years.