
Henning SchaakBOKU University | boku
Henning Schaak
Dr.
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24
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Publications
Publications (24)
Diversified crop production is a key agroecological practice that enhances ecosystem functions and reduces reliance on costly external inputs, such as for plant protection and nutrition but might also increase labour costs and lower crop yields. We investigate if functional diversification, i.e., cultivation of crop species with contrasting ecologi...
An important issue for many economic experiments is how the experimenter can ensure sufficient power in order to reject one or more hypotheses. The paper illustrates how methods for testing multiple hypotheses simultaneously in adaptive, two-stage designs can be used to improve the power of economic experiments. We provide a concise overview of the...
This study adds insights about the nonlinear effect of parcel sizes on farmland prices. Therefore, replications of Ritter et al. (2020, Land Use Policy, DOI: j.landusepol.2020.104771) are performed in four ways. The study contributes to the literature within two dimensions: (i) the geographical scope, which allows insights into regional differences...
Risk is a pervasive factor in agriculture and a subject of great interest to agricultural economists. However, there is a lack of comprehensive understanding of the knowledge held by farm advisors, students, and economists with regards to farmers' risk preferences. Misconceptions about farmers’ willingness to take risks could lead to misguided advi...
The diversity of cultivated crops is relevant on various spatial scales, from the field and farm to the landscape. We apply a decomposition of the Shannon diversity index that allows the differentiation of functional diversity of production. The decomposition separates diversity of functional crop groups from related diversity, which shows the spec...
This paper studies the profitability of investments in agricultural land, using the rent–price ratio (RPR) as a profitability measure. In order to allow for district-level heterogeneity, the full conditional distribution of the RPR is modelled using a generalised additive model for location, shape and scale. The analysis is based on data from Lower...
The paper investigates the influence of different model specifications for interpreting the results of discrete choice experiments when investigating heterogeneous public landscape preferences. Comparing model specifications based on the Mixed Multinomial Logit and the Generalized Multinomial Logit Model reveals that the parameter estimates appear...
An important issue for many economic experiments is how the experimenter can ensure sufficient power for rejecting one or more hypotheses. Here, we apply methods developed mainly within the area of clinical trials for testing multiple hypotheses simultaneously in adaptive, two-stage designs. Our main goal is to illustrate how this approach can be u...
Crop protection technologies and their usage are critically discussed issues, both in the public discourse and within the agricultural sector. However, attitudes towards different methods of crop protection have been primarily investigated through surveys thus far. Thus, explicit attitudes can be biased. Furthermore, they can differ between countri...
The analysis of sales prices and rents for agricultural land are a classical research topic in agricultural economics. Due to increased dynamic on agricultural land markets, their relationship has gained increased interest recently. The present study contributes to the literature by studying the district level heterogeneity of the rent-price-ratio...
This note discusses the application of segmented multinomial logit models (MNL) for the analysis of discrete choice experiments. It is shown how the segmentation can be achieved by relying on the model-based recursive partitioning framework and how it can be carried out in R. The approach is illustrated by revisiting an empirical study. The results...
In der Öffentlichkeit sowie in der Agrar- und Ernährungswirtschaft werden chemischer Pflanzenschutz und Pflanzenschutz durch gentechnisch veränderte Nutzpflanzen kontrovers diskutiert. Die Einstellung zu verschiedenen Methoden des Pflanzenschutzes wurde jedoch bislang ausschließlich durch Umfragen untersucht, welche unter Umständen ein verzerrtes o...
Chemical plant protection and protection by genetic modification of crops are being discussed controversially by the public as well as by the agri-food industry itself. However, attitudes towards different methods of plant protection have so far only been studied by standard surveys, which may provide a biased or incomplete picture. This study cont...
Biodiversity, landscape aesthetics and grazing livestock have considerable relevance for agricultural production, however rarely considered in public landscape preferences research. This paper studies public preferences for pasture usage by the means of a discrete choice experiment using a representative sample of 449 individuals from Germany. Grap...
In the public discourse as well as in the agricultural sector itself, crop protection is a controversial discussion topic. So far, no study investigates the implicit association of crop protection methods. Therefore, this study aims to create a better understanding of the attitudes of both the public and agricultural sector by investigating implici...
Biodiversity, landscape aesthetics and grazing livestock have significant relevance for agricultural production, however they are rarely considered in public landscape references research. This paper studies public preferences for pasture usage by the means of a discrete choice experiment using a sample of 449 individuals from Germany. Graphical re...
Despite its relevance for agricultural production, biodiversity and landscape aesthetics, grazing livestock is rarely considered in research on public landscape preferences. This paper studies public preferences for pasture usage in Germany by the means of a discrete choice experiment. The results indicate that there is a general willingness to pay...
Due to a simultaneous decline in agricultural practice and an increased favorability and demand by society, grazing based milk production has become a topic of heightened interest in European agricultural policy, as well as dairy product marketing. This paper studies the behavior of German farmers with respect to the adoption of grazing practices....
The potential of grasslands as a carbon (C) sink in Europe is large despite the number of uncertainties related to the effect of grazing systems on C sequestration. The EIP-AGRI Focus Group (FG) ‘Grazing for Carbon’, a temporary group of 20 selected European experts from research and practice, shared knowledge and experience from different discipli...
Milk production methods and pasture usage have gained increasing attention in recent years. This paper studies possible influences on the decision to adopt grazing practices as well as on the extent of these practices. German dairy farms were analyzed using a multivariate sample-selection model. Results indicate that specialized farms and farms wit...
The risk attitude of a decision maker essentially influences each decision with uncertain outcomes.
Therefore, understanding and forecasting economic behavior requires a reliable tool
for measuring the individual risk attitude. In recent years, the external validity of experimental
risk attitude measures has been discussed in various studies. The l...