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Characteristics of spring barley varieties for organic farming. Nutrient acquisition and crop performance

Nielsen, Dr. Niels Erik; Thomsen, Senior scientist Ingrid Kaag and Berntsen, Scientist Jørgen (2003) Characteristics of spring barley varieties for organic farming. Nutrient acquisition and crop performance. [Næringsstofoptagelse og afgrøde-performance.] Working paper, Department of Agricultural Sciences, The Royal Veterinary and Agricultural University. [Unpublished]

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Summary

It appears that the growth of barley seedlings during spring is restricted by moderate internal deficiency of phosphorus (P) and potassium (K) in most cases. This agrees with the well-known increases of growth and grain yields if P and K fertilizer placement is used in spring barley growing.
It is also evident from our earlier work that barley cultivars may differ in the P acquisition from soil (Gahoonia and Nielsen, 2004; Gahoonia and Nielsen, 2003). The existence of cereal varieties differing in the efficiency in P uptake from soil suggests that more nutrient efficient varieties can be identified among the existing varieties.
The aim of this work was to study differences between selected barley cultivars in their soil-P and soil-K acquisition to find indication of moderate P and K deficiency in spring barley seedling grown under organic farming conditions at various soil fertility levels.


EPrint Type:Working paper
Subjects: Crop husbandry > Production systems > Cereals, pulses and oilseeds
Research affiliation: Denmark > DARCOF II (2000-2005) > VI.2 (BAR_OF) Characteristics of spring barley varieties for organic farming
Deposited By: Thomsen, Senior scientist Ingrid Kaag
ID Code:1453
Deposited On:07 Oct 2003
Last Modified:12 Apr 2010 07:28
Document Language:English
Status:Unpublished
Refereed:Not peer-reviewed

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