Yield problems
A
study by the Union of Concerned Scientists has found that food and feed GM crops in the
United States have done little to improve crop yields with increases in production coming
from other plant breeding technologies (Bloomberg, 14 April 2009)
Poor
GM performance leads farmers in Brazil's top soy state to start returning to non-GM soya
varieties, but concerns are growing that high performance non-GM lines may not be made
available by seed companies in the future (Reuters, 13 March 2009)
Roundup Ready sugar beet has delivered a disappointing
performance in its first year of growing in the United States (Farmers Weekly, 6 February
2009)
GM
canola in Canada has not increased yields and costs more, and contamination of non-gm
crops means that growing the latter is no longer possible (Weekly Times, Australia, 26
February 2009)
GM
canola (oilseed rape) has yielded less than non-GM canola in Australian field trials
(Australian Associated Press, 16 January 2009)
Non-GM Cotton Just As Or
More Profitable As GM (American Society of Agronomy, 11 February 2008)
Problems
persist with inadequately tested Bt Cotton varieties in India - Financial Express, India,
5 June 2006
Inferior grain yields from Bt maize - Field Crops Research 93:
199-21, September 14, 2005
Seed
yields are down from US GM cotton varieties - Delta Farm Press 18 August 2005
Indian
state bans Bt cotton following poor agronomic performance - India News, May 2005
Brazil - GM soya yields hit hard in drought
conditions compared to conventional varieties
Crop failure and major
husbandry problems with Monsanto's Bt cotton in India
GM crops
under fire after Bt cotton venture fails in India
GM plants no panacea - Monsanto Admits to Bt crop
problems - New Scientist Report
USDA Report Exposes GM Crop Economic Myths
'Welsh Farmer' - Flaws in GM
crop trials - Feb 2002
Disease hits RR soy -
Court awards large damages
Bt cotton
fails in Indonesia
Study
Questions Widespread Use of Bt Corn
Soya study casts doubt on GM decision making
process
Soya realities expose GM hype - yields down, pesticides up
Monsanto 'MAB' progress reinforces positive FAO world food
forecast
GM rape heading for agronomic scrap heap?
GM cotton growers hitting fibre
quality problems?
Glyphosate
treated GM soy regime impact on soil micro-organisms
Effect of RR soy regime
on nitrogen fixation
Low Yields from RR soya - Nebraska
University Study - Comments by NLP Wessex
Low
yields from GM soya - University of Nebraska
Sugar beet study exposes media
manipulation by GM industry
GM firm faked test
figures - herbicide resistant maize
GM Rape fails to perform as study reveals
erroneous basis for UK fieldscale trials
Why millions of acres of underperforming GM crops are
being grown in the USA
No yield or cost benefits from Roundup Ready Corn - University of
Kentucky Study
(Full RR corn
Kentucky report - pdf format - click here)
Low GM soya yields - Wisconsin study
short summary
Low GM soya yields - University of Wisconsin
More
GM cotton failures in 1998
Low yields from UK GM rape
and sugar beet crops - NIAB trials
Little benefit to farmers
from GM crops - Farmers Weekly
Monsanto approach to sustainability
Low yields from GM cotton
Monsanto's
GM soyabean hit by fungus outbreak
GM potato yields collapse
GM oilseed rape outperformed by traditional unmodified varieties
Monsanto pays millions in
compensation to US GM "Roundup-Ready" cotton growers
Cyanamid claim yield losses of up to $43 per acre with Monsanto's
GM Soya
Mississippi cotton farmers to sue
Monsanto for Roundup-Ready failures
Calgene Flavr Savr tomato
defective and withdrawn from market
GM
cotton crop failures
New
Scientist report on gm cotton failures
New York Times article on gm cotton
failures
Boll Drop
Problems in Roundup-Resistant GM Cotton
Performance
problems with Roundup Ready GM Cotton
Monsanto
GM soya defective in hot conditions - (see last item)
Organic soya outperforms
conventional soya in drought conditions