Farmers used to worry about weeds. Then, herbicides solved that problem. At least for a while. In 1997, there were 432 new patents for herbicides; by 2009, there were only 65. Developing broad-spectrum glyphosate and “Roundup Ready” crops worked so well that people basically stopped looking for new herbicides. But then the weeds started fighting back.
Sources:
- Molecular basis for the herbicide resistance of Roundup Ready crops
- THE SHIKIMATE PATHWAY
- Why have no new herbicide modes of action appeared in recent years?
- The Pitfalls of Relating Weeds, Herbicide Use, and Crop Yield: Don't Fall Into the Trap! A Critical Review
- The cost of herbicide resistance
- Development and Characterization of a CP4 EPSPS-Based, Glyphosate-Tolerant Corn Event
- Tyrosine Biosynthesis, Metabolism, and Catabolism in Plants
- Biosynthesis and Metabolic Fate of Phenylalanine in Conifers
- Auxin driven indoleamine biosynthesis and the role of tryptophan as an inductive signal in Hypericum perforatum (L.)
- Finding of No Significant Impact I Animal and Plant Health Inspection Service I Petition for Non-regulated Status for Soybean Line MON 89788 (APHIS 06-178-01p)
- Glyphosate resistance: state of knowledge
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