Growth Analysis of Weed and Crop Species with Reference to Seed Weight

Growth and morphological characteristics of four weed and two crop species were analyzed to determine how small-seeded weeds can compete with large-seeded crops despite the initial size disadvantage. Small-seeded weeds had higher relative growth rates because of increased percentages of biomass devo...

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Bibliographic Details
Published in:Weed science 1993-01, Vol.41 (1), p.52-56
Main Authors: Seibert, Andrew C., Pearce, R. Brent
Format: Article
Language:English
Subjects:
abutilon theophrasti
Agronomy. Soil science and plant productions
amaranthus
Biological and medical sciences
biological differences
chenopodium
crecimiento
croissance
Crop harvesting
diferencias biologicas
difference biologique
Fundamental and applied biological sciences. Psychology
Generalities, botany, ecology, damages, economic importance
glycine max
grosseur des semences
growth
growth rate
helianthus annuus
indice de crecimiento
Leaf area
Net assimilation rate
Parasitic plants. Weeds
peso
Phytopathology. Animal pests. Plant and forest protection
Plant growth
Plant roots
Plants
poids
racine
raices
Root growth
roots
seed
seed size
Seed weight
semence
semillas
Soybeans
tamano de la semilla
taux de croissance
Weed Biology and Ecology
Weeds
weight
xanthium
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Summary:Growth and morphological characteristics of four weed and two crop species were analyzed to determine how small-seeded weeds can compete with large-seeded crops despite the initial size disadvantage. Small-seeded weeds had higher relative growth rates because of increased percentages of biomass devoted to leaves. This morphological scheme was achieved primarily through a reduction in the percentage of biomass devoted to roots. Yet, small-seeded weeds were able to develop larger mean plant root lengths as a result of having both roots of smaller diameter and higher rates of root length increase.
ISSN:0043-1745
1550-2759
DOI:10.1017/S004317450005757X