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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New device can detect crop pathogens by smell

By Philippa Merry. Reblogged from The Courier.

The E-nose could smell the earliest signals of diseases such as potato blight long before they become visually apparent

Dubbed an E-Nose, the equipment has been developed by engineers and scientists to detect crop pathogens by smell weeks before any infection becomes outwardly apparent or evident on any visual basis.

“It’s an amazing tool for early detection,” commented Kit Franklin, a lecturer of agricultural engineering at Harper Adams University.

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Zambia Battles Armyworms That Are Decimating Corn Fields

By Matthew Hill and Taonga Clifford Mitimingi. Reblogged from Bloomberg Markets.

Zambia must intensify its fight against an outbreak of armyworms that’s wiping out fields of the staple corn crop, posing a threat to the southern African nation’s food security, Vice President Inonge Wina said.

An armyworm. Photographer: Tim Roske/AP Photo

“They are posing a big threat to food security in the country,” she said in remarks broadcast Monday on Hot FM radio in Lusaka, the capital. “They have come with such a force of mass destruction that has to be faced head on. We need to put more effort into eradicating the worms.”

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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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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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Plant doctors to the rescue in integrated pest management

By Dyna Eam. Reblogged from the CGIAR CCAFS blog.

Farmer representatives and project team members of Rohal Suong Climate-Smart Village in Cambodia learn about rice pest management in light of climate change.

Many people attribute floods, droughts and cyclones to climate change and these natural disasters impact greatly on agricultural productivity. But recent scientific evidences show that pests are getting a boost from climate change. The increasing temperature and erratic rainfall cause pests and diseases to thrive and infest crops in wider ranges of places globally.

Read the full article on the CGIAR CCAFS blog →

Surveillance critical to halting deadly tomato pest

By Jackie Opara. Reblogged from SciDev.Net

tuta
© Marja van der Straten/NVWA Plant Protection Service/Bugwood – CC BY-NC 3.0 US

Effective surveillance and integrated pest management could curb the devastating impacts of tomato pest, Tuta absoluta, also called tomato leaf miner, which is ravaging the crop in Nigeria, experts say.

T. absoluta has affected most parts of northern Nigeria tomato farms in Kaduna state, causing a loss of more than 1 billion naira (about US$3.5 million), leading to rising tomato prices, according to the Centre for Agriculture and Biosciences International (CABI) — an organisation working with African governments and research institutions to monitor the spread of the pest.

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