Université de Neuchâtel

White lupin leads to increased maize yield through a soil fertility-independent mechanism: a new candidate for fighting Striga hermonthica infestation?

Weisskopf, Laure ; Akello, Pollycarp ; Milleret, Roxane ; Khan, Zeyaur R. ; Schulthess, Fritz ; Gobat, Jean-Michel ; Le Bayon, Renée-Claire

In: Plant and Soil, 2009, vol. 319, no. 1-2, p. 101-114

Nitrogen (N)-deficiency and lack of phosphorus (P) availability are major constraints to maize yields in Western Kenya. In a two-season field study in the lake Victoria basin, we tested the capacity of white lupin (Lupinus albus (L.), cv. Ultra), as a nitrogen-fixing crop with a highly efficient P-acquisition capacity, to increase maize yields when used as a companion or cover crop,...

Université de Neuchâtel

Spatio-temporal dynamics of bacterial communities associated with two plant species differing in organic acid secretion: A one-year microcosm study on lupin and wheat

Weisskopf, Laure ; Le Bayon, Renée-Claire ; Kohler, Florian ; Page, Valérie ; Jossi, Maryline ; Gobat, Jean-Michel ; Martinoia, Enrico ; Aragno, Michel

In: Soil Biology and Biochemistry, 2008, vol. 40, no. 7, p. 1772-1780

Plants are generally assumed to influence the surrounding soil microflora through rhizodeposition. However, the role of rhizodeposits, and especially organic acids, in structuring the bacterial communities is still poorly understood. In this study, we asked the question whether plants differing in organic acid secretion have a different impact on the soil bacterial communities, and if this is the...