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

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© 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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Farming First and GACSA launch creative partnership to explore “Climate-Smart Agriculture in Action”

Contributed by Farming First

CSAOne billion farmers all over the world, responsible for growing the food that feeds the planet, are under unprecedented pressure from a changing climate. For eight months in a row now, temperatures have been the highest on record. Food shortages are affecting an estimated 100 million people in the wake of drought prompted by the strongest El Niño we have ever seen.

We urgently require ways of helping farmers preserve food security, and adapt to these harsher realities. We also need to ensure farmers can be part of the solution to climate change, given that food systems account for 19-29% of total greenhouse gas emissions.

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Campaigning for Safe Chemical Use in Uganda

A loud booming voice on a megaphone breaks the silence in the farming village of Kaptum centre..”Akwaa! lo mite kapurto nyepo ceyec cepo nyepokaptisyet!”, (come attend a plant health rally by ministry of agriculture officials). Farmers quickly gather and listen attentively as Ministry of Agriculture, Animal Industry and Fisheries (MAAIF) officials conduct the plant health rally.After the rally, we meet Betty Seyekwo, a hardworking farmer and mother of seven children living in Kapchorwa-Uganda. Last season, she planted beans in her 2 acre farm and harvested 13 bags. This was a decline from the previous season when she harvested 20 bags. Before changing crops to beans, Betty was predominantly a maize farmer until a strange disease wiped out her entire crop.

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How Gummy Stem Blight affects Christophene production in Trinidad

Contributed by Aldo Hanel and Naitram Ramnanan, CABI.

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The Northern Range region in Trinidad and Tobago is not only home to the most pristine and untouched areas of the country but it also provides the best agroecological environment for christophene (chayote) production in the country. Follow up from a sample brought to a plant clinic in 2015 revealed that the disease known as Gummy Stem Blight, caused by the fungus Didymella bryoniae, was pervasive in christophene farms in the Northern Range. Government reports show that since the outbreak of this disease, christophene production has dropped significantly.

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