Ertragsentwicklung im Dauerversuch <i>Ewiger Roggenbau</i> Halle nach den 1990 vorgenommenen Umstellungen in der Düngung

Garz, J.; Stumpe, Hermann; Schliephake, Wilfried; Hagedorn, E.

doi:10.1002/jpln.1996.3581590410

Cited by 8 publications

(9 citation statements)

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“…(1999). The soil is a Haplic Phaeozem derived from sandy loess, with a particle‐size distribution of 70% sand, 20% silt and 10% clay (Garz et al ., 1996). The field trial was established in 1878 and was continuously cropped with rye under varied fertilizer treatments until 1961.…”

Section: Methodsmentioning

confidence: 99%

“…The mean annual precipitation is 465 mm and the mean annual temperature is 9.2 C. The experimental site and the field management are described in detail by Merbach et al (1999). The soil is a Haplic Phaeozem derived from sandy loess, with a particle-size distribution of 70% sand, 20% silt and 10% clay (Garz et al, 1996). The field trial was established in 1878 and was continuously cropped with rye under varied fertilizer treatments until 1961.…”

Section: Site and Soil Samplingmentioning

confidence: 99%

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Stabilization of carbon from maize in a sandy soil in a long‐term experiment

Ludwig

John

Ellerbrock³

et al. 2003

European J Soil Science

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Summary The sequestration of carbon (C) in soil is not completely understood, and quantitative information about the amounts of organic carbon in the various fractions and their rates of turnover could improve understanding. We aimed (i) to quantify the amounts of C derived from maize at various depths in the soil in a long‐term field experiment with and without fertilization using 13C/12C analysis, (ii) to model changes in the organic C, and (iii) to compare measured and modelled pools of C. The organic C derived from the maize was measured in soil samples collected to a depth of 65 cm from four plots, two of which had been under continuous maize and two under continuous rye during long‐term field experiments with NPK and without fertilization. The fractionation procedures included particle‐size fractionation and extractions in water and in pyrophosphate solution. We used the Rothamsted Carbon Model to model the dynamics of the carbon from 13C data. The amounts of C derived from maize in the Ap horizon after 39 years of continuous maize cropping were 9.5% of the total organic C (where unfertilized) and 14.0% where NPK had been applied. Fertilization did not affect the residence time of carbon in the soil. The amounts of C derived from maize in water extracts were 21% of the total organic C (where unfertilized) and 22% where NPK had been applied. The extracts that were soluble in pyrophosphate and insoluble in acid were depleted in C from maize (the amounts were 5% and 7% of the total organic C, respectively). The results of the 13C natural abundance technique were used to model the dynamics of the organic C. Both the total organic C and the C derived from maize in the particle‐size fraction 0–63 μm agreed well with the total and maize‐derived sums of the model pools ‘inert organic matter’, ‘humified organic matter’ and ‘microbial biomass’. The model suggested that 64% (unfertilized) or 53% (NPK) of the organic C in the Ap horizon were inert. Only one of three published equations to determine the size of the inert pool agreed well with these model results.

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Section: Methodsmentioning

confidence: 99%

Section: Site and Soil Samplingmentioning

confidence: 99%

Stabilization of carbon from maize in a sandy soil in a long‐term experiment

Ludwig

John

Ellerbrock³

et al. 2003

European J Soil Science

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“…In comparison, N alone led to a significant yield decrease (compared to StI) only after two decades. It is evident that the soil©s capacity to supply plant-available P and K was sufficient for two decades to maintain rye yields equally to the fertilization level of StI (Garz et al, 1996). A further indication for this supposition is the fact that PK fertilization resulted in higher yields than U only after two decades as well.…”

Section: Yields Of Rye Monoculturementioning

confidence: 98%

The influence of fertilization and rotation on soil organic matter and plant yields in the long-termEternal Rye trial in Halle (Saale), Germany

