To design effective resistance management strategies for the long term, UC and other scientists are conducting basic research on weed biology and on ecological and evolutionary processes in weed populations. In a few cases, the mechanisms that confer resistance to herbicides have altered the fitness of resistant plants, as compared with susceptible plants of the same…
All posts in May 2025
The possibility of weed shifts and weed resistance is a concern with RR alfalfa
A tank mix of glyphosate and Velpar, or a rotation to Velpar and Gramoxone, was needed to adequately control all weed species at this location. To our knowledge there have been no documented cases of weed resistance in alfalfa during the first 3 years of RR alfalfa production in the United States. This is due to…
Some weed seeds require scarification and disturbance for germination and emergence
Machinery would be used less, and that would mean an additional savings of an estimated $2500 in machinery wear. Conservation tillage is an umbrella term that encompasses many types of tillage and residue management systems . There are several definitions for CT. For example, Allmaras and Dowdy define it as “a combination of cultural practices that…
Modern approaches have resulted in a deeper understanding of host resistance to parasitic plants
Cryo-EM is providing previously unobtainable, high-resolution structures of plant viruses and it holds promise for resolving intracellular macromolecular virus-associated complexes . Approaches such as RNA-seq, small RNA sequencing, metabolomics, and proteomics should facilitate dissection of molecular signatures that are altered in the vector during virus acquisition and in the host upon infection. Furthermore, understanding of…