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Mechanical weeding effects on soil structure under organic vegetables

Ball, Dr Bruce C (2006) Mechanical weeding effects on soil structure under organic vegetables. Poster at: Joint Organic Congress, Odense, Denmark, May 30-31, 2006.

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Summary

Mechanical weeding of vegetables involves the repeated use of cultivators and tractors. This repeated tillage and compaction changes soil structure. We studied these changes in fields of organic beans and carrots. Structure was described using visual assessment and by measuring soil strength. Under beans, the soil strength below the growing root zone was highly variable and in some areas was strong enough to restrict root growth. The carrots were grown in beds containing zones of crop and bare, weeded soil. The structure of the weeded soil in the top 10 cm layer eventually became disrupted and compacted enough to deter root growth. In addition the topsoil and subsoil in the wheel-tracks between the beds became very compact with little distinguish-able structure. This compaction extended to the sub-soil and persisted into the next cropping season.


EPrint Type:Conference paper, poster, etc.
Type of presentation:Poster
Subjects: Crop husbandry > Weed management
Crop husbandry > Soil tillage
Research affiliation: International Conferences > 2006: Joint Organic Congress > Theme 4: Crop systems and soils
Deposited By: Ball, Dr Bruce C
ID Code:7490
Deposited On:09 May 2006
Last Modified:12 Apr 2010 07:32
Document Language:English
Status:Published
Refereed:Not peer-reviewed

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