How Shade & Moisture Affect Weeds and the Development of Alternate Herbicides

Horseweed (Conyza Canadensis), hairy fleabane (Conyza bonariensis), and junglerice (Echinochloa colona) are problematic weeds in the perennial cropping systems of California. This problem has been growing due to populations that have become resistant to the commonly used herbicide glyphosate and glyphosate + paraquat. Two alternative herbicides have been identified in perennial cropping systems: sethoxydim and…