Cabbage disease mystery in Ghana

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Cabbage © iStock images

Cabbage is an important crop in Ghana where it grows all year round, right across the country. It is mainly grown for commercial production in Southern Ghana, in Akwapim and Kwahu areas and in the moist high elevations around Tarkwa.

Growing cabbage in Ghana is challenging since it can be attacked by a variety of pests, such as cabbage aphids, caterpillars, cabbage webworm, diamondback moth, mole cricket, snails and rodents. Worldwide, aphids are a major concern because they commonly spread plant-infecting viruses. These are often diagnosed as turnip mosaic virus and cauliflower mosaic virus, particularly in Europe and the US, according to Dr John Carr, University of Cambridge, UK (Phys.org, 2017).

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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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Scientists discover new crop-destroying Armyworm is now “spreading rapidly” in Africa

Scientists discover new crop-destroying Armyworm is now “spreading rapidly” in Africa

New research announced today by scientists at CABI confirms that a recently introduced crop-destroying armyworm caterpillar is now spreading rapidly across Mainland Africa and could spread to tropical Asia and the Mediterranean in the next few years, becoming a major threat to agricultural trade worldwide.

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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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BioClay pesticide spray successful in recent trials

Commercial field crop of tobacco (N. tabacum) (AgrEvo)
Commercial field crop of tobacco (N. tabacum) (AgrEvo)

Australian researchers have developed a new nanotechnology pesticide spray called BioClay which has shown success in recent trials.

Developed by the Queensland Alliance for Agriculture and Food Innovation (QAAFI) and the Australian Institute for Bioengineering and Nanotechnology (AIBN), BioClay contains double stranded RNA which can be sprayed onto a crop. When the RNA contacts the plant, the plant believes it is being attacked by a virus and protects itself.

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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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Sharing experiences of mitigating the impacts of Tuta absoluta

Contributed by Kritika Babbar, CABI India

ICBL.jpgClimate change has emerged as one of the most important environmental, social and economic issues today – especially for South Asia, which is highly impacted by these changes. In light of this, an international conference on Biodiversity, Climate Change Assessment and Impacts on Livelihood (ICBCL) was convened in Kathmandu from 10-12 January 2017. The conference was opened by Bidhya Devi Bhandari, the President of Nepal, and saw participation from eminent scientists, policy makers and development workers across the agriculture sector in South Asia.

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