In little over 20 yr, Palmer amaranth has risen from relative obscurity to its current status as
one of the most widespread, troublesome, and economically damaging agronomic weeds in …

Weeds are among the greatest pests of agriculture, causing billions of dollars in crop losses
each year. As crop field management practices have changed over the past 12 000 years …

North America has experienced a massive increase in cropland use since 1800,
accompanied more recently by the intensification of agricultural practices. Through genome …

The selection pressure exerted by herbicides has led to the repeated evolution of herbicide
resistance in weeds. The evolution of herbicide resistance on contemporary timescales in …

Amaranthus tuberculatus is the major weed species in many midwestern US row‐crop
production fields, and it is among the most problematic weeds in the world in terms of its …

Several grass and broadleaf weed species around the world have evolved multiple-
herbicide resistance at alarmingly increasing rates. Research on the biochemical and …

The evolution of herbicide resistance in weed populations is a highly replicated example of
adaptation surmounting the race against extinction, but the factors determining its rate and …

A taxonomic revision of the genus Amaranthus (Amaranthaceae) in Italy is here presented.
Field surveys were carried out during the period 2006–2014. 58 herbaria (both European …

Amaranthus tuberculatus is a major weed of crop fields in the midwestern United States.
Making this weed particularly problematic to manage is its demonstrated ability to evolve …

Widespread adoption of glyphosate-resistant crops and concomitant reliance on glyphosate
for weed control set an unprecedented stage for the evolution of herbicide-resistant weeds …