Velvetleaf (Abutilon theophrasti) Population Dynamics following a Single Year's Seed Rain

At a northern Iowa location, populations of 145, 203, 62, and 37 velvetleaf$\text{plants}/{\rm m}^{2}$emerged in the four years following seed production by 0.4 velvetleaf$\text{plants}/{\rm m}^{2}$growing in soybean. Annual velvetleaf densities in areas with no seed input averaged less than 6$\text...

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Bibliographic Details
Published in:Weed technology 1996-07, Vol.10 (3), p.581-586
Main Author: HARTZLER, R. G
Format: Article
Language:English
Subjects:
Biological and medical sciences
Corn
Fundamental and applied biological sciences. Psychology
Generalities, botany, ecology, damages, economic importance
Parasitic plants. Weeds
Phytopathology. Animal pests. Plant and forest protection
Planting
Plants
Population dynamics
Seed production
Seeds
Soybeans
Tillage
Weed control
Weeds
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Summary:At a northern Iowa location, populations of 145, 203, 62, and 37 velvetleaf$\text{plants}/{\rm m}^{2}$emerged in the four years following seed production by 0.4 velvetleaf$\text{plants}/{\rm m}^{2}$growing in soybean. Annual velvetleaf densities in areas with no seed input averaged less than 6$\text{plants}/{\rm m}^{2}$. At a central Iowa location, verticillium wilt reduced velvetleaf seed production, resulting in an average increase of$9\ \text{plants}/{\rm m}^{2}$in the two years following seed production compared to the control treatment. This type of information is necessary to develop economic optimum thresholds, but the variability between locations demonstrates the difficulty in predicting crop and weed responses to management strategies implemented early in the growing season.
ISSN:0890-037X
1550-2740
DOI:10.1017/s0890037x00040471