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Chestnut blight in Portugal: Development of experimental control measures for i...

Santos, Natércia; Bragança, Helena; Simões, S.; Machado, Helena; Moniz, F.; Basto, S.; Anastácio, D.; Mesquita, M.; Sá, L.; Ponteira, D.; Trigo, J.

During the last decade it was observed an increase of chestnut mortality rates in Portugal, mainly in Trás-os-Montes, the most important chestnut area in the country. Several studies confirmed that mortality is due, among other causes, to "chestnut blight" caused by Cryphonectria parasitica. The validation of available technical and scientific knowledge on disease control measures, mainly preventive ones, depen...

Data: 2004 | Origem: Biblioteca Digital do IPB

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A contribution to the knowledge of Bactrocera oleae (GMEL) in Tras-os-Montes re...

Bento, Albino; Torres, L.; Lopes, J.; Sismeiro, R.

Severe damage is caused by the olive fly (Bactrocera oleae (Gmel)) in the Trás-osMontes region. In order to develop a control strategy, two olive groves for oil production ("Cobrançosa" and "Verdeal") and one for table olive ("Negrinha de Freixo") were assessed ( 1993-1996). The insect phenology, yield losses and fruit infestation were evaluated. The insect's peak flight period occurred during the first half of...

Data: 1999 | Origem: Biblioteca Digital do IPB

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