GE Crops in the Developing World

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Genetically Modified Maize: Less Drudgery for Her, More Maize for Him? Evidence from Smallholder Maize Farmers in South Africa (2016)

This paper presents quantitative and qualitative results from a study of the gender-specific adoption and performance effects of insect resistant (Bt) and herbicide-tolerant (HT) maize produced by smallholder farmers in the Kwa Zulu Natal province in South Africa.
The findings indicate that women farmers value the labor-saving benefit of HT maize alongside the stacked varieties which offer both insect control and labor saving. Higher yields are the main reason behind male adoption, while female farmers tend to favor other aspects like taste, quality, and the ease of farming herbicide-tolerant (HT) crops. Women farmers (and also children) saved significant time because less weeding is required, an activity that has traditionally been the responsibility of female farmers.
The newer stacked varieties were preferred by both male and female farmers and seemed to be in high demand by both groups. However, lack of GM seed availability in the region and poor market access were possible limitations to the adoption and spread of the technology.

https://www.sciencedirect.com/science/article/pii/S0305750X16000498

Economic impacts and impact dynamics of Bt (Bacillus thuringiensis) cotton in India (2012)

Building on unique panel data collected between 2002 and 2008, and controlling for nonrandom selection bias in technology adoption, we show that Bt has caused a 24% increase in cotton yield per acre through reduced pest damage and a 50% gain in cotton profit among smallholders. These benefits are stable; there are even indications that they have increased over time.
We further show that Bt cotton adoption has raised consumption expenditures, a common measure of household living standard, by 18% during the 2006–2008 period. We conclude that Bt cotton has created large and sustainable benefits, which contribute to positive economic and social development in India. <<

http://www.pnas.org/content/109/29/11652.short


Bt cotton cuts pesticide poisoning (2011)

Over the past ten years that farmers in India have been planting Bt cotton – a transgenic variety containing genes from the soil bacterium Bacillus thuringiensis making it pest resistant – pesticide use has been cut by at least half, a new study shows.
The research also found that the use of Bt cotton helps to avoid at least 2.4 million cases of pesticide poisoning in Indian farmers each year, saving US$14 million in annual health costs.

http://blogs.nature.com/news/2011/07/bt_cotton_cuts_pesticide_poiso.html

Genetically Modified Crops and Food Security (2013)

We use comprehensive panel data collected over several years from farm households in India, where insect-resistant GM cotton has been widely adopted. Controlling for other factors, the adoption of GM cotton has significantly improved calorie consumption and dietary quality, resulting from increased family incomes. This technology has reduced food insecurity by 15–20% among cotton-producing households. GM crops alone will not solve the hunger problem, but they can be an important component in a broader food security strategy.

http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0064879


Bt Cotton, Pesticide Use and Environmental Efficiency in Pakistan (2014)

We analyse the impact of Bt cotton on environmental efficiency in Pakistan, using farm survey data and a doubly heteroskedastic stochastic production function framework. Negative environmental and health effects of chemical pesticide use are quantified with the environmental impact quotient.
Bt-adopting farms have higher cotton yields, while using lower pesticide quantities and causing less environmental damage. Bt farms are both technically and environmentally more efficient than non-Bt farms. Bt adoption increases environmental efficiency by 37%. Achieving the same reduction in negative environmental and health impact without Bt would cost conventional cotton farmers US$ 54 per acre in terms of foregone yields and revenues (7% of total revenues).
Extrapolating this shadow price of the technology's health and environmental benefits to the total Bt cotton area in Pakistan results in an aggregate value of US$ 370 million. These benefits are in addition to the profit gains for Bt-adopting farmers. Our results suggest that Bt technology can contribute to sustainable agricultural development.

http://onlinelibrary.wiley.com/doi/10.1111/1477-9552.12072/abstract/

RESOURCES

ISAAA Approval Database: Countries with GM Crop Approvals

http://www.isaaa.org/gmapprovaldatabase/countrylist/default.asp