Biblioteca do Café

URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/1

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2018 - 20192

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Autor: search.filters.author.Morais, HeverlyAssunto: search.filters.subject.Hevea brasiliensis

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Agora exibindo 1 - 2 de 2
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    Caracterização microclimática de sistema agroflorestal de café e seringueira
    (Embrapa Café, 2019-10) Morais, Heverly; André, Joaquim; Souza, Marcos Aurélio de; Costa, Angela B. Ferreira da
    O cafeeiro, originado de condições de sub-bosques de florestas tropicais da Etiópia, tolera e se adapta bem ao sistema agroflorestal. Do ponto de vista microclimático, o sistema agroflorestal de cafeeiros ameniza as altas e baixas temperaturas, as quais comprometem a produtividade e longevidade dos cafeeiros. O objetivo deste trabalho foi caracterizar as temperaturas em cafeeiros consorciado com seringueira (Hevea brasiliensis) e conduzidos a pleno sol no norte do Paraná. O experimento foi instalado em 1999/2000 na estação experimental do IAPAR, em Londrina, PR. Os tratamentos avaliados foram: café intercalado com fileiras duplas de seringueiras, posicionadas perpendicularmente aos cafeeiros, espaçadas a 13 metros, 16 metros, 22 metros e cafeeiros conduzidos sem sombreamento a pleno sol. Analisaram-se os dados em um dia quente datado em 01/07/2019. Analisou-se também em um período frio entre os dias 5 e 7 de julho de 2019, devido à entrada de massa polar, cujas temperaturas declinaram expressivamente com formação de geadas. O sombreamento de cafeeiros com a seringueira provocou modificações microclimáticas favoráveis, visto que atenuou as temperaturas máximas da folha e solo durante o dia e reduziu a queda noturna de temperatura da folha e solo durante as noites de ocorrência de geadas.
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    Coffee leaf miner incidence and its predation by wasp in coffee intercropped with rubber trees
    (Editora UFLA, 2018-07) Androcioli, Humberto Godoy; Hoshino, Adriano Thibes; Menezes Júnior, Ayres de Oliveira; Morais, Heverly; Bianco, Rodolfo; Caramori, Paulo Henrique
    The coffee leaf miner (CLM) Leucoptera coffeella has a wide distribution and causes significant losses in coffee plantations (Coffea spp.) in Brazil. Its occurrence can be mitigated in intercropped systems, with the rubber tree (Hevea brasiliensis ) adapting well to the consortium, while also providing extra income to the producer. We aimed to determine whether the afforestation influences the microclimate and affects the leaf miner incidence and its predation by wasp in coffee plants intercropped with rubber trees. The study was undertaken in state of Paraná, Brazil, using coffee plants intercropped with rubber trees planted in double rows (alleys) spaced at 13, 16 and 22 m between alleys, and compared to sole cropping coffee plots. From January 2008 to November 2010, the presence of CLM’s lesions including those with signs of wasp predation was monitored in coffee plants intercropped with rubber trees and in the non-consorted coffee. A higher CLM’s incidence was verified in monoculture coffee plots, while coffee plants located under and two meters away from rubber trees had the lowest incidences. CLM’s incidence in intercropping system got higher as it increased distance from the trees. The number of lesions with signs of predation by wasps was positively correlated with the number CLM’s lesions, indicating a density-dependent predator-prey relationship. The coffee plants intercropped with alley rubber trees reduce the CLM’s occurrence and can be a management’s tactic for this economically important pest.