Nitrogen fertilizer value of cattle manure applied on soils originating from organic and conventional farming systems

Langmeier, M; Frossard, Emmanuel; Kreuzer, Michael; Mäder, Paul; Dubois, David; Oberson, Astrid

doi:10.1051/agro:2002044

Cited by 52 publications

(50 citation statements)

References 28 publications

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“…Th is result was consistent with those of Hadas et al (1996), who found that within a period of 32 wk, net N mineralization from cattle manure was not higher in soils with long-term use of cattle manure amendments compared with soils that had not been amended for 30 yr. Th ey argued that the decomposition of recently added organic matter may be independent of the initial soil microbial biomass and activity. Similarly, Langmeier et al (2002) found no consistent eff ect of fertilization history (organic vs. conventional) on plant N uptake from recently added cattle feces and slurry, although the soils used diff ered greatly in soil microbial biomass. In both studies, diff erences in net N mineralization were mostly due to diff erences in N mineralization from previously existing SOM.…”

Section: Effects Of Amendment History On Decomposition Of Recently Admentioning

confidence: 93%

“…While many studies confi rm the concept that amendment history eff ects on the decomposition of recently applied amendments can be neglected (Fauci and Dick, 1994;Hadas et al, 1996;Langmeier et al, 2002;Stark et al, 2008), some do not. For example, Fließbach et al (2000) reported higher C mineralization from recently added straw in "biodynamically" managed soil compared with conventionally managed soil (unamended, mineral fertilization, or mineral + organic fertilization).…”

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confidence: 99%

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Influence of Soil Amendment History on Decomposition of Recently Applied Organic Amendments

Nett

Ruppel

Ruehlmann

et al. 2012

Soil Science Society of America Journal

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Predicting N mineralization from organic amendments is necessary to match crop N demand with N availability, especially in organic farming systems, which mainly rely on organic fertilization. Because decomposition is a multilevel process infl uenced by numerous factors, however, the prediction of N availability to plants is oft en inaccurate. Soil microorganisms play a key role in the turnover of organic matter, which they decompose to obtain mineral nutrients and energy. Apart from abiotic factors such as soil temperature, soil water content, and soil aeration, the properties of the organic amendment itself aff ect the decomposition process, partly via their eff ect on the soil microfl ora. Relationships between the chemical composition of organic amendments and their C and N Long-term use of organic soil amendments, compared with unamended or mineral fertilized soils, can change soil organic matter content, microbial biomass content, the microbial community structure, and the activity of enzymes involved in organic matter decomposition. It is not clear, however, whether long-term use of organic amendments, by means of these changes, leads to modifi ed decomposition rates of newly added organic amendments. Therefore, this study was used to test the hypothesis that amendment history has an infl uence only on the decomposition of recalcitrant organic amendments and not on less recalcitrant organic amendments. Soils used for experimentation were taken from a fi eld experiment where contrasting organic amendment regimes of farmyard manure, pine (Pinus sylvestris L.) bark, vegetable crop residues, and an unamended control had been applied for 35 yr. In a full factorial, laboratory-based incubation experiment, each soil was treated with each of these amendments and net C and N mineralization and microbial biomass C contents were monitored during a 147-d period. Collected data were then used to estimate gross turnover rates of newly added amendments with a modeling approach based on the soil organic matter module of the Daisy model. The modeling results suggested that the turnover of farmyard manure and pine bark, not however of crop residues, should be simulated in consideration of an amendment history effect. In contrast, the results of the ANOVA indicated that amendment history had an insignifi cant effect on net C and N mineralization from recently applied amendment. We concluded that the effects of amendment history on gross turnover rates of recently added organic amendments may depend on the type of amendment but that these effects on net C and N mineralization are minor in magnitude and hence irrelevant to N fertilization practice. Leif

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Section: Effects Of Amendment History On Decomposition Of Recently Admentioning

confidence: 93%

mentioning

confidence: 99%

Influence of Soil Amendment History on Decomposition of Recently Applied Organic Amendments

