Simulation analysis of crop rotation effects on weed seedbanks

A population-projection model was developed for a depth-structured weed seed population (employing transition matrices to model seed survival, germination, and vertical movement) and plant survival and seed production. Abutilon theophrasti and Setaria viridis seedbank dynamics were simulated in cont...

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Bibliographic Details
Published in:American journal of botany 1995-03, Vol.82 (3), p.390-398
Main Authors: Jordan, N. (University of Minnesota, St. Paul, MN.), Mortensen, D.A, Prenzlow, D.M, Cox, K.C
Format: Article
Language:English
Subjects:
ABUTILON THEOPHRASTI
AVENA SATIVA
BIOLOGIA
BIOLOGIE
Botany
CONTROL CULTURAL
Corn
Crop rotation
Crops
DESHERBAGE
ESCARDA
GERMINACION
GERMINATION
GLYCINE MAX
GRAINE
LUTTE CULTURALE
MALEZAS
MATEMATICAS
MATHEMATIQUE
MAUVAISE HERBE
MODELE DE SIMULATION
MODELE MATHEMATIQUE
MODELOS DE SIMULACION
MODELOS MATEMATICOS
Plants
ROTACION DE CULTIVOS
Rotation
ROTATION CULTURALE
Seed Fates: Importance for Structuring Plant Populations and Communities
Seed production
Seeds
SEMILLA
SETARIA (GRAMINEA)
SETARIA (GRAMINEE)
SUPERVIVENCIA
SURVIE
Tillage
TRIFOLIUM REPENS
Weed control
Weed seed banks
Weeds
ZEA MAYS
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Description
Summary:A population-projection model was developed for a depth-structured weed seed population (employing transition matrices to model seed survival, germination, and vertical movement) and plant survival and seed production. Abutilon theophrasti and Setaria viridis seedbank dynamics were simulated in continuous corn and in two crop rotations (corn-soybean and oat clover-corn-soybean-corn). Results suggest that crop rotation can nearly eliminate S. viridis seedbanks, while A. theophrasti seedbanks are less affected. Sensitivity analysis indicated that variation in seed survivorships over winter influenced population dynamics most strongly. Other seed survivorships were also highly influential, while plant survivorships and per-plant seed production had smaller effects. These results highlight the potential value of weed control measures aimed at seed
ISSN:0002-9122
1537-2197
DOI:10.1002/j.1537-2197.1995.tb12644.x