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Influence of simulated seed rain on the seed bank of wild-proso millet

Published online by Cambridge University Press:  20 January 2017

Bill J. Williams  and
R. Gordon Harvey
R. Gordon Harvey
Affiliation:
Department of Agronomy, University of Wisconsin, Madison, WI 53796
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Abstract

A field experiment was conducted between 1988 and 1993 to determine the number of wild-proso millet seed that could be returned to the soil without increasing future soil seed bank populations. The first seed bank (1988) was 15,300 seed m−2 and ranged from 14,000 to 21,000 seed m−2, which represented a high seed population for the area. Seed rain treatments of 0, 3, 6, 12, 24, and 48% of the 1988 soil seed bank were returned each fall. By 1993, more than 90% of the original millet seed bank had been depleted for all treatments. It was estimated that 77% of the seed rain and 68% of the spring seed bank were lost each year. As a result, wild-proso millet must produce approximately three times the seed in the soil to maintain a constant seed bank population.

Keywords

Wild-proso millet, Panicum miliaceum L. PANMIcorn, Zea mays L.soybean, Glycine max (L) MerrPopulation dynamicspredictionseed deathseed longevity
Type
Research Article
Information
Weed Science , Volume 50 , Issue 3 , June 2002 , pp. 340 - 343
Copyright
Copyright © Weed Science Society of America 

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