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Micronutrients in cereal crops

impact of nutrient management and soil properties

Hamnér, Karin (2016). Micronutrients in cereal crops. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2016:51
ISBN 978-91-576-8604-6
eISBN 978-91-576-8605-3
[Doctoral thesis]

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Abstract

Seven elements essential for plants are defined as micronutrients: boron (B), copper (Cu), iron (Fe), manganese (Mn), molybdenum (Mo), nickel (Ni) and zinc (Zn). Deficiency of these nutrients can cause yield losses in crops and impaired crop quality. The overall aim of this thesis work was to increase the knowledge how micronutrients in Swedish cereal crops are affected by nutrient management and soil properties in order to improve crop status and avoid yield losses. Data from long term and short term Swedish field trials and a Swedish monitoring programme were evaluated to examine impacts of nutrient management and soil properties on crop accumulation. In addition, soil depletion was quantified and methods for prediction of micronutrient availability in soil were assessed.

Although crop production solely with mineral fertilizers may result in depletion of micronutrients in arable soil, results showed that depletion rate is slow and difficult to detect, even over decades. Repeated applications of organic fertilizers caused micronutrient accumulation in soil, but generally did not result in increased micronutrient concentrations in cereal crops. Instead, soil properties affecting micronutrient availability were of greater importance for crop accumulation.

High nitrogen (N) fertilization rates resulted in increased concentrations of most micronutrients in winter wheat, whereas the micronutrient to N ratio generally decreased. Accumulation of micronutrients during crop growth differed from N uptake patterns, possibly due to differing availability in soil. Nitrogen fertilization rate had no or minor effects on the accumulation dynamics or translocation from shoot to grain of micronutrients, except for Fe.

Easily accessible data such as total micronutrient concentration in soil in combination with pH or analysis of grain concentrations can be useful tools for estimation of micronutrient availability in soils. New methods of soil analysis, such as diffusive gradient in thin films (DGT) also showed promising results in predicting Cu uptake in wheat.

The results presented in this thesis can be useful in identification of fields with an elevated risk of micronutrient deficiency in cereal crops.

Authors/Creators:Hamnér, Karin
Title:Micronutrients in cereal crops
Subtitle:impact of nutrient management and soil properties
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :2016
Depositing date:28 April 2016
Volume:2016:51
Number of Pages:68
Papers/manuscripts:
NumberReferences
IKirchmann, H., Schön, M., Börjesson, G., Hamnér, K. & Kätterer, T. (2013). Properties of soils in the Swedish long-term fertility experiments: VII. Changes in topsoil and upper subsoil at Örja and Fors after 50 years of nitrogen fertilization and manure application. Acta Agriculturae Scandinavica. Section B - Soil and Plant Sciences 63, 25-36.
IIHamnér, K., Eriksson, J. & Kirchmann, H. (2013). Nickel in Swedish soils and cereal grain in relation to soil properties, fertilization and seed quality. Acta Agriculturae Scandinavica. Section B - Soil and Plant Sciences 63, 712-722.
IIIHamnér, K.& Kirchmann, H. (2015). Trace element concentrations in cereal grain of long-term field trials with organic fertilizers in Sweden. Nutrient Cycling in Agroecosystems 103, 347-358.
IVHamnér, K., Weih, M., Eriksson, J. & Kirchmann, H. Macro- and micronutrient accumulation during growth of winter wheat as influenced by nitrogen supply. Submitted manuscript.
VHamnér, K., Andersson, M., Weih, M., Eriksson, J. & Kirchmann, H. Usefulness of soil and grain analyses for assessment of copper deficiency in winter wheat. Manuscript.
Place of Publication:Uppsala
Publisher:Department of Soil and Environment, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-8604-6
ISBN for electronic version:978-91-576-8605-3
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F04 Fertilizing
P Natural resources > P35 Soil fertility
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Soil Science
Agrovoc terms:cereal crops, triticum aestivum, winter wheat, hordeum vulgare, spring crops, avena sativa, arable soils, soil properties, trace elements, nutrient availability, organic fertilizers, nitrogen, deficiencies, soil analysis, field experimentation, sweden
Keywords:trace elements, nutrient accumulation, wheat, soil extraction, organic fertilizer, nitrogen, deficiency
URN:NBN:urn:nbn:se:slu:epsilon-e-3406
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3406
ID Code:13309
Faculty:NJ - Fakulteten för naturresurser och jordbruksvetenskap
Department:(NL, NJ) > Dept. of Soil and Environment
(S) > Dept. of Soil and Environment
External funders:Stiftelsen Lantbruksforskning
Deposited By: Karin Hamnér
Deposited On:28 Apr 2016 12:08
Metadata Last Modified:28 Apr 2016 12:08

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