«Hybrid rice varieties are grown at 20 to 25 pounds of seed per acre, versus 75 to 85 pounds with conventional varieties,» Gore said. (sciencedaily.com)
China has nearly reached self - sufficiency in producing rice using conventional varieties, so the ministry has decided there is no need to commercialize Bt rice in the near future, says Huang Jikun, director of the Chinese Academy of Sciences» Center for Chinese Agricultural Policy. (sciencemag.org)
Among different foods and different conventional varieties of food crop there is considerable variability in the amounts of these chemicals (Catchpole and others 2005, Ioset and others 2007, Sautter & Urbaniak 2007, Wang and Murphy 1994). (academicsreview.org)