Update: New Pest & Disease Records (24 Jun 15)

Phytophthora species cause significant damage to natural and agricultural systems © Scot Nelson, via Flickr

Phytophthora spp. cause significant damage to natural and agricultural systems © Scot Nelson, via Flickr

We’ve selected a few of the latest new geographic, host and species records for plant pests and diseases from CAB Abstracts. Records this fortnight include the first report of the tomato russet mite in northern Chile, Cytospora species associated with walnut canker disease in China, and globalisation, the founder effect, hybrid Phytophthora species and rapid evolution causing headaches for biosecurity.  Read more of this post

Update: Plant Health News (17 Jun 15)

Coffee cherries in Thika, Kenya, photo by Rogiro

Coffee cherries in Thika, Kenya, photo by Rogiro

Contributed by Fiona Bunn

Here’s a taste of some of the latest stories about plant health, including the development of a new App in Kenya to help farmers select climate-smart seeds to maximise production, the use of drones to boost banana grower’s productivity in Columbia and new findings about how greening disease wreaks havoc in the citrus industry.

Click on the link to read more of the latest plant health news!
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Update: New Pest & Disease Records (10 Jun 15)

Panama wilt has been isolated from Dwarf Cavendish bananas in Pakistan © David Jones

Panama wilt has been isolated from Dwarf Cavendish bananas in Pakistan © D. Jones

We’ve selected a few of the latest new geographic, host and species records for plant pests and diseases from CAB Abstracts. Records this fortnight include the first report of Panama wilt disease of banana caused by Fusarium oxysporum f. sp. cubense in Pakistan, the first report of dieback of olive trees caused by Neofusicoccum australe in Tunisia and the first report of Pestalotiopsis menezesiana causing leaf blight of coconut in Hainan, China. 

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Update: Plant Health News (03 Jun 15)

Coffee is one of the crops that is vulnerable to the effects of climate change © Neil Palmer (CIAT)

Coffee is one of the crops that is vulnerable to the effects of climate change © Neil Palmer (CIAT)

Here’s a taste of some of the latest stories about plant health, including the use of maize to protect Colombian coffee from the effects of climate change, floods affecting rice in Kabuye, Rwanda and the role of urban farms in the fight for food security in Kenya.

Click on the link to read more of the latest plant health news!
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Wheat production in Pakistan – Producción de trigo en México

Infected wheat by P. striiformis/Trigo infectado por P. striiformis (Z. Kang)

Infected wheat by P. striiformis/Trigo infectado por P. striiformis (Z. Kang)

Pakistan

According to Reuters (source provided by ProMED-mail), farmers from districts southeast of Islamabad in Punjab province have seen their crops affected by unusual weather this year. First affected by hailstorm and now by heavy rain and cold weather, wheat fields of the region have been damaged severely. Some farmers have lost up to 70 % of their fields and are still waiting to harvest their crops three weeks behind schedule. Experts said that delays in harvesting and damaged plants can increase the chances of attack by yellow rust also called stripe rust (Puccinia striiformis). The fungal disease causes yellow leaf stripes, loss of vigour and stunting of plants.

Extension officers can review factsheets provided by Plantwise such as the Green and Yellow list written in Zambia* and the Plantwise technical factsheet on yellow rust to create a new and country-specific extension message for Pakistan on how to prevent and manage the disease.

*Please note that the pesticides mentioned in this factsheets are specific to Zambia and before giving recommendations check against your national registered pesticide lists.

México

Según El Diario (fuente proporcionada por ProMED-mail), la producción de trigo en la región de Nuevo Casas Grandes (Chihuahua) se ve afectada por la roya amarilla (causada por el hongo Puccinia striiformis) cual ocasionará una disminución del rendimiento. La roya amarilla es una enfermedad muy agresiva en condiciones favorables para su desarrollo (agua libre, temperatura de 10-15 °C y viento) y cuando se usó variedades susceptibles. Es la enfermedad que produce mayores pérdidas en el cultivo del trigo debido a su gran capacidad de dispersión a largas distancias. Se identifica por la formación des estrías estrechas en las hojas, pérdida de vigor y retraso en el crecimiento de las plantas.

Los extensionistas pueden revisar las hojas informativas de Plantwise como la Lista Verde y Amarilla elaborada en Zambia* y la hoja técnica de Plantwise sobre la roya amarilla para crear material nuevo y específico para México sobre cómo prevenir y manejar la enfermedad.

*Por favor, tenga en cuenta que las pesticidas indicadas en la hoja informativa son específicas para Zambia y antes de dar recomendaciones verificar la lista de pesticidas registradas en su país.

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Factsheet of the month: June 2015 – Conservation of natural enemies

20147801387Friday May 22nd was 2015’s International Day for Biological Diversity.  This year’s theme was ‘Biodiversity for Sustainable Development’ which reflected the importance of biodiversity in achieving the Sustainable Development Goals. Biodiversity is key in agriculture and it both promotes and is promoted by sustainable methods. Farmers rely on a range of different species for the success of their crops. This may include barrier or repellent crops to prevent pests from attacking their crop, nitrogen fixing bacteria in the soil for nutrient availability, pollinators to transfer pollen between plants, and natural enemies to keep pest populations under control without the need for chemicals.

This month’s Factsheet of the Month, ‘Conservation of natural enemies of pests of vegetables‘ provides information about the role that natural enemies can play and the importance of maintaining populations of natural enemies in the field. This factsheet was written by staff from the Plant Protection Service in Sri Lanka. It is also available in Tamil and Sinhala.

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Update: New Pest & Disease Records (27 May 15)

Mycodiplosis larvae could be used as biocontrol for rust fungi © Malcolm Storey 2012, bioimages.org.uk

Mycodiplosis larvae could be used as biocontrol for rust fungi © Malcolm Storey 2012, bioimages.org.uk

We’ve selected a few of the latest new geographic, host and species records for plant pests and diseases from CAB Abstracts. Records this fortnight include the first report of rosemary leaf spot caused by Nigrospora oryzae in Iran, one new species and six new records of Thripinae from bamboo in Malaysia and a new record of Mycodiplosis sp. as a potential biocontrol agent of Phakospora ampelopsidis.

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