A field experiment on farmers responses to various appeals

Last registered on August 24, 2023
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Pre-Trial

Trial Information

General Information

Title
A field experiment on farmers responses to various appeals
RCT ID
AEARCTR-0011963
Initial registration date
August 21, 2023

Initial registration date is when the trial was registered.

It corresponds to when the registration was submitted to the Registry to be reviewed for publication.

First published
August 24, 2023, 6:24 AM EDT

First published corresponds to when the trial was first made public on the Registry after being reviewed.

Locations

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Primary Investigator

Name
Tongzhe Li
Affiliation
University of Guelph
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Other Primary Investigator(s)

PI Name
Siyu Wang
PI Affiliation
Wichita State University
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Additional Trial Information

Status
In development
Start date
2023-09-12
End date
2024-09-20
Keywords
Agriculture, Behavior, Environment & Energy
Additional Keywords
JEL code(s)
Secondary IDs
Prior work
This trial does not extend or rely on any prior RCTs.
Abstract
We will conduct a lab-in-the-field experiment at the 2023 Canada’s Outdoor Farm Show (COFS) in Ontario, Canada. The products being tested will be nitrogen stabilizers and fertilizer metering systems accustomed to each participant’s farm via a cost-share Becker-DeGroot-Marschak (BDM) mechanism. The outcome variable of interest will be farmers’ bids on the examined products under various between-subjects treatments.
External Link(s)

Registration Citation

Citation
Li, Tongzhe and Siyu Wang. 2023. "A field experiment on farmers responses to various appeals." AEA RCT Registry. August 24. https://doi.org/10.1257/rct.11963-1.0
Sponsors & Partners

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Experimental Details

Interventions

Intervention(s)
Farmers will be recruited at COFS in Woodstock (Ontario) between September 12-14, 2023 to participate in an experimental auction in the format of cost-share BDM mechanism. Each participant will bid on a nitrogen stabilizer and a fertilizer metering system, which are two types of popular products used for the 4R (Right Source, Right Rate, Right Time, Right Place) fertilizer management. Various information appeals will be shown to participants via a between-subjects design.
Intervention Start Date
2023-09-12
Intervention End Date
2023-09-15

Primary Outcomes

Primary Outcomes (end points)
Agricultural producers' bidding behaviour on various fertilizer management products.
Primary Outcomes (explanation)

Secondary Outcomes

Secondary Outcomes (end points)
Secondary Outcomes (explanation)

Experimental Design

Experimental Design
Various appeals will be shown to agricultural producers when they bid on nitrogen stabilizers and fertilizer metering systems. Via a between-subjects design, 5 different appeals plus control will be implemented.
Experimental Design Details
Not available
Randomization Method
Python-based language will be used for the experimental interface. Randomization will be done by a computer at the individual participant level.
Randomization Unit
Individual
Was the treatment clustered?
No

Experiment Characteristics

Sample size: planned number of clusters
A minimum of 384 individuals.
Sample size: planned number of observations
A minimum of 384 individuals, each with 2 bids.
Sample size (or number of clusters) by treatment arms
A minimum of 64 per treatment arm.
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
5 percentage points in farmers' cost-share bid differences.
Supporting Documents and Materials
IRB

Institutional Review Boards (IRBs)

IRB Name
University of Guelph's Research Ethics Boards
IRB Approval Date
2023-08-11
IRB Approval Number
22-02-009
Analysis Plan

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