Schmidt¹,

Warnstorff

Dörfel

et al. 2000

J. Plant Nutr. Soil Sci.

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Six forms of fertilizers and three rotations have been examined for 120 years in the ”︁Eternal Rye trial” in Halle (central German arid region, Haplic Phaeozem on sandy loess). Rank analysis, trend analysis and a new component model have been found to be suitable statistical methods to evaluate long‐term results without true replications. In this trial it was shown that mineral fertilization maintains like farmyard manuring the yield potential although at lower content of soil organic matter (SOM). Without fertilization, yield decline was greater with potato and silage maize than winter rye (Secale cereale L.). Deficiencies in N fertilization lead immediately, and in PK supply after more than 20 years, to a significant yield decrease which could be quickly compensated by full fertilization. Rye and maize monocultures also resulted in yield decreases. The establishing of new steady states in the turnover of SOM took about 50 years after changes in fertilization. Contrary to rye monoculture, both silage maize monoculture and potato alternating with winter rye caused considerable decomposition of SOM. According to analytical pyrolysis (Py‐FIMS and Py‐GC/MS), fertilization affects the SOM composition more than rotation. Without fertilization, a higher percentage of thermically stable SOM remained in comparison to the FYM soils. The introduction of potato into the rotation enhanced the content of easily decomposable SOM.

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“…The soil is a Haplic Phaeozem derived from sandy loess. The texture of the soil consists of 70% fine sand, 20% silt, and 10% clay (Garz et al, 1996). The rye was threshed and the straw was ploughed in to a depth of about 25 cm.…”

Section: Site and Soil Samplingmentioning

confidence: 99%

The Origin of Soil Organic C, Dissolved Organic C and Respiration in a Long-Term Maize Experiment in Halle, Germany, Determined by13C Natural Abundance

Flessa¹,

Ludwig

Heil

et al. 2000

J. Plant Nutr. Soil Sci.

160

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For a quantitative analysis of SOC dynamics it is necessary to trace the origins of the soil organic compounds and the pathways of their transformations. We used the 13C isotope to determine the incorporation of maize residues into the soil organic carbon (SOC), to trace the origin of the dissolved organic carbon (DOC), and to quantify the fraction of the maize C in the soil respiration. The maize‐derived SOC was quantified in soil samples collected to a depth of 65 cm from two plots, one ’︁continuous maize’ and the other ’︁continuous rye’ (reference site) from the long‐term field experiment ’︁Ewiger Roggen’ in Halle. This field trial was established in 1878 and was partly changed to a continuous maize cropping system in 1961. Production rates and δ13C of DOC and CO2 were determined for the Ap horizon in incubation experiments with undisturbed soil columns. After 37 years of continuous maize cropping, 15% of the total SOC in the topsoil originated from maize C. The fraction of the maize‐derived C below the ploughed horizon was only 5 to 3%. The total amount of maize C stored in the profile was 9080 kg ha−1 which was equal to about 31% of the estimated total C input via maize residues (roots and stubble). Total leaching of DOC during the incubation period of 16 weeks was 1.1 g m−2 and one third of the DOC derived from maize C. The specific DOC production rate from the maize‐derived SOC was 2.5 times higher than that from the older humus formed by C3 plants. The total CO2‐C emission for 16 weeks was 18 g m−2. Fifty‐eight percent of the soil respiration originated from maize C. The specific CO2 formation from maize‐derived SOC was 8 times higher than that from the older SOC formed by C3 plants. The ratio of DOC production to CO2‐C production was three times smaller for the young, maize‐derived SOC than for the older humus formed by C3 plants.

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Ertragsentwicklung im Dauerversuch Ewiger Roggenbau Halle nach den 1990 vorgenommenen Umstellungen in der Düngung

Cited by 8 publications

References 0 publications

Stabilization of carbon from maize in a sandy soil in a long‐term experiment

Stabilization of carbon from maize in a sandy soil in a long‐term experiment

The influence of fertilization and rotation on soil organic matter and plant yields in the long-termEternal Rye trial in Halle (Saale), Germany

The Origin of Soil Organic C, Dissolved Organic C and Respiration in a Long-Term Maize Experiment in Halle, Germany, Determined by13C Natural Abundance

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