Availability and Market Penetration of GMO Corn and Soybeans
调查了抗虫和抗除草剂的转基因玉米与大豆品种，并评估了农民采用这些作物的程度，提供了种植面积百分比和产量对比数据。
The authors survey various types of GMO (genetically modified organism) corn and soybeans, including both pest-resistant and herbicide-resistant varieties, and then evaluate the extent to which farmers have begun to use GMO crops. Figures cited include percentages of acres planted with GMO crops, as well as comparisons of non-GMO versus GMO yields.