The Effects of Soil Bulk Density on the Morphology and Anchorage Mechanics of the Root Systems of Sunflower and Maize

The effects of soil bulk density and hence strength on two contrasting species of herbaceous annuals, the dicot sunflower (Helianthus annuusL.) and the monocot maize (Zea maysL.), were investigated by comparing the morphology and mechanics of field-grown plants in soil with a low and high bulk densi...

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Bibliographic Details
Published in:Annals of botany 1999-03, Vol.83 (3), p.293-302
Main Authors: GOODMAN, A.M., ENNOS, A.R.
Format: Article
Language:English
Subjects:
Agrology
anchorage mechanics
bulk density
compaction
Corn
Helianthus
Helianthus annuusL
lodging
Plant roots
Plants
Root growth
Roots
Roots, compaction, soil strength, anchorage mechanics, bulk density, thigmomorphogenesis, lodging,Helianthus annuusL.,Zea maysL
Soil mechanics
Soil penetration resistance
Soil strength
Soil treatment
Sunflowers
thigmomorphogenesis
Zea
Zea mays
Zea maysL
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Summary:The effects of soil bulk density and hence strength on two contrasting species of herbaceous annuals, the dicot sunflower (Helianthus annuusL.) and the monocot maize (Zea maysL.), were investigated by comparing the morphology and mechanics of field-grown plants in soil with a low and high bulk density. Soil with a low bulk density had a significantly lower penetration resistance (118±4.4 kPa) than the high bulk density soil (325±12.2 kPa;P
ISSN:0305-7364
1095-8290
DOI:10.1006/anbo.1998.0822