According to the latest issue of the US "Science" magazine, a joint study conducted by scientists from China and the United States shows that planting genetically modified rice can significantly reduce the amount of pesticides used, increase rice yield, and have significant economic and health benefits.
The joint research was led by Huang Jijun, director of the Agricultural Policy Research Center of the Chinese Academy of Sciences, researcher Hu Ruifa, and Professor Scott Rozeler of the University of California, Davis, and Karl Preley, professor of the Rutgers University. In this project, the scientists studied two transgenic rice varieties: “Shanyou 63†with insect-resistant genes for Bacillus thuringiensis and “Yaming 86†with insect-resistant genes for cowpea. The two transgenic rice varieties have been in small-scale trials in parts of Fujian Province in China since 2001. In 2002 and 2003, scientists conducted a sample survey of all or part of the farmers who planted genetically modified rice, and also compared the situation of farmers who planted the same varieties of non-genetically modified rice.
The survey showed that under the same conditions, the farmers planting transgenic rice use less than one pesticide per season on average, while the farmers planting ordinary rice use pesticides 3.7 times per season on average; the rice fields planted with genetically modified rice are The amount of hectares used for pesticides is one-eighth to one-tenth that of ordinary paddy fields.
In addition, the yield of the "Shanyou 63" planted with the gene was 9% higher than that of the non-transgenic rice of the same variety. Although there is no significant difference between the rice yield and non-transgenic varieties of the transgenic "Youming 86," scientists believe this is due to the small scale of the experiment.
Scientists also found that because farmers planting genetically modified rice have significantly reduced the amount of pesticides used, the health problems caused by it have also been significantly reduced. In the survey, farmers who planted GM rice did not report pesticide-related health problems. Farmers who grow ordinary rice have reported diseases related to side effects of pesticides.
In a paper published in the journal Science, scientists concluded that: "This study proves that insect-resistant GM rice has significant benefits in terms of yield and farmers' health."
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