Why the green peach aphid is such a successful pest

Myzus persicae (green peach aphid); an alate (winged) adult
Myzus persicae (green peach aphid); an alate (winged) adult

Recent research highlights why the green peach aphid (Myzus persicae) is one of the most successful crop pests. These findings will help further the development of effective management and control measures which will ultimately reduce worldwide crop losses.

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Agriculture and food security — where are we headed in 2017?

By Lisa Cornish. Reblogged from DEVEX.

A young woman in a rice field in Myanmar. Photo by: Bioversity International / CC BY-NC-ND

As climate change impacts the global ability to grow food, both in quality and quantity, researchers in agriculture have become an important asset for establishing long-term food security as the world’s population continues to increase.

In December, agriculture and food security researchers visited Canberra for high-level discussions on development matters with the Australian Center for International Agricultural Research and Department of Foreign Affairs and Trade. And as 2017 will be an important year for establishing long-term goals and making important inroads into advances within the sector, Devex spoke with attendees to better understand where we are headed.

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Tune in to the Cassava show

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Farmer listening group; photo David Onyango, CABI

Last week in the Nkhotakota region of Malawi a new radio show went on air. Not a news programme or a music show, but a show devoted to Cassava. Sounds pretty specific? Well, it’s even more focussed than that. The weekly 30 minute programme is actually focussed on managing one of Cassava’s most damaging diseases – Cassava mosaic disease.

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Our favourite recipes – Ghana

Recipe courtesy of Hannah Serwaa Numah

Following Claire’s series of posts on ‘making the most of the Plantwise knowledge bank’, I’d now like to introduce our next mini-series, which asks our country partners for their favourite recipes using top crops brought into plant clinics in their countries, so we can share them with you! Our first recipe comes from Hannah Serwaa Numah, who is the National Data Manager for Ghana. She tells us how to cook okro stew and akple, which is a traditional Ghanaian dish made from dried corn flour.

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Grand Challenges – inspiring next generation plant pathologists

Julie Flood, Phil Taylor and Claire Beverley attended the ‘Grand Challenges in Plant Pathology study group’ event at the Doctoral Training Centre, University of Oxford, 14-16 September. The event was the first of its kind, aiming to engage and inspire the next generation of plant pathologists.

Biotechnology lab The event was sponsored by the British Society of Plant Pathology (BSPP), the American Phytopathological Society (APS) and CABI, and saw 5 real problems posed by industry and non-academic organisations to a group of 27 young scientists, post-docs and graduate students, in all aspects of plant pathology and plant sciences.

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South American tomato leaf miner, Tuta absoluta, reported in Nepal for the first time

South American tomato leaf miner, Tuta absoluta (Meyrick), has been reported in a tomato farm for the first time in Nepal and the presence has been confirmed in five districts, Kathmandu, Lalitpur, Bhaktapur, Kavrepalanchowk and Dhading district. Studies carried out by the Nepal Agricultural Research Council (NARC) in May and June this year have identified and confirmed the presence of the pest in 14 locations in the five districts mentioned above. The highest infestation was identified in two districts, Ugrachandi Nala-2 and Panchakhal of Kavrepalanchowk district.

tuta-absoluta
T. absoluta damage on tomato. Copyright: Peter Kodwaran, Ministry of Agriculture Livestock and Fisheries (MoALF), Kenya

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La Necrosis letal del maíz amenaza la producción en América del Sur

English version below the break.
Artículo elaborado por Joao A. Jeque Junior, Léna Durocher-Granger y José Gómez Vargas.

La enfermedad conocida como la necrosis letal del maíz (MLN, por sus siglas en inglés), causada por la co-infección de dos virus, está amenazando la producción de maíz en el Ecuador. Según el Ministerio de Agricultura, la incidencia y severidad de la enfermedad fue de casi 14% en 2016 y estaba presente en las provincias de Guayas, Los Ríos, Manabí y Loja. Aunque no está claro cómo y cuándo la enfermedad entró en el país, se están haciendo esfuerzos por las organizaciones nacionales de protección fitosanitaria para controlar la propagación de la enfermedad, así como para cuantificar los daños.

Maize lethal necrosis disease symptoms. Naivasha, Kenya. March 2
Síntomas de la Necrosis letal del maíz/Maize lethal necrosis disease symptoms. Naivasha, Kenya. March 2012 (©CABI/Rob Reeder-2012)

Esta enfermedad es causada por la co-infección del virus del moteado clorótico del maíz (MCMV) y del virus  mosaico de la caña de azúcar (SCMV). En África, se detectó la enfermedad por primera vez en 2011 en el distrito de Bomet, Kenia. En 2012 un estudio realizado en los distritos de Bormet y Naivasha, Kenia, mediante la secuenciación de alto rendimiento de muestras de hojas de maíz recogidas en la clínica de plantas Plantwise, ayudó a confirmar la presencia del virus MCMV y SCMV en el maíz (Adams et al., 2012). Debido a  que la enfermedad puede propagarse rápidamente (en menos de una semana), en  4 años se han reportado casos de la sintomatología de la enfermedad en Tanzania, Ruanda, Uganda, Sudán del Sur y la República Democrática del Congo (RDC), y su presencia se confirmó en Tanzania y RDC en 2012 (Makumbi & Wangai, sin fecha).

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