Update: New Pest & Disease Records (30 Nov 11)

We’ve selected a few of the latest new geographic, host and species records for plant pests and diseases from CAB Abstracts. Click on the links to view the abstracts.

To view all search results for new geographic, host and species records for plant pests and diseases, click here (>29,000 results)

If there’s another new record you’d like to highlight, please post a Comment.

Virtual farming becomes a reality

Screenshot of a farming app, image from TheAppera

The modern world seems to have an increasing fascination with virtual farming, as more and more of us are downloading applications like ‘FarmVille’ and ‘Zombie farm’. For farmers in Tanzania growing crops successfully is much more than a game, but they are now joining smartphone users to try to increase their yields and crop profitability.

The use of more sophisticated technology is not a new idea for many farmers (the Ethiopian Commodity Exchange is a good example of a successful pilot project), but there have recently been optimistic reports from a new project set up in Tanzania. Farmers provided with smartphones can use GPS modules and applications that support picture and video transmission to share their knowledge on local pests, diseases and treatments. This may then allow scientists to retrieve and record this information for further study, too.

Clash of the food security threats

“On a planet with sufficient food for all, a billion people go hungry.”
The Commission on Sustainable Agriculture and Climate Change

The growing global population will continue to need more staple foods such as wheat © Brad Smith

As the global population grows, it is not just one factor that threatens food security but several interconnected threats that will continue to make it difficult to produce enough food for everyone. The combination of population growth, climate change and inefficient use of resources will continue to pressurise the food system, and a concerted effort will have to be made to tackle these issues. A new report from the Commission on Sustainable Agriculture and Climate Change details the actions that will need to be co-ordinated globally to achieve food security as the climate changes.
Read more of this post

Update: Plant Health News (22 Nov 11)

Here’s a taste of some of the latest news stories about plant health:

If there’s another news story you’d like to highlight, please post a comment.

Cassava – another superhero unmasked?

Cassava after infection from CBSD, Photo by IITA

For those of you keeping a watchful eye on the plant health news feed, you may have noticed a recurring theme around the topic of cassava crops in East Africa over the last few days. Cassava, a staple crop across sub-Saharan Africa, has been the subject of a well-established battle against Cassava Mosaic Disease (CMD), but the recent spread of a new viral disease, Cassava Brown Streak Disease (CBSD), could cause both epidemic food shortages and a huge loss of income to farmers across the region.

Read more of this post

How plant diseases attract plant pests

Aster leafhopper – one of the species of sap-sucking bugs that transmits phytoplasma © Whitney Cranshaw, Colorado State University, Bugwood.org

In the same way that mosquitoes transmit the malaria-causing parasite, Plasmodium, between humans, some species of leafhopper transmit phytoplasma bacteria between plants. Phytoplasmas are bacterial pathogens that infect the plant phloem and require sap-sucking bugs to transport them to other plants. Researchers at the John Innes Centre on Norwich Research Park have found that leafhoppers living on plants infected with phytoplasma produced more offspring. This is the first time that a particular protein in the bacteria has been found that reduces the plants’ defensive reactions to pests such as leafhoppers, allowing the bugs to thrive.
Read more of this post

Update: New Pest & Disease Records (16 Nov 11)

We’ve selected a few of the latest new geographic, host and species records for plant pests and diseases from CAB Abstracts. Click on the links to view the abstracts.

To view all search results for new geographic, host and species records for plant pests and diseases, click here (>29,000 results)

If there’s another new record you’d like to highlight, please post a Comment.

New Technology Sniffing out Pests

A recent meeting of crop experts has revealed some new ideas for detecting the presence of crop pests before they strike. These ideas include sampling the air for pathogen traces, measuring volatile organic compounds and detecting decreases in leaf tissue content.

Read more of this post

Ozone pollution negatively affects crop yields

Crops, such as maize, in areas of drought have a reduced ability to respond to low water availability when ozone levels are high. © Eloise Phipps/CIMMYT

It is predicted that, as levels of the air pollutant, ozone, continue to increase, they will be highest in areas of the world with the most rapidly increasing population levels. This is bad news for crop growers in developing countries, as it has been found that high concentrations of ground-level ozone can have a negative effect on yields of staple crops such as wheat and soybean.

A new article by Sally Wilkinson and colleagues at Lancaster Environment Centre and the Centre for Ecology and Hydrology provides a summary of how ozone pollution affects yield in a variety of crops and the resultant impacts on global food security.
Read more of this post

The papaya mealybug reaches Malaysia

Distribution of the papaya mealybug (screenshot
from the interactive distribution map at
www.plantwise.org) © CABI

Native to Mexico, the papaya mealybug (Paracoccus marginatus) is controlled in its home range by endemic natural enemies, like the parasitoid Acerophagus papayae. When the papaya mealybug invaded a number of countries in the neotropical region, including the Caribbean, US and parts of South America, encyrtid parasitoids (in particular A. papayae) were introduced to control these pest outbreaks. While these earlier invasions have been managed using biological control methods, the papaya mealybug has still spread to the oriental region, critically damaging papaya crops. In an attempt to restrain the effects of the papaya mealybug studies have been conducted across the region, leading to a recent report that the pest has now spread to Malaysia.

Read more of this post

Follow

Get every new post delivered to your Inbox.

Join 6,148 other followers