Tuesday , December 1 2020
Home / T. Cowen: Marginal Revolution / Bt Eggplant is Great

Bt Eggplant is Great

Summary:
A very important result from Ahmed, Hoddinott, Abedin and Hossain in The American Journal of Agricultural Economics. Bt eggplant offers a 51% increase in yield, a 37.5% decrease in pesticide use, increased farmer profits and decreased farmer sickness. Wow! We implemented a cluster randomized controlled trial to assess the impact of genetically modified eggplant (Bt brinjal) in Bangladesh. Our two primary outcomes were changes in yield and in pesticide costs. Cultivation of Bt brinjal raises yields by 3,564 kg/ha. This statistically significant impact is equivalent to a 51% increase relative to the control group. There is a statistically significant fall in pesticide costs, 7,175 Taka per hectare (85 USD per ha), a 37.5% reduction. Yield increases arise because Bt farmers harvest more

Topics:
Alex Tabarrok considers the following as important: , ,

This could be interesting, too:

Alex Tabarrok writes Teaching Modern Principles Online

Tyler Cowen writes Markets in everything, messed up edition

Tyler Cowen writes Who Mismanages Student Loans and Why?

Alex Tabarrok writes Yes, Testing Works

A very important result from Ahmed, Hoddinott, Abedin and Hossain in The American Journal of Agricultural Economics. Bt eggplant offers a 51% increase in yield, a 37.5% decrease in pesticide use, increased farmer profits and decreased farmer sickness. Wow!

We implemented a cluster randomized controlled trial to assess the impact of genetically modified eggplant (Bt brinjal) in Bangladesh. Our two primary outcomes were changes in yield and in pesticide costs. Cultivation of Bt brinjal raises yields by 3,564 kg/ha. This statistically significant impact is equivalent to a 51% increase relative to the control group. There is a statistically significant fall in pesticide costs, 7,175 Taka per hectare (85 USD per ha), a 37.5% reduction. Yield increases arise because Bt farmers harvest more eggplant and because fewer fruits are discarded because they are damaged. Bt brinjal farmers sell more eggplant and receive a higher price for the output they sell while incurring lower input costs, resulting in a 128% increase in net revenues. Bt brinjal farmers used smaller quantities of pesticides and sprayed less frequently. Bt brinjal reduced the toxicity of pesticides as much as 76%. Farmers growing Bt brinjal and who had pre‐existing chronic conditions consistent with pesticide poisoning were 11.5% points less likely to report a symptom of pesticide poisoning and were less likely to incur cash medical expenses to treat these symptoms. Our results are robust to changes in model specification and adjustment for multiple hypothesis testing. We did not find evidence of heterogeneous effects by farmer age, schooling, or land cultivated. Bt brinjal is a publicly developed genetically modified organism that conveys significant productivity and income benefits while reducing the use of pesticides damaging to human and ecological health.

Hat tip: Marc Bellemare.

The post Bt Eggplant is Great appeared first on Marginal REVOLUTION.

Alex Tabarrok
Alex Tabarrok is Bartley J. Madden Chair in Economics at the Mercatus Center at George Mason University and a professor of economics at George Mason University. He specializes in patent-system reform, the effectiveness of bounty hunters compared to the police, how judicial elections bias judges, and how local poverty rates impact trial decisions by juries. He also examines methods for increasing the supply of human organs for transplant, the regulation of pharmaceuticals by the FDA, and voting systems.

Leave a Reply

Your email address will not be published. Required fields are marked *