Aid donors join forces to fight wheat rust
Emerging strains of stem rust disease of wheat, such as Ug99, are spreading out of East Africa and threatening the world’s wheat supply. But the fight against this disease received a boost this week from a collaboration between the UK’s Department for International Development (DFID) and the Bill & Melinda Gates Foundation. The organisations have…
Does rust-free rice hold the secret?
All cereals, except rice, are susceptible to rust. Wheat, maize, barley, millet, triticale, and oats all get rust. The spores of rust fungi land on a host plant, germinate, and grow toward a stomatal pore on the leaf surface to initiate infection. Rust infections produce red or yellow pustulating spores that give infected plants a…
Hessian fly heading for the sack
Wheat crops suffer millions of dollars’ worth of damage each year due to the hessian fly, Mayetiola destructor. The most effective control method is genetic resistance, when wheat resistance genes cause death of the attacking larvae by activating a defense response against avirulent hessian flies. Unfortunately this has led to flies that can overcome resistant…
Fast but furious: High yielding plants linked to poor pest resistance
Breeding plants for fast growth and high yield may make them more susceptible to pests and diseases. New research from the University of Zurich using the model plant Arabidopsis thaliana has confirmed long suspected theory, showing that when plants put more resources into growth they often shut down some defence genes.
1000 new ‘Plant Doctors’ trained in Karnataka
Nearly 1000 farmers in Karnataka are set to be trained as ‘Plant Doctors’ in a major programme funded by the Karnataka State Department of Agriculture and Bio-Control Research Laboratories (BCRL), part of Pest Control India Ltd. (PCI), and supported by CABI. By the end of March 2011 there will be enough trained plant health workers…
California on alert against citrus psyllid
The detection of the Asian citrus psyllid (Diaphorina citri) in a citrus grove in Ventura County, California, has set alarm bells ringing in the Californian citrus industry, and led to the imposition of a quarantine in the County just as the citrus harvest was getting under way. The psyllid, now found throughout Florida and present…
How will climate change affect plant health?
As weather patterns shift around the world due to changing climates, so this brings new challenges to crop protection. Pests and diseases can become a problem in new areas, or appear earlier, making it necessary to change crop protection practices. Conversely, some pests and diseases may become less of a problem as conditions become less…
Would you miss the mistletoe?
I was thinking “what shall I write about in my Christmas blog?” I then remembered a news item I heard in one of the BBC radio stations about the mistletoe being under threat of disappearing from our landscape. I searched for the news item in their news webpage and found it still there. The article…
Plantwise data collection trial
The trial of data collection from various plant clinics has been launched in Kenya and Uganda. The giving of advice to small holder farmers and the collection of data are both integral parts of the Plantwise program. The farmers wants to know how to address the problem with their crop whereas the data is of…
NZ kiwifruits hit by bacterial canker
Biosecurity New Zealand announced on Saturday that samples of New Zealand pollen have tested positive for the bacterial kiwifruit disease, Pseudomonas syringae pv. actinidiae (Psa). Results indicate that Psa may have been present in New Zealand for a number of years. The confirmation of Psa in New Zealand comes as a huge blow to the…