Die Molybdänversorgung der Thüringer Böden und der Einfluß einer Molybdändüngung auf Ertrag, Rohprotein- und Mineralstoffgehalt von Luzerne

Müller, Karl-Heinz; Wuth, E.; Witter, Bodo; Ebeling, Richard; Bergmann, Werner

doi:10.1080/03650346409414111

Cited by 3 publications

(2 citation statements)

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“…To account for pH dependence of anion availability, it is suggested to calculate an availability parameter that considers both ion concentrations and pH values (Saarela and Sippola 1990). Müller et al (1964) established the so-called Mo soil number (= pH + 0.01 × Mo ox (ng·g -1 )) to predict availability of Mo in arable soils. This index, however, was not suitable for the calculation of needle contents at the forest sites, neither based on pH(H 2 O) nor on pH(CaCl 2 ).…”

Section: Molybdenum In Needlesmentioning

confidence: 99%

Molybdenum at German Norway spruce sites: contents and mobility

Lang¹,

Kaupenjohann²

2000

Can. J. For. Res.

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Molybdenum plays an important role in the nitrogen turnover of ecosystems. However, very little is known about Mo availability in forest soils. We measured the oxalate-extractable Mo concentrations of acid forest soils, the Mo, nitrate, phosphate, and sulfate fluxes from the organic forest floor into the mineral soil using resin tubes and the Mo concentrations of the tree needles at 28 different Norway spruce (Picea abies (L.) Karst.) sites in southern Germany. The supply of oxalate-extractable Mo varied from 51 to 3400 g·ha -1 , with the lowest values occurring in sandstone-derived soils (370 ± 212 g·ha -1 ; mean ± SD). Molybdenum concentrations of current-year needles were in the range of 5 to 48 ng·g -1 . The Mo needle concentrations and oxalate-extractable Mo of soils did not correlate. However, Mo fluxes (6-60 g·ha -1 ·a -1 ) from the organic forest floor into the mineral soils were correlated to needle concentrations and to the NO 3 fluxes. We conclude that Mo turnover within forest ecosystems is governed by Mo plant availability of mineral soils as well as by plant Mo uptake. In addition, Mo cycling strongly affects Mo distribution within soil profiles and Mo fluxes out of the organic layer.

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Section: Molybdenum In Needlesmentioning

confidence: 99%

Molybdenum at German Norway spruce sites: contents and mobility

Lang¹,

Kaupenjohann²

2000

Can. J. For. Res.

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“…These contents were evaluated as a function of the pH value and the geological origin of the soil. Reisenauer (1956), Trobisch (1962), Müller et al (1964), and Schnorr and Bergmann (1968) proved that there is a well-established negative correlation between pH value and "available" molybdenum content in the soil of several geological origins (Michael and Trobisch 1961, Podlesak 1983, Grün et al 1989.…”

Section: Floramentioning

confidence: 99%