Its stereo hyperspectral machine vision system allows the iron goat to be species-selective, so it can target invasive species like Bromus tectorum
(a noxious weed that invades grassland communities and displaces native plants), which often thrive in disturbed areas.
In the studied plots some ruderal species or plants typical for nitrophilous and often anthropogenic habitats were present: Poa bulbosa, Bromus tectorum
, Phleum graecum, Galium aparine or Parietaria serbica.
For example, Bromus tectorum
remained fully viable for up to approx.
Common name Scientific name Class Life cycle * Downy brome Bromus tectorum
Grass WA London rocket Sisymbrium irio Broadleaf WA Creeping thistle Circium arvense Broadleaf CP Yellow goats-beard Tragopogon dubius Grass SP Field bindweed Convolvulus arvensis Broadleaf CP Bermudagrass Cynodon dactylon Grass CP Foxtail barely Hordeum jubatum Grass SA Dandelion Taraxacum officinale Broadleaf SP Quackgrass Agropyron repence Grass CP Russian knapweed Acroptilon repens Broadleaf CP lambsquarters Chenopodium album Broadleaf SA Plantain Plantago spp.
For example, Evans and Young (1970) found that placing seeds of the annual Bromus tectorum
(cheatgrass) below 5 or 10 cm of herbaceous leaf litter increased fall and early spring emergence by 4- to 5-fold in a field experiment in the Great Basin Desert of western Nevada.
The research at El Reno focused on bermudagrass, Cynodon dactylon, alone and with a scattering of senescent downy brome, Bromus tectorum
, and yellow bristlegrass, Setaria glauca.
The meadow plant community was composed primarily of introduced annual forbs and grasses including Bromus tectorum
The three most common dominant herbaceous species were Artemisia tridentata (big sagebrush), Gutierrezia sarothrae (snakeweed), and Bromus tectorum
(downy chess grass); and the three most common dominant overstory and understory species were Juniperus monosperma (one-seed juniper), d.