Yellow Dragon Disease: An Increasing Threat to Global Citrus Production

Yellow dragon disease, also known as citrus greening disease is one of the greatest bacterial threats to citrus trees on a global scale, affecting crop production across Africa, Asia and North America.
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Citrus Greening in Grenada

[youtube https://www.youtube.com/watch?v=KNlZQMRDNBU&w=560&h=315] Citrus Greening, also known as Huanglongbing, was first confirmed in Grenada in 2016. The disease is caused by bacteria which are spread by the Citrus psyllid. The disease causes yellow blotchy mottling on leaves, small lopsided fruit and branch dieback, making the tree uneconomical. Due to Citrus greening’s potential to devastate Citrus yields,…
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Citrus greening detected in Trinidad

Huanglongbing (HLB), also known as Citrus greening, has been confirmed in Trinidad for the first time. The disease, which was detected on leaves from a lime tree in the north of the island, can cause devastating yield loss for Citrus growers and is regarded as one of the most important threats to global commercial and…
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Citrus canker – a threat to orange production in Pakistan

Last week, key players in Pakistan’s orange production came together for the first Orange Exporters Awards, organised by the Pakistan Fruit and Vegetable Association and the Department of Plant Protection. During this meeting, Sikandar Hayat Khan Bosan, Pakistan’s Federal Minister for National Food Security and Research, announced that orange farms in the Sargodha region of…
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Update: Plant Health News (25 Mar 15)

Here’s a taste of some of the latest stories about plant health, including early reports on the damage caused by Tropical Cyclone Pam in Vanuatu, the first carbon neutral banana farm recognised in Costa Rica and training for Citrus farmers in Ghana on the use of technology to increase yields. Click on the link to read more…
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Combatting the “black spot” on citrus production in Ghana

Contributed by Melanie Bateman, Integrated Crop Management Adviser, CABI in Switzerland Not long ago, farmers in the Ashanti region of Ghana had seen citrus as a potential money-maker but now many are now giving up in despair as pathogens such as citrus angular leaf spot (Pseudocercospora angolensis) and citrus black spot (Guignarida citricarpa) diminish yields…
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Update: New Pest & Disease Records (11 Jun 14)

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 Phytophthora cinnamomi in the rhizosphere of agricultural crops in southern Bahia (Brazil),  the first report of Fusarium oxysporum f. sp. cubense tropical race 4 associated with Panama disease of banana outside…
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Update: Plant Health News (04 Jun 14)

Here’s a taste of some of the latest stories about plant health, including the discovery of a microbe that could help control rice blast, concern over the effects of erratic rainfall on crops in Somalia and the discovery of a gene encoding resistance to stem and fruit rot of pepper. Click on the link to read more…
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Amino acid stops citrus industry going sour

Lime Swallowtail by Tarique Sani, SANIsoft, Bugwood.org The citrus industry is of significant economic importance to the US, so when any potential pest appears on the horizon there is cause for concern. When the lime swallowtail (Papilio demoleus) was found in the Caribbean in 2006, scientists realised that it may only be a matter of time before these strong fliers appear…
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