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Publications

NIBIOs employees contribute to several hundred scientific articles and research reports every year. You can browse or search in our collection which contains references and links to these publications as well as other research and dissemination activities. The collection is continously updated with new and historical material.

1988

Abstract

Fifty pole stage trees were inoculated with O. polonicum at monthly intervals between May and September. Most infection, measured as the area of sapwood blue-stained, occurred in July and least in May and September. The difference between July, August and September might be explained by the effect of temperature on fungal growth, but in May and June the trees had a higher resistance than expected. Tree resistance was correlated with resinosis. Tree variables not correlated with resistance were DBH, annual ring width, periodic growth, vigor index, or phloem carbohydrate concentration.

Abstract

Iron(III) can minimize the serious interference from copper(II) and nickel(II) on the determination of tellurium by hydride generation/atomic absorption spectrometry. The optimal concentrations were found to be 1 g/l and 2 g/l Fe(III) in 4.0 mol/l HCl in presence of nickel(II) and copper(II), repectively. The signals were only 25% lower in a solution og 1.6 g/l Ni(II) than for a nickel-free solution. For copper(II), reasonable sensitivity was retained in the presence of 100 mg/l Cu(II).