PARASITE news

New publication: Rhamphicarpa; a parasitic weed threatening rice in Africa

Jonne Rodenburg and Lammert Bastiaans published a review paper entitled: “Rhamphicarpa fistulosa, a widespread facultative hemi-parasitic weed, threatening rice production in Africa” in Weed Research. Abstract Rhamphicarpa fistulosa is a facultative hemi-parasitic plant of the Orobanchaceae family, adapted to wet soils. Apart from tropical Australia, it is only found in sub-Saharan Africa, where it is considered a minor weed in cereal crops such

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PhD defence Simon N’cho

On Monday 1 December 2014 Simon N'cho defends his PhD-thesis entitled: "Socio-economic impacts and determinants of parasitic weed infestation in rainfed rice systems of sub-Saharan Africa". The defence starts at 16hr and will be held at the Auditorium, building number 362 at the Generaal Foulkesweg 1, 6703 BG in Wageningen. Summary Rice is the world’s most important food crop in terms of the area harvested

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New paper: Can Striga and Rhamphicarpa co-occur in rain-fed rice?

Stella Kabiri's first paper has been published in Weed Research. The paper describes how Striga asiatica and Rhamphicarpa fistulosa are parasitic weeds of rain-fed rice that are partly distributed in similar regions in sub-Saharan Africa (SSA).  Particularly in Tanzania, these two parasites are present in farmers’ fields in the same rice growing landscape. The paper demonstrates a non-overlapping ecological range between the habitats of these two weeds that is dependent

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New paper: NERICA rice cultivars and their resistance to Striga

Please find attached a new paper on parasitic weeds published in Field Crops Research. The online link is: http://authors.elsevier.com/sd/article/S0378429014002883 Summary The parasitic weeds Striga asiatica and Striga hermonthica cause high yield losses in rain-fed upland rice in Africa. Two resistance classes (pre- and post-attachment) and several resistant genotypes have been identified among NERICA (New Rice for Africa) cultivars under laboratory conditions (in vitro) previously. However, little

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Parasite PhD Team at 50 Years WOTRO

Parasite PhD students Stella Kabiri, Dennis Tippe and Simon N’cho joined in the celebration to mark the 50th anniversary of WOTRO Science for Global Development. The theme of the conference WOTRO 50 Years was – Forward Thinking. The conference took place on Wednesday 15 October in the Museum for Communication at The Hague. In particular, the conference focused on the

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MSc-thesis defence Luuk van Dijk

On 29 September 2014, Luuk van Dijk defended his MSc-thesis research entitled: "Influence of parasitic weeds on rice-weed competition". Luuk was supervised by Lammert Bastiaans and Aad van Ast. Niels Anten was the external examiner of the thesis. Luuk's presentation can be found here. Thesis abstract Over the last decades rice (Oryza spp) became more important as a staple food crop

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APPLY NOW for the Global Rice Science Scholarship

APPLY NOW for the Global Rice Science Scholarship If you are about to enroll in or conduct your PhD research, you could be part of a new generation of rice scientists with a Global Rice Science Scholarship (GRiSS). The GRiSS offers young scientists the chance to be experts in a scientific discipline relevant to agriculture and to have a broader

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Blog on Parasitic Weeds: “Unknown rice parasite threatens harvests in Africa”

Few agronomists are familiar with Rhamphicarpa fistulosa, a fragile weed with white flowers, from the broomrape family. Yet this root parasite is increasingly affecting rice cultivation in Africa. This has become clear from the initial results of the research programme PARASITE on parasitic weeds in rice in sub-Saharan Africa. The rice pest was described by the Beninese agronomist Gualbert Gbèhounou

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New publication: Determinants of parasitic weed infestation in rainfed lowland rice in Benin

Simon N'cho and his team have published a research article entitled: "Determinants of parasitic weed infestation in rainfed lowland rice in Benin" in Agricultural systems. This paper explores factors that affect the infestation of rainfed lowland rice fields by the parasitic weed Rhamphicarpa fistulosa and farmers’ ability to cope with the problem. A double hurdle model is used, which analyses

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Presentation Jonne Rodenburg at Tropenzentrum, University of Hohenheim

In the evening of Monday 7 July 2014, Jonne Rodenburg had a talk on “Multi-disciplinary and multi-stakeholder approaches in crop protection – the case of parasitic weeds in rainfed rice systems in Africa” as part of the seminar series “Tropenzentrum Invites” of the Centre for Agriculture in the Tropics and Subtropics, University of Hohenheim. Tropenzentrum – wants to promote development

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