Tag: experiments
Results of alley cropping experiments with Leucaena leucocephala and Zea mays at the Kenya Coast
This paper covers the 1982 research on hedgerow intercropping which was initiated with 8 different tree species at the Mtwapa agricultural research station to identify ways to improve these yields. The major objectives of the trials were to get information on best tree species, planting spacing, and management practices to give maximum economic benefits to local small-scale farmers
Improved methods for the extraction of soil samples for root research
A monolith sampler is described which makes it possible to obtain pinboard samples from the field without digging a trench. Also, for container experiments a method is presented by which the complete soil column can be pushed out of plastic tubes (containers) to permit examination of the intact root system without cutting the tubes.
Protocol of implementing behavioral experiments for fruit tree marketing options in Rwanda: A trust experiment
The objectives of this study are (1) to elicit trust, risk and time preferences of smallholder fruit tree farmers in eastern Rwanda using monetary incentivized experiments, and (2) to investigate key attributes or features of marketing contracts that are preferred by farmers using a discrete choice experiment (DCE). We investigate farmer preferences related to six hypothetical marketing contract attributes: sales mode, timing of payment, input/service provision, form of contract, relation to the buyer, and investment costs. To demonstrate the relation between trust, risk and time preferences and the adoption of marketing contracts, we couple these experimental data with the results from the DCE about farmers’ preferences for marketing contract attributes. We estimate a random parameters logit model, including interaction terms between contract attributes and behavioral preferences, to disentangle preference heterogeneity. Disentangling these behavioral preferences can give interesting insights on how contracts should be designed in order to meet farmers’ preferences. The results can also provide guidance for the fruit marketing development to ensure that smallholder farmers benefit from the full potential of their fruit trees.
Protocol of implementing behavioral experiments for trees on farms options in Uganda: Experiment on risk preferences
The objectives of this study are (1) to elicit both risk and time preferences of smallholder coffee farmers in eastern Uganda using lottery-based experiments, and (2) to investigate key attributes or features of companion trees in coffee agroforestry systems that are preferred by farmers using a discrete choice experiment (DCE). We investigate farmer preferences related to six companion tree attributes: tree products provided, regulating ecosystem services provided, growth rate, seedling price, provision of quality shade for coffee, and maximum tree height. To demonstrate the relation between risk and time preferences and the adoption of companion trees, we couple these experimental data with the results from the DCE about farmers’ preferences for companion tree attributes. To analyze potential strata in farmer preferences, our sample includes coffee farmers from different altitude zones. Our gendered research design furthermore allows exploring possible differences in preferences between men and women.
Protocol of implementing behavioral experiments for trees on farms options in Uganda: Experiment on time preferences
The objectives of this study are (1) to elicit both risk and time preferences of smallholder coffee farmers in eastern Uganda using lottery-based experiments, and (2) to investigate key attributes or features of companion trees in coffee agroforestry systems that are preferred by farmers using a discrete choice experiment (DCE). We investigate farmer preferences related to six companion tree attributes: tree products provided, regulating ecosystem services provided, growth rate, seedling price, provision of quality shade for coffee, and maximum tree height. To demonstrate the relation between risk and time preferences and the adoption of companion trees, we couple these experimental data with the results from the DCE about farmers’ preferences for companion tree attributes. To analyze potential strata in farmer preferences, our sample includes coffee farmers from different altitude zones. Our gendered research design furthermore allows exploring possible differences in preferences between men and women.
Protocol of implementing behavioral experiments for trees on farms options in Uganda: A discrete choice experiment
The objectives of this study are (1) to elicit both risk and time preferences of smallholder coffee farmers in eastern Uganda using lottery-based experiments, and (2) to investigate key attributes or features of companion trees in coffee agroforestry systems that are preferred by farmers using a discrete choice experiment (DCE). We investigate farmer preferences related to six companion tree attributes: tree products provided, regulating ecosystem services provided, growth rate, seedling price, provision of quality shade for coffee, and maximum tree height. To demonstrate the relation between risk and time preferences and the adoption of companion trees, we couple these experimental data with the results from the DCE about farmers’ preferences for companion tree attributes. To analyze potential strata in farmer preferences, our sample includes coffee farmers from different altitude zones. Our gendered research design furthermore allows exploring possible differences in preferences between men and women.
Protocol of implementing behavioral experiments for fruit tree marketing options in Rwanda: An experiment on time preferences
The objectives of this study are (1) to elicit trust, risk and time preferences of smallholder fruit tree farmers in eastern Rwanda using monetary incentivized experiments, and (2) to investigate key attributes or features of marketing contracts that are preferred by farmers using a discrete choice experiment (DCE). We investigate farmer preferences related to six hypothetical marketing contract attributes: sales mode, timing of payment, input/service provision, form of contract, relation to the buyer, and investment costs. To demonstrate the relation between trust, risk and time preferences and the adoption of marketing contracts, we couple these experimental data with the results from the DCE about farmers’ preferences for marketing contract attributes. We estimate a random parameters logit model, including interaction terms between contract attributes and behavioral preferences, to disentangle preference heterogeneity. Disentangling these behavioral preferences can give interesting insights on how contracts should be designed in order to meet farmers’ preferences. The results can also provide guidance for the fruit marketing development to ensure that smallholder farmers benefit from the full potential of their fruit trees.
Protocol of implementing behavioral experiments for fruit tree marketing options in Rwanda: An experiment on risk preferences
The objectives of this study are (1) to elicit trust, risk and time preferences of smallholder fruit tree farmers in eastern Rwanda using monetary incentivized experiments, and (2) to investigate key attributes or features of marketing contracts that are preferred by farmers using a discrete choice experiment (DCE). We investigate farmer preferences related to six hypothetical marketing contract attributes: sales mode, timing of payment, input/service provision, form of contract, relation to the buyer, and investment costs. To demonstrate the relation between trust, risk and time preferences and the adoption of marketing contracts, we couple these experimental data with the results from the DCE about farmers’ preferences for marketing contract attributes. We estimate a random parameters logit model, including interaction terms between contract attributes and behavioral preferences, to disentangle preference heterogeneity. Disentangling these behavioral preferences can give interesting insights on how contracts should be designed in order to meet farmers’ preferences. The results can also provide guidance for the fruit marketing development to ensure that smallholder farmers benefit from the full potential of their fruit trees.
Protocol of implementing behavioral experiments for fruit tree marketing options in Rwanda: A discrete choice experiment
The objectives of this study are (1) to elicit trust, risk and time preferences of smallholder fruit tree farmers in eastern Rwanda using monetary incentivized experiments, and (2) to investigate key attributes or features of marketing contracts that are preferred by farmers using a discrete choice experiment (DCE). We investigate farmer preferences related to six hypothetical marketing contract attributes: sales mode, timing of payment, input/service provision, form of contract, relation to the buyer, and investment costs. To demonstrate the relation between trust, risk and time preferences and the adoption of marketing contracts, we couple these experimental data with the results from the DCE about farmers’ preferences for marketing contract attributes. We estimate a random parameters logit model, including interaction terms between contract attributes and behavioral preferences, to disentangle preference heterogeneity. Disentangling these behavioral preferences can give interesting insights on how contracts should be designed in order to meet farmers’ preferences. The results can also provide guidance for the fruit marketing development to ensure that smallholder farmers benefit from the full potential of their fruit trees.