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Micronutrients in temperate forage crops grown in Sweden

species differences and effects of phenological development and soil

Lindström, Bodil (2013). Micronutrients in temperate forage crops grown in Sweden. Diss. (sammanfattning/summary) Uppsala : Sveriges lantbruksuniv., Acta Universitatis agriculturae Sueciae, 1652-6880 ; 2013:3
ISBN 978-91-576-7760-0
[Doctoral thesis]

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Abstract

Forage crops are the most important feed for ruminants and provide energy, fibre and protein as well as essential micronutrients such as cobalt (Co), copper (Cu), iron (Fe),
manganese (Mn), molybdenum (Mo) and zinc (Zn). In this thesis, different aspects of the micronutrient concentrations of forage crops were investigated in temporary grasslands in Sweden. Common and novel forage grasses (cocksfoot, meadow fescue, perennial ryegrass, tall fescue, timothy), legumes (birdsfoot trefoil, red clover, white clover) and forbs (caraway, chicory, ribwort plantain, salad burnet) were grown on contrasting soils in a pot experiment (two soils) and a field experiment (timothy, meadow fescue, red clover, white clover, chicory in mixtures, three sites, two soils in common with the pot experiment). The soils were micronutrient-poor/low pH (granitic, till), micronutrient-rich/high pH (alum shale, till) and the third field site had a low soil pH but average soil micronutrient concentrations granitic/sandstone, postglacial) compared to Swedish arable soils.

It was found that micronutrient concentrations differ between forage species, but that varietal differences are few and small. Legumes and forbs generally had higher Co, Cu, Fe and Zn concentrations compared to grasses. There were few species differences in Mn concentrations whereas plant Mo concentrations was strongly affected by soil pH.
Overall, the plant micronutrient concentrations appeared to be more dependent on the soil pH than on the soil micronutrient concentration (as extracted by EDTA and 7 M
nitric acid).

The micronutrient concentrations of the grass-legume mixture were affected by the differences in micronutrient concentrations between legumes and grasses, as well as by
the botanical composition of the grasses and legumes in the mixture. An increased proportion of red clover was positively correlated to increased concentrations of several
micronutrients in grass-legumes mixtures. The changes in micronutrient concentrations with phenological development at five defined stages were studied in three species. The decline of micronutrient concentrations was largest in timothy, less in perennial ryegrass and least in red clover.
The generally low concentrations found in timothy were largely due to the high DM proportion of micronutrient-poor stems.

It is concluded that of the forage crops, clover-rich swards harvested at an early development stage have higher micronutrient concentrations, although the soil characteristics also have a large impact.

Authors/Creators:Lindström, Bodil
Title:Micronutrients in temperate forage crops grown in Sweden
Subtitle:species differences and effects of phenological development and soil
Series/Journal:Acta Universitatis agriculturae Sueciae (1652-6880)
Year of publishing :18 December 2013
Volume:2013:3
Number of Pages:58
Papers/manuscripts:
NumberReferences
I.Dahlin, A.S., Edwards, A.C., Lindström, B.E.M., Ramezanian, A., Shand, C.A., Walker, R.L., Watson, C.A., Öborn, I. (2012). Revisiting herbage sample collection and preparation procedures to minimise the risks of trace element contamination. European Journal of Agronomy 43, 33-39.
II.Lindström, B.E.M., Frankow-Lindberg, B.E., Dahlin, A.S., Wivstad, M., Watson, C.A. Micronutrient concentrations in relation to phenological development of red clover (Trifolium pratense L.), perennial ryegrass (Lolium perenne L.) and timothy (Phleum pratense L.). Submitted
III.Lindström, B.E.M., Frankow-Lindberg, B.E., Dahlin, A.S., Wivstad, M., Watson, C.A. (2012). Micronutrient concentrations in common and novel forage species and varieties grown on two contrasting soils. Grass and Forage Science, doi: 10.1111/gfs.12006.
IV.Lindström, B.E.M., Frankow-Lindberg, B.E., Dahlin, A.S., Watson, C.A., Wivstad, M. Effect of site and red clover proportion on micronutrient concentrations in forage mixtures. Manuscript
Place of Publication:Uppsala
Publisher:Dept. of Crop Production Ecology, Swedish University of Agricultural Sciences
ISBN for printed version:978-91-576-7760-0
ISSN:1652-6880
Language:English
Publication Type:Doctoral thesis
Full Text Status:Public
Agris subject categories.:F Plant production > F01 Crop husbandry
F Plant production > F61 Plant physiology - Nutrition
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Agricultural Science
Agrovoc terms:feed crops, herbage crops, feed grasses, species, leys, plant nutrition, trace elements, arable soils, nutritional status, sweden
Keywords:clover, cultivars, forbs, grass, legumes, microminerals, organic farming, ruminants, trace elements, ley
URN:NBN:urn:nbn:se:slu:epsilon-e-796
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-796
ID Code:9348
Department:(NL, NJ) > Dept. of Crop Production Ecology
External funders:FORMAS
Deposited By: Bodil Lindström
Deposited On:18 Dec 2012 07:59
Metadata Last Modified:02 Dec 2014 10:54

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