FS HN 308 Lecture Notes - Lecture 10: Genetically Modified Maize, River Source, Corn Belt

• School: Iowa State University
• Department: Food Science and Human Nutrition
• Course: FS HN 308
• Professor: Stephanie Clark

Document Summary

Isu - organic production increases yields and builds soil quality: results from the ongoing study of conventional and organic cropping systems by iowa. State researchers show that organic systems increase yields and improve soil quality: by the fourth year in an organic crop rotation, organic corn and soybean yields rose above conventionally managed fields. In addition, teasdale and ars soil scientist michel cavigelli showed that after 10 years, corn yields were higher in diverse organic rotations that included a perennial legume. In long-term research at washington state, nitrogen (n) losses to groundwater and the atmosphere were reduced in organic orchards, relative to conventional orchards. Better colonization of roots by beneficial mycorrhizal fungi in organic crops may also play a role. What we know about gmos: horizontal gene transfer, cauliflower mosaic virus (camvp35s) is used to insert foreign genes into host organisms. Water samples were collected from nine stream sites during the 2013 growing season.