Weedy rice is an agricultural pest with a global economic impact. It is an aggressive weed that outcompetes cultivated rice and causes billions of dollars in yield losses worldwide. A study from Washington University in St. Louis offers new insights into genetic changes that give weedy rice its edge over cultivated rice in tropical regions of the world.
Tag: weed
Medical cannabis use in Australian patients with chronic health issues linked to significant improvements in overall health-related quality of life and fatigue levels
Cannabis therapy also linked to improvements in anxiety, depression, and pain levels—though no changes in sleep disturbance levels reported.
Pesticide Contaminants in Water Test Kit, an Innovation from Chula for Safe and Sustainable Agriculture
Farmers in Thailand still largely use chemical herbicides, especially paraquat and atrazine, to control weeds on their farms. According to research by the Office of Agricultural Economics, in 2019, Thailand imported almost 10 million kilograms of paraquat and close to 3.5 million kilograms of atrazine. The residues of these herbicides cause harm to the environment, living creatures, and our health.
Codeine demand drops when recreational marijuana is legal
States that permit recreational use of cannabis see a reduction in demand for prescription codeine, an opioid with a high potential for misuse.
Weedy rice has become herbicide resistant through rapid evolution
Biologists used whole-genome sequences of 48 contemporary weedy rice plants to show how herbicide resistance evolved by gene flow from crop rice. Almost all other cases of herbicide resistance in agricultural weeds result from selection of tolerant genotypes in the weed species.