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Risk and the modernization of agriculture
Last registered on July 21, 2014

Pre-Trial

Trial Information
General Information
Title
Risk and the modernization of agriculture
RCT ID
AEARCTR-0000448
Initial registration date
July 21, 2014
Last updated
July 21, 2014 7:47 PM EDT
Location(s)
Region
Primary Investigator
Affiliation
Tufts University
Other Primary Investigator(s)
PI Affiliation
UC Berkeley
PI Affiliation
International Rice Research Institute
PI Affiliation
UC Berkeley
Additional Trial Information
Status
Completed
Start date
2011-09-01
End date
2014-06-30
Secondary IDs
Abstract
This paper tests whether adding flood tolerance to the farmer's production technology -- thus sharply reducing risk -- leads to agricultural investment. Specifically, we study Swarna-Sub1, which is one of the first stress-tolerant rice varieties to be released in south Asia. Other than enhanced flood tolerance, Swarna-Sub1 is genetically very similar to the popular rice variety Swarna.

We use a randomized experiment across 128 villages in the Bhadrak and Balasore districts of Odisha India. 5 farmers in each treatment village were provided a small amount of Swarna-Sub1 seed. Two years of follow-up surveys were conducted.
External Link(s)
Registration Citation
Citation
Dar, Manzoor et al. 2014. "Risk and the modernization of agriculture." AEA RCT Registry. July 21. https://doi.org/10.1257/rct.448-2.0.
Former Citation
Dar, Manzoor et al. 2014. "Risk and the modernization of agriculture." AEA RCT Registry. July 21. https://www.socialscienceregistry.org/trials/448/history/2195.
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Experimental Details
Interventions
Intervention(s)
Intervention Start Date
2011-09-01
Intervention End Date
2014-06-30
Primary Outcomes
Primary Outcomes (end points)
Rice yield (kg per ha)
Fertilizer usage (kilograms N, P, and K)
Area cultivated (number of plots, area, and log area)
Planting technique (broadcasting vs. transplanting)
Irrigation application
Credit utilization
Share of rice harvest saved for consumption
Adoption of traditional rice varieties
Adoption of Swarna
Land fallowing
Seed use per hectare

Primary Outcomes (explanation)
Secondary Outcomes
Secondary Outcomes (end points)
Secondary Outcomes (explanation)
Experimental Design
Experimental Design
A small amount of Swarna-Sub1 seeds were provided to 5 farmers in each of 64 treatment villages. The treatment consisted only of the small package of seeds and a short information sheet describing the new variety.

The control group consists of 5 farmers in each of the 64 control villages. In addition, 10 farmers in each of the 64 treatment villages were surveyed. We test for spillovers amongst these farmers.
Experimental Design Details
Randomization Method
Village-level randomization was done in office by a computer. Randomization within treatment villages was done by pre-assigned random number.
Randomization Unit
The first tier of randomization was the village level. There was also individual level randomization within treatment clusters.
Was the treatment clustered?
Yes
Experiment Characteristics
Sample size: planned number of clusters
128
Sample size: planned number of observations
1,280
Sample size (or number of clusters) by treatment arms
64 villages control, 64 villages treatment
Minimum detectable effect size for main outcomes (accounting for sample design and clustering)
IRB
INSTITUTIONAL REVIEW BOARDS (IRBs)
IRB Name
UC Berkeley
IRB Approval Date
2011-07-26
IRB Approval Number
2011-05-3208
Post-Trial
Post Trial Information
Study Withdrawal
Intervention
Is the intervention completed?
No
Is data collection complete?
Data Publication
Data Publication
Is public data available?
No
Program Files
Program Files
Reports and Papers
Preliminary Reports
Relevant Papers