Loss of soil organic matter upon ploughing under a loess soil after several years of conservation tillage

Koch, H.; Stockfisch, Nicol

doi:10.1016/j.still.2005.02.029

Cited by 57 publications

(27 citation statements)

References 36 publications

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“…The increase in C org took place only in the 0-15 cm soil layer, and no differences were reported below 15 cm, which corresponds to our findings. Our results are in line with those of Pekrun and Claupein 2 , Rasmussen 5 , Kladivko 6 and Koch and Stockfisch 7 . Under organic farming conditions, Emmerling 25 reported a relative increase in C org of 7-10% in the surface layer after 10 years of RT, with no differences below the tilled layer.…”

Section: Resultssupporting

confidence: 92%

“…Many authors 2,41,42 argue that periodical use of moldboard ploughing may be inevitable in organic farming to control weed problems. However, high losses of C org have been reported after single-moldboard ploughing in an RT system, proportional to the previous gain under NT or RT in some studies 7,43,44 . In other studies, no changes could be observed in C org after ploughing of NT soils [45][46][47] .…”

Section: Resultsmentioning

confidence: 98%

“…A positive effect on soil organic carbon (C org ) contents in the superficial soil layer has frequently been reported [2][3][4][5][6][7] , whereas the effects on C org in the whole profile are still a matter of controversy 8 . NT and RT cause a stratification of C org and microbial properties in the soil profile 3,6,9,10 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Impact of reduced tillage on soil organic carbon and nutrient budgets under organic farming

Gadermaier

Berner

Fließbach

et al. 2011

Renew. Agric. Food Syst.

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No-tillage (NT) and reduced tillage (RT) systems are well-known management tools for reducing soil erosion and improving soil fertility. NT and RT may improve the environmental and economic performance of organic farming, but they are still not common practice among organic farmers. This paper presents the effects of tillage [RT versus conventional tillage (CT)], fertilization (slurry versus manure compost) and biodynamic preparations (with versus without) on soil fertility indicators such as soil organic carbon (C org ), microbial biomass and microbial activity, soil nutrients and nutrient budgets in an organic farming system during the first six-year crop rotation period of a long-term experiment on a clayey soil in a temperate climate. RT caused stratification of soil organic carbon (C org ), microbial properties and soil nutrients in the soil profile. Under RT, C org in the 0-10 cm soil layer increased from 2.19 to 2.61% (w/w) from 2002 to 2008, whereas it remained constant under CT. In both tillage treatments, C org remained constant in the 10-20 cm soil depth. Microbial biomass C increased by 37% under RT in the 0-10 cm soil depth and microbial activity [dehydrogenase activity (DHA)] was enhanced by 57%. Soil microbial biomass C and DHA in the 10-20 cm soil depth were also higher under RT (+ 10 and + 17%, respectively). Soluble soil P and K were 72 and 40%, respectively, higher in 0-10 cm soil depth under RT when compared with CT. Fertilization showed no effects on the measured soil properties. Biodynamic preparations increased solely the C mic -to-N mic (soil microbial biomass C to soil microbial biomass N) ratio by 7% in the 0-10 cm soil depth. Nutrient budgets for P were balanced in all treatments, but N and K exports were higher under RT compared to CT. We conclude that RT is a suitable method for increasing indicators of soil fertility in organic farming systems. The combined effects of RT and an organic farming system with a diverse, ley-based crop rotation and organic fertilization merit further promotion and it may be considered for supporting actions by the agricultural policy schemes.

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Section: Resultssupporting

confidence: 92%

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Impact of reduced tillage on soil organic carbon and nutrient budgets under organic farming

Gadermaier

Berner

Fließbach

et al. 2011

Renew. Agric. Food Syst.

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show abstract

“…Roldan et al (2005) recorded that no-tillage resulted in soil organic matter increase of up to 33% in the 0-5 cm layer in Mexico. Similarly, Koch and Stockfisch (2006) also reported that conservation tillage concentrated soil organic matter and carbon in the top soil layer (0-10 cm) in Germany.…”

Section: Soil Organic Mattermentioning

confidence: 74%

Soil chemical properties and microbial biomass after 16 years of no-tillage farming on the Loess Plateau, China

et al. 2008

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“…Moreover, during the winter months from November to March, the SOC and total N, accumulated under reduced tillage, were completely lost. Likewise, Koch and Stockfisch (2006) reported that after 7 to 9 years of reduced tillage, one plowing operation resulted in a substantial loss of organic matter.…”

Section: Soc and Total N Stocksmentioning

confidence: 99%

Effects of fertilization and soil management on crop yields and carbon stabilization in soils. A review

Ludwig

Geisseler

Michel

et al. 2010

Agronomy Sust. Developm.

101

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-The study of sustainable land use is complex and long-term experiments are required for a better understanding of the processes of carbon stabilization. Objectives were (i) to describe for four long-term experiments the effects of fertilization and soil management on crop yields and the dynamics of soil organic carbon (SOC) and total N, and (ii) to discuss the usefulness of models for a better understanding of the underlying processes. Data of soil organic carbon and total N of four long-term experiments in Germany and China which studied the effect of fertilization (Bad Lauchstädt, Darmstadt) and tillage (Göttingen, Quzhou) were evaluated and soil organic carbon fractionation was carried out. The Rothamsted Carbon Model was used for a description and prediction of soil organic carbon dynamics as affected by fertilization and tillage in Bad Lauchstädt and Quzhou. The type of fertilizer added at common rates -either mineral N or farmyard manure -affected the crop yields only slightly, with slightly lower yields after manure application compared with mineral N fertilization. For both fertilization trials, manure applications at common rates had beneficial effects on soil organic carbon stocks in the labile pool (turnover time estimated as <10 years) and to a greater extent in the intermediate pool (turnover time estimated to be in the range of 10 to 100 years). A comparison of the effects of conventional tillage, reduced tillage and no-tillage carried out in Göttingen and Quzhou indicated only small differences in crop yields. Reduced tillage in Göttingen resulted in an increased C storage in the surface soil and C was mainly located in the mineral-associated organic matter fraction and in water-stable macro-aggregates (>0.25 mm). For Quzhou, no-tillage and conventional tillage had similar effects on total C stocks, with a greater spatial variability in soil organic carbon stocks in the no-tillage plots. Modeling required site-specific calibrations for the stock of inert organic matter for each of the sites, indicating that not all carbon stabilization processes are included in the model and that application of a model to a new site may also need site-specific adjustments before it can be used for predictions. After site-specific calibration, however, model predictions for the remaining treatments were generally accurate for the fertilization and tillage trials, which emphasizes the importance of temperature, moisture, soil cover and clay content on the decomposition dynamics of soil organic carbon and the significance of amounts and quality of carbon inputs in the soil for maintaining or increasing soil organic carbon stocks in arable soils.soil organic matter / C dynamics / Rothamsted carbon model / tillage / fertilization / soil organic carbon (SOC)

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Loss of soil organic matter upon ploughing under a loess soil after several years of conservation tillage

Cited by 57 publications

References 36 publications

Impact of reduced tillage on soil organic carbon and nutrient budgets under organic farming

Impact of reduced tillage on soil organic carbon and nutrient budgets under organic farming

Soil chemical properties and microbial biomass after 16 years of no-tillage farming on the Loess Plateau, China

Effects of fertilization and soil management on crop yields and carbon stabilization in soils. A review

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