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geographical distribution

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Threats to cassava production: known and potential geographic distribution of four key biotic constraints

Insect pests and plant diseases reduce cassava yields substantially, posing a threat to food security throughout […]
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Superelongation disease, caused by Elsinoe brasiliensis, confirmed on cassava in Trinidad & Tobago

In 2007, a new disease was observed on cassava in fields in the north, south and […]
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Presence of banana xanthomonas wilt (Xanthomonas campestris pv. musacearum) in the Democratic Republic of Congo Republic (DRC).

In May 2004, following reports from local farmers of a devastating new banana disease, three authors […]
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Presence of banana bacterial wilt (Xanthomonas campestris pv. musacearum) in Rwanda

In September 2005, visits were made to five sites within the Gisenyi province in northern Rwanda […]
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Potential impact of climate change on termite distribution in Africa

Termites (Order: Isoptera) constitute an integral component of various ecosystems in Africa. Termites are also amongst […]
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Occurrence of Tomato mosaic Havana virus in Nicaragua

In May 2006, severe virus-like symptoms were reported on tomatoes by the plant health clinic in […]
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Identification of Xanthomonas vasicola (formerly X. campestris pv. musacearum), causative organism of banana xanthomonas wilt, in Tanzania, Kenya and Burundi

In Tanzania, banana xanthomonas wilt was first reported in the Kagera region of north west Tanzania […]
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Identification of Xanthomonas vasicola (formerly X. campestris pv. musacearum), causative organism of banana xanthomonas wilt, in Tanzania, Kenya and Burundi

In Tanzania, banana xanthomonas wilt was first reported in the Kagera region of north west Tanzania […]
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First report of the identification of Moroccan watermelon mosaic virus in papaya in Democratic Republic of Congo Republic

Pawpaw is the major cash crop in North Kivu, Democratic Republic of Congo Republic, where it […]
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First report of Pseudocercospora angolensis causing leaf and fruit spot of Citrus in Sierra Leone

In 2006, citrus fruit and leaves affected by dark brown lesions were noticed in orchards around […]
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First report of phytoplasmas affecting organoponic crops in central and eastern Cuba

Surveys of organoponics (organic and hydroponic systems) in Matanzas, Las Tunas and Stgo de Cuba provinces […]
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First report of Papaya ringspot virus infecting papaya in Cote d’Ivoire

In February 2006, pawpaw leaves with various symptoms, including yellow dots along the veins, yellow mosaic […]
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First report of Horsegram yellow mosaic virus infecting Phaseolus vulgaris in Sri Lanka

Bean (Phaseolus vulgaris) is one of the most important vegetables in Sri Lanka. In 1999, a […]
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First report of ‘Candidatus Phytoplasma trifolii’ (group 16SrVI) infecting Sauropus androgynus

During surveys conducted in October 2010, plants of Sauropus androgynus growing in small plots in Poring […]
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First report of an isolate of ‘Candidatus Phytoplasma australiense’ associated with a yellow leaf roll disease of peach (Prunus persicae) in Bolivia.

During a survey in 2003 at San Isidro, Santa Cruz, Bolivia, peach trees showed symptoms similar […]
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First report of a phytoplasma identified in coconut palms (Cocos nucifera) with lethal yellowing-like symptoms in Papua New Guinea

In October 2008, coconut plantations in the villages of Tobenam, Pupun and Dugumor, located in the […]
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First report of a ‘Candidatus Phytoplasma asteris’ isolate associated with a witches’ broom disease of alfalfa in Bolivia

During a survey in 2003 in Limon Pampa, Rio Chico, Bolivia, lucerne (Medicago sativa) plants showing […]
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First report of a 16SrIII phytoplasma (X-disease group) affecting bell pepper, strawberry (frutilla), Schinus molle and Arracacia xanthorrhiza in Cochabamba, Bolivia

Recently, symptoms of leaf size reduction and yellowing, proliferation, and shortening of internodes were observed in […]
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First report of a 16SrII (‘Candidatus Phytoplasma aurantifolia’) group phytoplasma associated with a bunchy-top disease of papaya in Cuba

Phytoplasmas of the 16SrII and 16SrXII groups were first reported to cause mosaic, yellow crinkle and […]
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First report of a 16SrII group phytoplasma associated with die-back diseases of papaya and citrus in Ethiopia

This is the first record of phytoplasmas associated with die-back diseases of papaya and citrus in […]
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First report of a 16SrI, Candidatus Phytoplasma asteris group phytoplasma associated with a date palm disease in Saudi Arabia

In a survey conducted at Al-Hassa, Saudi Arabia, during 2003-05, leaf samples were collected from dates […]
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First confirmed report of sugarcane common rust (Puccinia melanocephala) in Ethiopia

In March 2007, researchers at the Ethiopian Sugarcane Research Services Station observed an unrecorded disease in […]
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First confirmed report of citrus black spot caused by Guignardia citricarpa on sweet oranges (Citrus sinensis) in Uganda

In November 2006, orange fruits showing black spot symptoms were brought to the rural plant clinic […]
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Cercosporidium sequoiae isolated from Cupressus lusitanica in Saint Lucia

In July 2005, a new disease was found on Cupressus lusitanica in St. Lucia, West Indies. […]
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Broad bean and sweet pepper: two new hosts associated with Candidatus Phytoplasma asteris (16SrI phytoplasma group) in Cuba

This paper presents the first report of Candidatus phytoplasma (16SrI group) on broad bean and sweet […]
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Basil little leaf: a new disease associated with a phytoplasma of the 16SrI (Aster Yellows) group in Cuba

During a survey in 2005 of weeds from the Alamar organoponic in Havana, Cuba, typical phytoplasma-symptoms […]
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A stunting syndrome of Napier grass in Ethiopia is associated with a 16SrIII group phytoplasma

Napier or elephant grass (Pennisetum purpureum ) is a perennial grass grown widely in East Africa as […]
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A natural infection of Hebe is associated with an isolate of ‘Candidatus Phytoplasma asteris’ causing a yellowing and little-leaf disease in the UK

Hebe (Veronica scutellata) is a herbaceous ornamental perennial widely grown throughout the UK and elsewhere. In […]