Nett

Ruppel

Ruehlmann

et al. 2012

Soil Science Society of America Journal

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“…The rationale behind this is that the MB, microbial community structure and microbial activity of soil adjust quickly to newly added organic matter, so that initial properties of the soil microflora can be ignored in the prediction of short-term N mineralization from organic fertilizer. Most published studies on this issue support this theory (e.g., Fauci and Dick, 1994;Hadas et al 1996;Langmeier et al 2002;Stark et al 2008), although others have found an effect of long-term fertilization history on C mineralization (Fliessbach et al 2000) or N mineralization (Mallory and Griffin 2007) from newly added organic matter.…”

Section: Introductionmentioning

confidence: 97%

Does long-term farmyard manure fertilization affect short-term nitrogen mineralization from farmyard manure?

et al. 2009

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One of the challenges in organic farming systems is to match nitrogen (N) mineralization from organic fertilizers and crop demand for N. The mineralization rate of organic N is mainly determined by the chemical composition of the organic matter being decomposed and the activity of the soil microflora. It has been shown that long-term organic fertilization can affect soil microbial biomass (MB), the microbial community structure, and the activity of enzymes involved in the decomposition of organic matter, but whether this has an impact on shortterm N mineralization from recently applied organic substances is not yet clear. Here, we sampled soils from a long-term field experiment, which had either not been fertilized, or fertilized with 30 or 60 t ha −1 year −1 of farmyard manure (FYM) since 1989. These soil samples were used in a 10-week pot experiment with or without addition of FYM before starting (recent fertilization). At the start and end of this experiment, soil MB, microbial basal respiration, total plant N, and mineral soil N content were measured, and a simplified N balance was calculated.Although the different treatments used in the long-term experiment induced significant differences in soil MB, as well as total soil C and N contents, the total N mineralization from FYM was not significantly affected by soil fertilization history. The amount of N released from FYM and not immobilized by soil microflora was about twice as high in the soil that had been fertilized with 60 t ha −1 year −1 of FYM as compared with the non-fertilized soil (p<0.05).

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“…Organic farming methods tend to increase soil organic matter and thus enhance soil fertility (Langmeier et al, 2002;Mäder et al, 2002), making it less dependent on external inputs. Organic farming may also provide ecosystem services, increase biodiversity and have a positive impact on the landscape (Letourneau and Bothwell, 2008;Norton et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Conventionalisation of organic farming practices: from structural criteria towards an assessment based on organic principles. A review

Darnhofer¹,

Lindenthal²,

Bartel-Kratochvil³

et al. 2010

Agron. Sustain. Dev.

260

182

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-Organic farming is widely perceived as being more environmentally friendly than conventional farming. As a form of sustainable agriculture, it receives substantial support from policy for its contribution to environmental protection as well as the provision of amenities such as biodiversity and cultural landscapes. Consumers are attracted to organic foods as they are produced without synthetic chemicals and comply with higher animal welfare standards. Although organic farming certainly has the potential to fulfil these expectations, studies have shown that some certified organic farms do not. Their practices comply with the regulations, but not with the principles of organic farming. This trend has been called 'conventionalisation' of organic farming. In this paper we review the studies that discuss the conventionalisation of organic farming, focusing on the farm level and on evidence from Europe. We argue that to strengthen organic farming's transformative potential, the debate must move beyond its focus on the bifurcation between artisanal and conventionalised organic farms, so as to capture the full range of empirical heterogeneity. Our core argument is that to adequately understand the dynamics within organic farming and their potential impact on the ability of organic farming to fulfil the expectations of consumers and policy-makers, it is not sufficient to focus on structural changes. Instead, we need to assess whether or not the observed changes comply with the principles and values that are the fundament of organic farming. organic agriculture / conventionalisation debate / Europe / plant production / animal husbandry

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Nitrogen fertilizer value of cattle manure applied on soils originating from organic and conventional farming systems

Cited by 52 publications

References 28 publications

Influence of Soil Amendment History on Decomposition of Recently Applied Organic Amendments

Influence of Soil Amendment History on Decomposition of Recently Applied Organic Amendments

Does long-term farmyard manure fertilization affect short-term nitrogen mineralization from farmyard manure?

Conventionalisation of organic farming practices: from structural criteria towards an assessment based on organic principles. A review

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