Modelling nitrogen cycles of farming systems as basis of site- and farm-specific nitrogen management

Küstermann, Björn; Christen, Olaf; Hülsbergen, Kurt‐Jürgen

doi:10.1016/j.agee.2009.08.014

Cited by 76 publications

(42 citation statements)

References 34 publications

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“…This balance is calculated as the difference between total imports from abroad and other sectors into agriculture, on the one hand, and total exports of agricultural products, on the other (OSPAR 1995). The calculation of the farm-gate balance is more precise (Gisiger 1957;Oenema et al 2003;van Eerdt and Fong 1998) and usually produces higher surpluses than the soilsurface balance (Bach and Frede 1998;Elsässer 2006;Jacobs 2000;Küstermann et al 2010). For these reasons, we decided to calculate a farm-gate balance for Swiss agriculture according to the OSPAR guidelines.…”

Section: Balancing Methodsmentioning

confidence: 99%

“…The uncertainty of nutrient surpluses is difficult to assess, as calculating nutrient balances is based on widely different types of data (Küstermann et al 2010;Oenema et al 2003): statistical data, standard values, measurement data and estimates. Uncertainty estimation was performed by using a Monte Carlo analysis (Oenema and Heinen 1999).…”

Section: Uncertainty Estimation and Sensitivity Analysismentioning

confidence: 99%

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Nitrogen, phosphorus and potassium balances and cycles of Swiss agriculture from 1975 to 2008

Spiess

2011

Nutr Cycl Agroecosyst

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Section: Balancing Methodsmentioning

confidence: 99%

Section: Uncertainty Estimation and Sensitivity Analysismentioning

confidence: 99%

Nitrogen, phosphorus and potassium balances and cycles of Swiss agriculture from 1975 to 2008

Spiess

2011

Nutr Cycl Agroecosyst

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“…As stated in the model description, the parametrization of the nitrogen utilization rate for easily available fertilizer nitrogen (NUR NFert ) is based mainly on experimental results reported by Leithold (1982), Rauhe et al (1987), andHülsbergen (2003). However, utilization rates of nitrogen appear to be dependent on several factors and thus are highly variable (Küstermann et al 2010;Walther et al 2001). However, Bosshard et al (2009) found an even lower utilization of mineral fertilizer N in the DOK mineral fertilizer treatment than assumed in HU-MOD.…”

Section: Discussionmentioning

confidence: 98%

The humus balance model (HU-MOD): a simple tool for the assessment of management change impact on soil organic matter levels in arable soils

Brock

Hoyer

Leithold

et al. 2012

Nutr Cycl Agroecosyst

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With this paper we present a simple model for the assessment of management impact in arable farming systems on soil organic matter (SOM) levels. The humus balance model (HU-MOD) is designed for application by farmers and extension workers in practice as a tool for management support. To enable practice applicability, HU-MOD bypasses the need for data on soil parameters and can be run with simple management data. HU-MOD is based on a simplified model on carbon and nitrogen pools and fluxes in the soil-plant system. The model proved to be an applicable simple tool for the comparison of management systems in arable farming with regard to the impact on SOM levels. Even though an absolute quantification of SOM level changes is not possible due to the methodical approach bypassing the need for any data on soil parameters, the model may be used to assess a positive or negative impact of a management system or management period compared to a reference and thus may be used to assess the impact of management changes, or to analyse a specific impact for different management periods on a defined spatial unit.

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“…En effet, seule la prévalence de certaines maladies telles que : la fièvre typhoïde, l'intoxication ou gastroentérite, le choléra, les arthroses ou courbatures, la toux ou les troubles respiratoires, le diabète, le cancer, constitue une preuve de connaissance des risques sanitaires par les maraîchers vivant dans la zone d'étude. (Fall et al, 2000 ;Galantini et al, 2006 ;Björn et al, 2010). Toutefois, un apport excessif d'engrais azoté contribue à la détérioration de la qualité des légumes produits (Assogba-Komlan, 2007).…”

Section: Connaissance Ou Non Des Risques Sanitaires Liés à Une Intensunclassified

Relations entre perceptions des producteurs et surfertilisation en maraichage urbain et péri urbain au Bénin

Atidegla¹,

Bonou²,

Agbossou³

2018

Int. J. Bio. Chem. Sci

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RESUMEEn raison du faible niveau de fertilité des terres du littoral et à l'insuffisance des superficies exploitables due surtout à l'accélération de l'urbanisation, les maraîchers de Grand-Popo ont fait l'option de l'intensification agricole par la surfertilisation. La présente étude a pour but d'évaluer les relations entre deux perceptions de ces maraîchers et la surfertilisation des cultures avec les engrais minéraux et la fiente de volaille. Les données ont été collectées à travers des observations directes et des entretiens sur la base de questionnaires auprès de 100 maraîchers opérant sur les différents sites. Le traitement statistique des données a été fait à l'aide du modèle de régression binaire logit. L'analyse de la première perception a montré que l'option est déterminée par le nombre d'années d'expérience. Quant à la seconde, elle a révélé que la connaissance préalable de certaines maladies détermine la connaissance ou non des risques sanitaires liés à une utilisation intense des engrais minéraux et de la fiente de volaille. La prise en compte de ces facteurs « expérience » et « connaissance » devient une nécessité dans la mise en place des stratégies devant permettre aux maraîchers d'appréhender les risques sanitaires liés à une utilisation intense desdits intrants. © 2017 International Formulae Group. All rights reserved. Mots clés : Littoral, fertilité, légumes, engrais minéraux, fiente de volaille, risques sanitairesRelations between farmers perceptions and over dose fertilization in urban and peri urban market gardening in Benin ABSTRACT By taking into account the low fertility level of the littoral soils and the lack of cropping lands due to urbanization growing, Grand-Popo farmers opt for agricultural intensification by using over dose fertilization. The present study aims to assess the relations between two perceptions of Grand-Popo market gardeners and over dose fertilization of vegetables with mineral fertilizers and poultry manure. Data were collected through field observations and discussion based on questionnaires addressed to 100 market gardeners of the different production sites. The statistic treatment of the data was done with the model of logit binary regression. The analysis of the first perception showed that the choice is determined by the number of years of experience. The analysis of the second perception revealed that the previous knowledge of some diseases determines the knowledge or not of the sanitary risks linked to an intense utilization of chemical fertilizers and poultry manure. Taking into account of the two factors "experience" and "knowledge" becomes a necessity in the S. C. ATIDEGLA et al. / Int.

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Modelling nitrogen cycles of farming systems as basis of site- and farm-specific nitrogen management

Cited by 76 publications

References 34 publications

Nitrogen, phosphorus and potassium balances and cycles of Swiss agriculture from 1975 to 2008

Nitrogen, phosphorus and potassium balances and cycles of Swiss agriculture from 1975 to 2008

The humus balance model (HU-MOD): a simple tool for the assessment of management change impact on soil organic matter levels in arable soils

Relations entre perceptions des producteurs et surfertilisation en maraichage urbain et péri urbain au Bénin

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