Plant and Soil

, Volume 319, Issue 1–2, pp 101–114 | Cite as

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

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


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, or as a source of organic matter. Each experiment was performed on three different fields (Vertisols) differing in N/P availability, previous cropping history and in levels of infestation by the parasitic weed Striga hermonthica (Del.) Benth. Our results show that white lupin led to significantly higher yields of maize when used as a cover crop. When lupin was grown as a companion crop, it also slightly enhanced the yield of the co-cultivated maize. When lupin shoots were incorporated to the soil, the positive effect of lupin on maize growth was field-dependent and only occurred in the field most heavily infested with S. hermonthica. Despite the beneficial impact on maize yield, no clear effect of lupin on soil N and P availability or on maize N/P uptake were observed. In contrast, lupin significantly inhibited infestation of maize by S. hermonthica: when lupin was grown together with maize in pots inoculated with S. hermonthica, the emergence of the weed was strongly reduced compared to the pots with maize only. This work opens a new range of questions for further research on white lupin and its potential beneficial impact as a S. hermonthica-inhibiting crop.


Lupinus albus Desmodium uncinatum Striga hermonthica Zea mays Soil fertility Cluster roots 



This work has been supported by the Swiss National Science Foundation through a young researcher grant (PBNEA—110382). The authors are very grateful to Dr. Muyekho for the supply of white lupin seeds, to Prof. Michel Aragno and Prof. Enrico Martinoia for their encouragement and support and to Dr. Florian Kohler for his helpful advice in statistical questions. We wish to acknowledge Richard Obiero, Kennedy Otieno, Collins Omondi, Philip Owigo, Zablon Otieno and Eunice Auma for their assistance in the field work and Mathieu Goy for his help in the laboratory analyses.


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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Laure Weisskopf
    • 1
    • 4
  • Pollycarp Akello
    • 1
  • Roxane Milleret
    • 2
  • Zeyaur R. Khan
    • 1
    • 3
  • Fritz Schulthess
    • 3
  • Jean-Michel Gobat
    • 2
  • Renée-Claire Le Bayon
    • 2
  1. 1.International Centre of Insect Physiology and Ecology (ICIPE)MbitaKenya
  2. 2.Institute of Biology, Laboratory Soil and Vegetation, Emile Argand 11University of NeuchâtelNeuchâtelSwitzerland
  3. 3.International Centre of Insect Physiology and Ecology (ICIPE)NairobiKenya
  4. 4.Institute of Plant ScienceZürichSwitzerland

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