Lindquist, "Effect of nitrogen addition on the comparative productivity of corn and
velvetleaf (Abutilon theophrasti)" Weed Science, vol.
Impact of a seed-feeding insect and microorganisms on
velvetleaf (Abutilon theophrasti) seed viability.
Velvetleaf (Abutilon theophrasti Medik) is one of the main members in Malvaceae and it is a major annual weed in cropland [1].
ABUTILON THEOPHRASTI Medik.;
Velvetleaf; Gravel lot and adjacent field; Rare; C = 0; BSUH 17287.
One species, Abutilon theophrasti (
velvetleaf), is an introduced annual species that primarily occurs in open disturbed grassland habitats or at the edge of the woodland phase; while the other, Malvaviscus arboreus var.
Soybean (Glycine max) -
velvetleaf (Abutilon theophrasti) interspecific competition.
Velvetleaf (Abutilon theophrasti) competition and economic threshold in conventional- and notillage corn (Zea mays).
We studied naturally-occurring heliothine populations over a 3-year period in 2 different geographic locations in plots of garbanzo bean (Cicer arietinum L.), upland cotton (Gossipium hirsutum L.), and
velvetleaf (Abutilon theophrasti Medikus) finding that garbanzo bean produced significantly higher numbers of tobacco budworm and bollworm larvae and adults as compared to the other 2 plant species.
In the past, lawn and garden centers often advertised "mushroom soil," which essentially had been sitting outside in a pile for one or two years and had accumulated air-borne weed seeds (such as lambsquaters and
velvetleaf).
In one study, 99 percent of
velvetleaf seeds underwent microbial decay after 3 months, particularly when they were the only source of carbon available as food.
[C.sub.3] broadleaves were composed almost entirely (>95%) of three species; lambsquarters (Chenopodium album L.),
velvetleaf (Abutilon theophrasti Medik.) and Virginia copperleaf (Acalypha virginica L.); [C.sub.4] broadleaves were exclusively redroot pigweed (Amaranthus retroflexus L.) and Ca grasses consisted of barnyard grass [Echinochloa crus-galli (L.) R Beauv.], Bermuda grass [Digitaria sanguinalis (L.) Scop.] and foxtail (Setaria spp.).
Some of the most common weeds are dandelions, thistle, pigweed, lambsquarters, clover, milkweed, ragweed, purslane,
velvetleaf, and various grasses--in particular, crabgrass and quackgrass.
Greenhouse growth studies were conducted to determine if pHBA levels near the growth-inhibition threshold altered mineral content of
velvetleaf (Abutilon theophrasti Medic.) tissue, and if the level of available boron (B) modified pHBA effects.
"As an example, waterhemp and giant ragweed are quickly becoming the most troublesome weeds across the Corn Belt, while species such as lambsquarters,
velvetleaf, common ragweed and pigweeds remain consistent problems in corn.
ARS researchers Jay Radhakrishnan, John Teasdale and Ben Coffman in Beltsville, Md., tested vinegar on major weeds -- common lamb's-quarters, giant foxtail,
velvetleaf, smooth pigweed and Canada thistle -- in greenhouse and field studies.
