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Commercial implications of poor fruit quality due to poor phytosanitation of bananas with special reference to the Windward Islands
1987
Borton, C.A. (Windward Islands Banana Growers' Association, Castries (St. Lucia). Research and Development Division)
Poor phytosanitation affects banana quality through physical defects, harbouring of pests and diseases. The implications on marketing are briefly discussed
Show more [+] Less [-]Moko disease control: the Grenada experience
1987
Ambrose, E. (Inter-American Institute for Co-operation on Agriculture, Castries (St. Lucia))
A diseased mat eradication programme in which mats are injected with Round up, followed by cygon spray and the area sprayed with Gramoxone has been successful. 216,812 mats were destroyed between 1978 and July 1985. Findings of research funded by the EDF include early detection of infected mats by examination for corm discolouration, possibility of Ricinus comunis, begonia jumbie tomato (Solanum sp.) and Xanthosoma sp. as alternative hosts, a recommended fallow period between injection of mats and re-planting of 9-12 months, optimum weed killer and application rate (Round up at 20 mls 2 % soln) and a buffer zone of more than 8 in. in radius
Show more [+] Less [-]A biological control programme for Diaprepes abbreviatus: a citrus pest in the French West Indies
1987
Etienne-Manleon, M.M. | Mademba-Sy, F. (Centre de Cooperation International en Recherche Agronomique pour le Developpement, Fort-de-France, Martinique. Institut de Recherches sur les Fruits et Agrumes)
A summary of the research programme for control of Diaprepes abbreviatus which is primarily responsible for citrus dieback disease. Studies include: population dynamics of the pest, presence of oophagi parasites of which 3 have been discovered in Guadeloupe (Tetrastichus sp. 1 and 2, and Ceratogramma) and one in Martinique (Tetrastichus sp. 3), nematode parasites and fungal parasites. Alternative rootstocks are being tested as well as the effects of soil physical conditions
Show more [+] Less [-]The status of research on Moko disease in Guyana
1987
Muller, G.J. | Jones, F.A. (Caribbean Agricultural Research and Development Institute, Georgetown (Guyana))
The disease is endemic in Guyana and both the B and SFR strains of Pseudomonas solanacearum race 2 are present. Four resistant varieties have been introduced viz. Pilipita, Enano, Congo and Mari Congo, the first of which was best adapted to the conditions but has fruit of limited marketability
Show more [+] Less [-]Citrus sanitary conditions in Martinique: a possibility for a regional bank of germplasm
1987
Mademba-Sy, F. (Institut de Recherches sur les Fruits et Agrumes, Fort-de-France, Martinique)
Martinique is in the favourable position of being free of tristeza and its vector Toxoptera citricidus, mal secco, greening, citrus canker or blight. The Fruit Research Station with equipment for virus indexing and strict sanitary inspection at the customs makes it an ideal location for a regional germplasm bank and for multiplication of vegetative material
Show more [+] Less [-]Phytosanitation in St. Lucia
1987
St Hill, T. (St. Lucia Banana Growers' Association, Castries (St. Lucia))
The major banana pests and diseases influenced by poor field management are highlighted. Control of leaf spot (Sigatoka) benefits from a plant density from 1550 to 2100 mats/ha, weed control and detrashing and adequate surface drainage. Nematodes, borers (cosmopolites sordidus), thrips and mosaic virus are reduced by weed control, trash removal and sleeving
Show more [+] Less [-]Citrus and banana production in Trinidad and Tobago
1987
Persad, C. (Ministry of Agriculture, Lands and Food Production, Centeno (Trinidad and Tobago). Central Experiment Station)
A citrus rehabilitation programme is underway to restore abandoned estates through weed control, epiphyte and parasitic phanerogam removal, pruning, fertilization and improved drainage. Phytosanitary methods of control of Moko disease (Pseudomonas solanacearum race 2) and Yellow Sigatoka (Mycosphaerella musicola) of bananas are listed. Virus indexing of citrus cultivars has been initiated and research into tissue culture of banana plants started
Show more [+] Less [-]Current strategies for Moko control in Grenada: technical and logistical constraints
1987
Hunt, P. (Grenada Banana Cooperative Society, St. George's (Grenada). Moko Control Programme)
Moko control in Grenada by eradication of affected and adjacent (buffer zone) mats is discussed. The major constraints to the programme are poor reporting of disease occurrence, inadequate size of buffer zone, need for frequent re-visits to affected farms, uncertainty over the recommended length of the fallow period, and inadequate supplies of Moko-free planting material
Show more [+] Less [-]Improving citrus production in Surinam through control of citrus tristeza and citrus exocortis viruses
1987
Klas, J.E. (Agricultural Experiment Station, Paramaribo (Suriname))
Of the citrus diseases occurring in Surinam, fungal, bacterial, viral and those caused by nematodes, tristeza is most important. Trials to identify the best rootstocks to replace the tristeza-susceptible sour orange found Rangpur lime budded with nucellar Alidjan orange best on heavy clay soils. Sunki and King (tangors) are good rootstocks for grapefruit varieties. Research showed tristeza virus transmission by the aphid vector Toxoptera citricidus to be bi-modal (non-persistent and semi-persistent) in Surinam, with the latter more common
Show more [+] Less [-]Virus diseases of bananas: methods for early detection and characterization of bunchy top associated virus
1987
Iskra, M.L. | Bove, J.M. (Centre de Cooperation International en Recherche Agronomique pour le Developpement, Montpellier (France). Institut de Recherches sur les Fruits et Agrumes)
Describes a purification method for the Bunchy top virus based on density gradient centrifugation which allowed observation of the virus particles for the first time. Thirty micrograms of virus were obtained from 200g of infected leaves. To obtain large amounts of virus for antisera preparation the purification procedure has to be improved
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