Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 445248
Title Fusarium oxysporum f.sp. cepae dynamics: in-plant multiplication and crop sequence simulations
Author(s) Leoni, C.; Vries, M. de; Braak, C.J.F. ter; Bruggen, A.H.C. van; Rossing, W.A.H.
Source European Journal of Plant Pathology 137 (2013)3. - ISSN 0929-1873 - p. 545 - 561.
DOI http://dx.doi.org/10.1007/s10658-013-0268-6
Department(s) Farming Systems Ecology
Biometris (PPO/PRI)
Biometris (WU MAT)
Biological Farming Systems
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2013
Keyword(s) f-sp melonis - ecological intensification - verticillium-dahliae - disease suppression - population-dynamics - organic amendments - soilborne diseases - farming systems - root diseases - wilt pathogen
Abstract To reduce Fusarium Basal Rot caused by Fusarium oxysporum f.sp. cepae (Foc) through crop rotation, plant species should be selected based on Foc multiplication in their roots. Foc multiplication rates in 13 plant species were tested in a greenhouse. All plant species enabled Foc multiplication. The lowest Foc levels (cfu g-1 dry root) were found for wheat, sunflower, cowpea and millet, the highest for black bean. The highest Foc levels per plant were calculated for sudan grass. These data were used to calibrate the model Pf¿=¿Pi/(a¿+¿ßPi) relating final (Pf) and initial (Pi) Foc levels in the soil. The rate of population increase at low Pi (1/a) was highest for onion and black oat and smallest for sunflower. The pathogen carrying capacity (1/ß) was highest for black oat and black bean, and lowest for wheat, cowpea and foxtail millet. Foc soil population dynamics was simulated for crop sequences by concatenating Pi-Pf values, considering instantaneous or gradual pathogen release after harvest. Different soil Foc populations were attained after reaching steady states. Foc populations in the sequence onion –foxtail millet - wheat – cowpea were 67 % lower than in the sequence onion – sudan grass - black oat - black beans. In this work, by combining detailed greenhouse experiments with modelling, we were able to screen crops for their ability to increase Foc population and to explore potential crop sequences that may limit pathogen build-up
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