Measured and simulated availability and leaching of nitrogen associated with frequent use of catch crops

Aronsson, Helena; Torstensson, Gunnar

doi:10.1111/j.1475-2743.1998.tb00603.x

Cited by 61 publications

(39 citation statements)

References 18 publications

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“…A first strategy is curative: catch crops sown after maize harvest or undersowed companion crops can capture residual N. However, due to the late harvest date of silage maize, N uptake by catch crops can be rather poor, particularly in cold autumns and winters (Aronsson and Torstensson, 1998;Castillon, 2000;Gall Le et al, 1997). Schröder et al (1996) found that nitrate leaching under cover cropped plots at high N rates exceeded leaching under fallow plots at low N rates.…”

Section: Introductionmentioning

confidence: 99%

Agronomical and environmental evaluation of a long-term experiment with cattle slurry and supplemental inorganic N applications in silage maize

Nevens¹,

Reheul²

2005

European Journal of Agronomy

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During 19 years of research on silage maize grown a fertile sandy loam soil in Flanders, we compared the use of only inorganic nitrogen (S−) with a system of an annual application of dairy cattle slurry (S+, corresponding with an average rate of 180 kg N ha −1 ) supplemented with inorganic fertilizer nitrogen. The objectives were to study the efficiency of slurry-N, to determine the economic optimum of additional fertilizer-N use and to relate this optimum with the local threshold on residual soil nitrate-N. During the last 5 years, the economically optimal fertilizer rates in the S− and the S+ system were centred around 150 and 90 kg N ha −1 , respectively. So, saving on fertilizer N amounted to about 60 kg N ha −1 . At these N rates, the risk for trespassing the local legal threshold value for residual soil nitrate-N content (90 kg ha −1 , 0-90 cm) was small (less than one out of ten seasons); economic and ecological optima of N fertilization concurred well. Meeting the standards of the EU nitrates directive and/or a doubled fertilizer N price would urge to decrease the applied amount of inorganic N by ca. 50 kg ha −1 , resulting in yield losses of about 5% on the studied sandy loam soil with an important content of total N (5300 kg ha −1 , 0-30 cm). The ratio of N-fertilizer replacement to the total amount of applied slurry-N increased during the experimental period to an average level of 59% during the last 5 years.

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Section: Introductionmentioning

confidence: 99%

Agronomical and environmental evaluation of a long-term experiment with cattle slurry and supplemental inorganic N applications in silage maize

Nevens¹,

Reheul²

2005

European Journal of Agronomy

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“…Both of these options have been suggested as potential measures to reduce nutrient leakage from agriculture activities (Aronsson and Torstensson 1998, Kirchmann et al 2002, Arheimer et al 2004). The policy option for private sewers was to connect the private sewers to a larger sewage treatment plant.…”

Section: Conceptual Modelmentioning

confidence: 99%

Participatory Social-Ecological Modeling in Eutrophication Management: the Case of Himmerfjärden, Sweden

Franzén¹,

Kinell²,

Walve³

et al. 2011

E&S

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ABSTRACT. Stakeholder participation is increasingly seen as central in natural resource management. It is also required by the European Union Water Framework Directive, which identifies three levels of participation; information, consultation, and active involvement. In this paper we discuss the active involvement of stakeholders, using our experience from a case study in the Himmerfjärden region, which is a coastal area southwest of Stockholm, Sweden. Our study used the systems approach proposed by the European Union research project called Science and Policy Integration for Coastal System Assessment (SPICOSA), in which local stakeholders and a study site team constructed an integrated simulation model of a crucial coastal management issue. In this case the issue was nitrogen enrichment. We showed how stakeholder participation in the modeling process helped identify interesting and currently relevant management scenarios, and how the modeling process facilitated communication of the likely ecological, economic, and social effects of these scenarios to the stakeholders. In addition, stakeholders also reported social gains in terms of network building. We managed to actively involve local stakeholders in water issues, and the research process clearly strengthened the social capital in the Himmerfjärden region, and created a basis for future collaboration regarding water management. Our experience indicates that the approach we tried is a useful tool for promoting active stakeholder involvement in water management projects. Also, the results of our science and policy integration approach indicated that the study site team assumed a leadership role, which is a commonly recognized factor in successful natural resource management.

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“…The introduction of catch crops could mitigate N losses from soils (Martinez and Guiraud, 1990;Vos and Putten, 2001), but during the year there are always fallow periods or low crop growth phases where N is not taken up by plants (Rodrigues, et al, 2002). On the other hand, the progressive accumulation of soil organic matter could increase the risk of soil N losses (Lewan, 1994;Aronsson and Torstensson, 1998).…”

Section: Introductionmentioning

confidence: 99%

Crops use-efficiency of nitrogen from manures permitted in organic farming

Rodrigues¹,

Pereira²,

Cabanas³

et al. 2006

European Journal of Agronomy

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The current increase in the organic agriculture sector has created a new market for fertilisers approved for organic farming. Off-farm N sources for organic farming are scarce considering the restriction on the use of chemical fertilisers. Thus, when some commercial products are allowed for organic agriculture, commercial opportunities became available. In this study we compare the behaviour of Vegethumus (Veg) and Phenix (Phe), which are two manures allowed for organic farming, with several other manures, ammonium nitrate (AN) and control treatments. A three year field trial and a pot experiment were carried out in order to estimate dry matter yield, N uptake, and N nutritional status of the crops, as well as soil N availability by using anion exchange membranes inserted into the soil. Apparent N recoveries in the field trial were 6.3 % and 58.2 % in Veg and AN plots, respectively, after the application of 380 kg N/ha in the previous 5 growing seasons. In the pot experiment the ANR of Veg and Phe were -5.0 % and 13.6 %, respectively, while in AN pots it was 37.1%. The other organic manures used in the pot experiment gave higher apparent N recoveries than Veg and Phe if their C:N ratios or inorganic-N contents were taken into account. This work stresses that the use of manures approved for organic farming must first be carefully considered by farmers, with reference to price and agronomic value.

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Measured and simulated availability and leaching of nitrogen associated with frequent use of catch crops

Cited by 61 publications

References 18 publications

Agronomical and environmental evaluation of a long-term experiment with cattle slurry and supplemental inorganic N applications in silage maize

Agronomical and environmental evaluation of a long-term experiment with cattle slurry and supplemental inorganic N applications in silage maize

Participatory Social-Ecological Modeling in Eutrophication Management: the Case of Himmerfjärden, Sweden

Crops use-efficiency of nitrogen from manures permitted in organic farming

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