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The effects of compost and compost extract on soil properties and lettuce growth.

CAVOSKI, Ivana (2004) The effects of compost and compost extract on soil properties and lettuce growth. [Les effets du compost et des extraits de compost sur les propriétés du sol et sur la croissance de la laitue.] Thesis, IAMB Mediterranean Agronomic Institute of Bari, Organic Farming. Collection Master of Science IAMB-CIHEAM (International Centre for advanced Mediterranean agronomic studies), no. 352. . [Unpublished]

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Summary

The work was conducted at the experimental field of the Mediterranean Agronomic Institute of Bari, Italy in 2004. The aim was to study the effects of compost and compost extract on soil properties and lettuce growth. The chemical, biological and phytotoxic tests of compost extract proved its high selected soil properties (pH, EC, Organic matter, available nutrients, cations and anions contents) markedly with depth and time, the most prominent changes showed by compost extract application. The applications of compost and compost extract significantly increased lettuce growth, yield, yield components and storage, all were highly significantly influenced by compost. The relation between chlorophyll-meter readings and nitrogen concentration showed highly significant linear regression and provided evidence that the chlorophyll-meter could be used to determine side dressing N requirements. The benefits of the compost and compost extract without chemical fertilizer demonstrated the validity and possibility of sustainable agronomic performance of lettuce using available recycled organic materials.

Summary translation

Ce travail a été mené dans la parcelle expérimentale de l’IAM de Bari, Italie en 2004 pour étudier les effets du compost et de ses extraits sur les propriétés du sol et sur la croissance de la laitue. Le test chimique, biologique et phytotoxique des extraits de compost a montré sa qualité élevée. L’administration du compost et des extraits de compost a améliorée les propriétés du sol (pH, CE, substance organique, nutriments disponibles, teneur en cations et anions) en profondeur et dans le temps. Les applications de compost et des extraits de compost ont augmenté la croissance de la laitue, le rendement, les composants du rendement, tous influencés par le compost. La relation entre la lecture du chlorophylle-mètre et de la teneur en azote a montré une régression linéaire importante et l’importance du chlorophylle-mètre pour déterminer les besoins en azote. Les bénéfices du compost et des extraits de compost sans engrais chimiques mettent en évidence la validité de la performance agronomique de la laitue en utilisant des substances organiques recyclées.

EPrint Type:Thesis
Thesis Type:Master thesis
Keywords:compost, compost extract, soil properties, growth, nitrogen nutrition diagnosis, yield, storage
Subjects: Soil > Nutrient turnover
Crop husbandry > Production systems > Vegetables
Soil > Soil quality
Crop husbandry > Composting and manuring
Research affiliation: Italy > IAMB Mediterranean Agronomic Institute Bari
Italy
Deposited By: Dr. Driouech, Noureddin Ph.D
ID Code:6871
Deposited On:12 Nov 2007
Last Modified:12 Apr 2010 07:32
Document Language:English
Status:Unpublished
Refereed:Peer-reviewed and accepted

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