6871: 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.]
(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.]. Master thesis, Organic Farming, IAMB Mediterranean Agronomic Institute of Bari. Published in Collection Master of Science IAMB-CIHEAM (International Centre for advanced Mediterranean agronomic studies) no. 352.
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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.
Additional Summary
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.
| Document Language: | English |
|---|---|
| Keywords: | compost, compost extract, soil properties, growth, nitrogen nutrition diagnosis, yield, storage |
| Subject Areas: | 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 |
| Total budget (Euro): | 0 |
| Orgprints ID Number: | 6871 |
| Contact: | Driouech, Noureddin |
| Deposited On: | 12 November 2007 |
| EPrint Type: | Thesis |
| Published?: | Unpublished |
| Peer Review Status: | Peer-reviewed and accepted |
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