Competition for light between velvetleaf (<i>Abutilon theophrasti</i>) and soybean (<i>Glycine max</i>)

Akey, William C.; Jurik, Thomas W.; Dekker, Jack

doi:10.1111/j.1365-3180.1990.tb01728.x

Cited by 42 publications

(38 citation statements)

References 17 publications

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“…is a major weed of soybean (Glycine max L.) in the central United States. Much of the negative effect of velvetleaf on soybean yield appears to be due to competition for light (Akey et al 1990(Akey et al , 1991. As part of competition for light, the phenomenon of heliotropism, or solar-tracking (Ehleringer & Forseth 1980), may influence interactions between soybean and velvetleaf.…”

Section: Introductionmentioning

confidence: 99%

Solar-tracking leaf movements in velvetleaf (Abutilon theophrasti)

Jurik

Akey

1994

Vegetatio

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Leaves of velvetleaf (Abutilon theophrasti) exhibited solar-tracking movements in several experiments using different cultural conditions near Ames, IA, U.S.A. Freely moving leaves maintained a smaller angle between the normal to the leaf and the sun's rays than did leaves fixed in one position in both greenhouse and field experiments. Freely moving leaves had higher total daily carbon gain, transpiration, and water use efficiency than leaves fixed in a horizontal position. Leaves on different sides of the plant exhibited different abilities to track the sun, with leaves on the north side of the plant least able to track the sun.

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Section: Introductionmentioning

confidence: 99%

Solar-tracking leaf movements in velvetleaf (Abutilon theophrasti)

Jurik

Akey

1994

Vegetatio

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“…Some reported that a plant species can be at an advantage if its leaves were placed in the upper portion of the canopy (Haizel 1972;. Such positioning of LA has been described as being as important as total LA in determining species competitive ability (Akey et al 1990;Cudney et al 1991). The data of this study showed that vertical distribution of LA was altered in interspecific competition with soybean compared with monoculture-grown velvetleaf.…”

Section: Velvetleaf Seed Production In Mixed Stands (Final Harvest)mentioning

confidence: 99%

Influence of soybean row width and velvetleaf emergence time on velvetleaf (Abutilon theophrasti)

Hock

Knežević²,

Martin

et al. 2005

Weed Science

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Row spacing and the relative time of velvetleaf emergence affects the time of soybean canopy closure relative to velvetleaf, influencing the growth and development of velvetleaf. Field studies were conducted in northeastern Nebraska in 2002 and 2003 to describe velvetleaf growth as influenced by soybean presence or absence (velvetleaf grown with soybean or in monoculture), soybean row spacing (19 and 76 cm), and relative time of velvetleaf emergence. Velvetleaf seed production, leaf area (LA), and total dry matter (TDM) were greater in 76-cm- than in 19-cm-wide soybean rows. LA, TDM, and seed production of velvetleaf were reduced with later emergence times in both monoculture and with soybean. Velvetleaf LA, TDM, and seed production decreased when grown with soybean compared with when grown in monoculture. Practical implications of this study suggest that narrowing crop row spacing and controlling early-emerging velvetleaf in soybean can be an effective part of an integrated weed management strategy.

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“…Competition for light is the principal source of production losses caused by velvetleaf in various crops (Zanin and Sattin, 1988) and it is highly efficient at utilizing available light to produce dry matter (DM) (Akey et al, 1990). In addition, the small amount of light reaching infested cotton crops reduces their water (Munger and Chandler, 1986;Salisbury and Chandler, 1992) and nutrient use capacity.…”

Section: Competencia De Abutilon (Abutilon Theophrasti M) En Algodón mentioning

confidence: 99%

Competition of velvetleaf (Abutilon theophrasti M.) weed with cotton (Gossypium hirsutum L.). Economic damage threshold

Cortés

Mendiola

Castejon

2010

Span. j. agric. res.

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The effect of the weed Abutilon theophrasti M. (common name: velvetleaf) on the growth of cotton grown in the Guadalquivir Valley, was studied by examining the influence of weed density on growth of the weed and that of cotton. Velvetleaf impeded normal cotton growth caused production losses as a result of the stress the cotton was subjected to. Additionally there was competition among velvet leaf plants at high velvet leaf densities. The influence of velvetleaf density in coexistence with cotton has been also studied evaluating weed effect on the biomass of cotton and its production. Additional determinations included the velvetleaf seed production capacity per unit area and seed production per plant. These determinations were adjusted to hyperbolic, inverse linear and logistic models. Last, the economic damage threshold (EDT) was calculated using the efficiency level in control of velvetleaf in cotton. In this calculation the treatment cost and losses caused by the weed, in the crop, were taken into account. The EDT varied between 0.1 and 0.5 velvetleaf plant m-2, depending on the control methods used.

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Competition for light between velvetleaf (Abutilon theophrasti) and soybean (Glycine max)

Cited by 42 publications

References 17 publications

Solar-tracking leaf movements in velvetleaf (Abutilon theophrasti)

Solar-tracking leaf movements in velvetleaf (Abutilon theophrasti)

Influence of soybean row width and velvetleaf emergence time on velvetleaf (Abutilon theophrasti)

Competition of velvetleaf (Abutilon theophrasti M.) weed with cotton (Gossypium hirsutum L.). Economic damage threshold

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