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The Acceptance and Profitability of Mixed Cropping with Legumes and Non-Legumes

dc.contributor.advisorMußhoff, Oliver Prof. Dr.
dc.contributor.authorBonke, Vanessa
dc.date.accessioned2021-11-04T11:29:59Z
dc.date.available2021-11-11T00:50:03Z
dc.date.issued2021-11-04
dc.identifier.urihttp://hdl.handle.net/21.11130/00-1735-0000-0008-596B-D
dc.identifier.urihttp://dx.doi.org/10.53846/goediss-8912
dc.language.isoengde
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/
dc.subject.ddc630de
dc.titleThe Acceptance and Profitability of Mixed Cropping with Legumes and Non-Legumesde
dc.typedoctoralThesisde
dc.contributor.refereeMußhoff, Oliver Prof. Dr.
dc.date.examination2021-04-30
dc.description.abstractengMixed cropping, the simultaneous cultivation of two or more coexisting crops in one field, is one possibility to increase biodiversity within farming systems. However, adoption of mixed cropping systems is challenging for farmers, as the agricultural sector has evolved around pure stands and path dependencies have emerged. Thus the adoption of this cropping method is low and so far, only very limited research focused on the farmers’ acceptance of these cropping systems. Therefore, it is the aim of this dissertation to analyze the adoption and profitability of mixed cropping with legume and non-legumes. The first paper of the cumulative thesis analyzes the influence of psychological factors on German farmers’ intention to adopt mixed cropping. In addition, the most crucial adop-tion obstacles are assessed. Using partial least squares structural equation modeling, the results show that attitude, perceived behavioral control, and injunctive as well as descriptive group norms explain a substantial share of farmers’ intention to adopt mixed cropping. The second paper addresses the profitability of mixed cropping on a farm level basis. The paper evaluates the profitability of mixed stands using the example of winter faba bean and winter wheat based on the results of scientific field trials conducted in Göttingen. The results indicate that mixed cropping with winter faba bean and winter wheat in the implemented form is currently not economically competitive in the conven-tional German agriculture. Applying a sensitivity analysis to a whole-farm model allowed the identi-fication of critical values for the gross margins of the mixed stand. These show that the gross mar-gins would have to surpass that of the dominantly produced cereals in the pure stand to be integrat-ed into the economically optimized production program. The third paper analyzes German farmer willingness to accept gross margin reductions for the more sustainable cultivation method of mixed cropping. This article provides first empirical insights into farmers stated willingness to accept gross margin changes compared to current production possibilities. German conventional farmers with a positive, neutral and negative willingness to accept reductions in gross margins as the trade-off for ecological benefits can be distinguished. Using an ordered logistic model the results show that risk attitude, risk perception, the number of measures performed for ecological focus areas, the farmer’s age and being located in the south of Germany influence their willingness to accept gross margin changes compared to currently produced cereals. As an excursus, the fourth paper of the thesis fo-cuses on the adoption of smartphone apps in crop protection. Crop protection apps are a decision support tool for farmers that enable them to improve their crop protection strategies, which inter alia can reduce negative environmental externalities and thus facilitate a more sustainable crop produc-tion. Based on the Unified Theory of Acceptance and Use of Technology framework, applying par-tial least squares equation modeling and a binary logit model, this paper investigated factors influ-encing the adoption of crop protection apps. The results show mismatch between apps perceived as useful and apps currently used, which has direct implications for the development of new crop pro-tection related apps that will help reduce negative externalities. The studies in this dissertation con-tribute to the identification of possible pathways to facilitate the adoption of mixed cropping by German farmers. Identifying behavioral drivers of adoption and evaluating the profitability aspects provides valuable insights for policy makers with respect to a possible implementation of agri-environmental schemes and the extent to which financial incentives would be necessary.de
dc.contributor.coRefereeSpiller, Achim Prof. Dr.
dc.contributor.thirdRefereeFeil, Jan-Henning Prof. Dr.
dc.subject.engmixed cropping adoptionde
dc.subject.engTheory of Planned Behaviorde
dc.subject.engwillingness to acceptde
dc.subject.enggross marginde
dc.subject.engrelative gross margin of mixturesde
dc.subject.engcrop protectionde
dc.subject.engsmartphone appsde
dc.subject.engUnified Theory of Acceptance and Use of Technologyde
dc.identifier.urnurn:nbn:de:gbv:7-21.11130/00-1735-0000-0008-596B-D-4
dc.affiliation.instituteFakultät für Agrarwissenschaftende
dc.subject.gokfullLand- und Forstwirtschaft (PPN621302791)de
dc.description.embargoed2021-11-11
dc.identifier.ppn1776229959


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