Amaranthus palmeri S.Watson.
A. palmeri with its rapid growth rate and ability to accumulate large quantities of biomass is very competitive and has also an advantage with its long roots. In the USA, A. palmeri is considered a significant weed in agricultural systems. Major impacts have been reported in soyabean, peanut, corn and sweet potato and the plant has become one of the most economically damaging weed species in the USA. This datasheet provides information on the taxonomic identity, geographical distribution, history of introduction and spread, morphology, biology and ecology, environmental and social impact, control, regulatory status and phytosanitary measures of A. palmeri.