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Master Thesis

Étude de l'impact des engrais verts sur les qualités physiques et biologiques des sols sableux en cultures maraîchères nantaises

Abstract : Highly specialized vegetable growing in the Pays de la Loire has constantly intensified during the last years. Consequently the sandy soil has started losing its fertility. This is evident in an increasing phytosanitary pressure and a leak in organic matter. Searching for a method to enhance soil quality through improving soil structure and soil life, the project Pathosol was created. Green manuring was chosen as an alternative to conventional chemical soil treatments. Thirteen green manuring assortments were tested. Their capacity of improving soil structure was analyzed on the basis of hydraulic conductivity and soil porosity measurements as well as through distinguishing macropores in size and shape. Effect of green manure on soil life was measured by scanning population densities of springtails, mites and nematodes. Soil sickness was estimated by analyzing the amount of fusarium attack on radish. Green manure improves soil structure via diminution of the hydraulic soil conductivity. The influence of green manure on soil life population is partly positive. Mite population is increasing. Springtail population is decreasing. The phytosanitary pressure of fusarium is low. In the continuation of the project, the effect of the ploughed fresh matter on soil structure, soil life and on soil health will be studied.
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Master Thesis
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https://dumas.ccsd.cnrs.fr/dumas-00907284
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Submitted on : Thursday, November 21, 2013 - 9:36:25 AM
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Dustin Lloyd. Étude de l'impact des engrais verts sur les qualités physiques et biologiques des sols sableux en cultures maraîchères nantaises. Sciences agricoles. 2013. ⟨dumas-00907284⟩

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