Velvetleaf (<i>Abutilon theophrasti</i>) Effect on Corn (<i>Zea mays</i>) Growth and Yield in South Dakota

Scholes, Chad; Clay, Sharon A.; Brix‐Davis, K.

doi:10.1017/s0890037x00024027

Cited by 26 publications

(18 citation statements)

References 11 publications

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“…The EDT values presented here are lower than those obtained in maize by Zanin and Sattin (1988) (0.3-2.5 plant m -2 ), and Sattin et al (1992) (0.3-1.7 plant m -2 ), and in soybean by Scholes et al (1995) (4.3 plant m -2 ), as a result of increased velvetleaf competition with cotton relative to these crops. Velvetleaf shades cotton plants as it grows and therefore strongly competes with them for light.…”

Section: Discussioncontrasting

confidence: 77%

“…This is a linear adjustment between the percentage of soybean production loss and velvetleaf density (Bauer et al, 1991). In maize fields, however, production losses due to the presence of velvetleaf fit a hyperbolic model with a peak value of 37.2-40% and a loss weed unit -1 of 3.5-4.4% (Zanin and Sattin, 1988;Scholes et al, 1995).…”

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

confidence: 97%

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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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Section: Discussioncontrasting

confidence: 77%

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

confidence: 97%

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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“…For all 30 years of historical climate data, A. theophrasti was established at a density of 12 plants m −2 . Experiments run by Scholes et al . (1995 ) indicate that yield loss in maize approaches its maximum at this A. theophrasti density.…”

Section: Methodsmentioning

confidence: 99%

Model of crop:weed competition applied to maize:Abutilon theophrasti interactions. II. Assessing the impact of climate: implications for economic thresholds

McDonald

Riha

1999

Weed Research

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The practical application of single‐season economic thresholds for post‐emergence weed control decisions has been frustrated by the impact of growing season, climate and edaphic factors on crop:weed interactions. Competition in a mixed plant community is a dynamic process that is contingent upon species‐specific growth characteristics and their expression based on environmental conditions. To address these issues, a modified version of the ALMANAC competition model was parameterized and run to simulate maize:Abutilon theophrasti competition with 30 years (1966–95) of historical climate data for a site in New York State. Simulations indicate that, when weeds do not emerge before maize, maize will only suffer substantial yield reductions from A. theophrasti competition in two out of every 10 years at this site. It is also evident that economic thresholds based solely on the level of weed infestation are inherently flawed. Long‐term simulation results suggest that estimates of early season water stress could be used as an independent tool for rationalizing post‐emergence control decisions. Shifting the focus from quantifying the infestation intensity of the weed population to assessing the competitive status of the maize crop indirectly with climate information may alleviate many of the problems commonly associated with threshold management strategies.

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“…The competitive nature of velvetleaf makes it a serious problem in these row crops. Previous research has addressed the effect of velvetleaf density on growth and yield of soybean (Bahadar 1990;Dekker and Meggitt 1983;Eaton et al 1976;Munger et al 1987) and corn (Cardina et al 1995;Sattin et al 1992;Scholes et al 1995;Zanin and Sattin 1987). Few studies, however, have studied this relationship in the eastern U.S. Corn Belt or have included both corn silage and grain.…”

Section: Introductionmentioning

confidence: 99%

Velvetleaf (Abutilon theophrasti) Interference and Seed Production in Corn Silage and Grain

et al. 2004

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Studies were conducted during a 2-yr period measuring corn silage and grain yield and velvetleaf seed production in response to velvetleaf density. Velvetleaf densities of 0, 2, 5, 10, and 21 plants/m2were established in conventionally tilled corn. The percent corn yield reduction in response to velvetleaf density was similar for both years despite differences in total corn yield. Corn grain and silage yield responded differently to velvetleaf interference. Although both were adversely affected, silage yield reductions were twice that of grain at the low velvetleaf densities. A hyperbolic yield model predicted a maximum yield loss for corn silage and grain of 36 and 37% with incremental losses of 7 and 3%, respectively, as velvetleaf density increased. Velvetleaf seed production ranged from 2,256 to 4,844 seed/m2from the lowest to the highest density. This study demonstrates that corn silage yield is more sensitive than corn grain yield to velvetleaf interference, as well as how crop value plays an important role in determining economic thresholds. Finally, this research confirms the prolific nature of velvetleaf and shows that even at low densities, velvetleaf seed production could affect weed control decisions for many seasons to come.

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Velvetleaf (Abutilon theophrasti) Effect on Corn (Zea mays) Growth and Yield in South Dakota

Cited by 26 publications

References 11 publications

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

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

Model of crop:weed competition applied to maize:Abutilon theophrasti interactions. II. Assessing the impact of climate: implications for economic thresholds

Velvetleaf (Abutilon theophrasti) Interference and Seed Production in Corn Silage and Grain

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