Flutuação populacional do bicho-mineiro em cultivares de café arábica resistentes à ferrugem

Conceicao, C.H.C; Filho, Oliveiro Guerreiro; Gonçalves, Wallace

doi:10.1590/s0006-87052005000400012

Cited by 16 publications

(18 citation statements)

References 6 publications

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“…1) assemelham-se à descrita para a maioria das regiões produtoras de café do Brasil, cujos índices de incidência maiores que 60% constatados em cafeeiros suscetíveis são relatados para cafezais com médio-alta produção (Zambolim et al, 2005). Os resultados obtidos assemelham-se também aos de Campinas, em que a porcentagem de folhas com ferrugem no cultivar Ouro Verde Amarelo IAC 4397 foi superior a 80% no período de julho a setembro de 2003 e caiu drasticamente até zero em outubro (ConCeição, 2005).…”

Section: Resultsunclassified

Progresso temporal da ferrugem alaranjada em cultivares de cafeeiro no Oeste de São Paulo

Paulo¹,

Montes²,

Fischer³

2013

Arq. Inst. Biol.

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A ferrugem é a doença mais comum das lavouras de café. O trabalho estudou nos cultivares de Coffea arabica L. Acaiá IAC 474-19, Catuaí Amarelo IAC 47, Icatu Amarelo IAC 2944, Icatu Vermelho IAC 4045, Obatã IAC 1669 e Apoatã IAC 2258 (Coffea canephora Pierre ex Fhroen) a incidência da ferrugem. O ensaio foi realizado em Adamantina, SP, onde os cafeeiros foram plantados no espaçamento de 4,0 x 2,0 m, com duas plantas por cova e dispostos em 6 linhas com 15 a 20 covas cada. No período entre junho de 2008 a dezembro de 2009, quinzenalmente, coletou-se ao acaso 30 folhas obtidas nos terços superior, médio e inferior dos cafeeiros e calculou-se a porcentagem das folhas com sintomas característicos da ferrugem. Calculou-se a área abaixo da curva de progresso da ferrugem para cada um dos cultivares. Constatou-se a doença na Icatu Amarelo IAC 2944 e Icatu Vermelho IAC 4045, cultivares descritos como resistentes/tolerantes à ferrugem. Concluiuse que a incidência diferiu entre os cultivares e diminuiu com o aumento da temperatura, mas não com a precipitação pluvial. A incidência da doença menor que 5% nos cafeeiros ocorreu com temperaturas máximas médias mensais maiores que 30º C. PALAVRAS-CHAVE: INTRODUÇÃOA ferrugem (Hemileia vastatrix Berkeley & Broome) do cafeeiro (Coffea arabica L.) induz a desfolha por ocasião da colheita, a queda precoce das folhas, o menor vingamento da florada e dos frutos na fase de chumbinho e a seca dos ramos plagiotrópicos das plantas de café, cujo conjunto de eventos pode reduzir em mais de 50% a produção das lavouras (Zambolim et al., 1997).Os uredósporos da ferrugem são disseminados pelo vento e pela água e a germinação (Zambolim et al., 2005) e a longevidade do esporo (RibeiRo et al., 1978) são dependentes da temperatura do ar. A germinação ótima dos uredósporos acontece quando há molhamento foliar (Zambolim et al., 2005).A doença relaciona-se diretamente com o nível de produção do cafeeiro (miguel et al., 1977;Zambolim et al., 2005) e é favorecida por deficiências nutricionais, manejo inadequado e espaçamentos reduzidos entre

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Section: Resultsunclassified

Progresso temporal da ferrugem alaranjada em cultivares de cafeeiro no Oeste de São Paulo

Paulo¹,

Montes²,

Fischer³

2013

Arq. Inst. Biol.

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“…This is favorable to coffee vegetative growth due to the consecutive emission of new leaves (Blanco et al, 2003;Conceição et al, 2005). The first new leaf pairs sprouted by the plant are usually not used by L. coffeella females for oviposition and, when they are used, there is an increase in larval mortality and a decrease in egg hatching, which reduces adult fertility (Guerreiro Filho, 2006).…”

Section: Resultsmentioning

confidence: 99%

Leaf miner incidence in coffee plants under different drip irrigation regimes and planting densities

Assis

Assis²,

Scalco

et al. 2012

Pesq. agropec. bras.

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-The objective of this work was to evaluate the effect of different drip irrigation regimes and planting densities on the incidence of the leaf miner, Leucoptera coffeella, in arabica coffee plants for one year. The experiment was carried out in 2008, in a complete randomized block design, in a split-plot in time arrangement, with four replicates. The treatments consisted of four drip irrigation regimes -soil water balance, irrigations at 20 and 60 kPa soil tensions, and a nonirrigated treatment -, which were distributed at three plant densities: 2,500, 5,000, and 10,000 plants per hectare. The evaluations were made on a monthly basis between January and December 2008. The highest pest occurrence period was from August to November, a season with low-air relative humidity preceded by a drought period. Irrigated coffee plants showed an incidence of intact mines 2.2 times lower than that of nonirrigated plants. Irrigation and increasing of plant density contribute to the reduction of coffee leaf miner occurrence.

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“…The CLM is the one of the main coffee pests in Brazil (CONCEIÇÃO; GUERREIRO-FILHO;GONÇALVES, 2005;PARRA;REIS, 2013). Its larvae consume the palisade parenchyma, causing: necrosis of the leaf blade, reduction of photosynthesis, and premature leaf fall (GRAVENA, 1983b;WALLER;BIGGER;HILLOCKS, 2007).…”

Section: Methodsmentioning

confidence: 99%

“…Its larvae consume the palisade parenchyma, causing: necrosis of the leaf blade, reduction of photosynthesis, and premature leaf fall (GRAVENA, 1983b;WALLER;BIGGER;HILLOCKS, 2007). One of the main control strategies has been the application of insecticides (CONCEIÇÃO; GUERREIRO-FILHO;GONÇALVES, 2005), but this solution results in a dependency on future insecticide use to manage the population level of the pest. In addition, intensive use of insecticides has caused problems, like insect resistance (FRAGOSO et al, 2002;RIBEIRO;MAGALHÃES;GUEDES, 2003).…”

Section: Methodsmentioning

confidence: 99%

“…Coffee plants in Brazil are predominantly cultivated in monocultures, due to the ease of managing and implementing mechanized cultivation techniques (CONCEIÇÃO; GUERREIRO-FILHO;GONÇALVES, 2005), which resulted in systems with greater spacings between the plants to accommodate the traffic of machines. However, greater spacings in monocrop Rubber trees (Hevea brasiliensis Müell.…”

Section: Introductionmentioning

confidence: 99%

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Coffee Leaf Miner Incidence and Its Predation by Wasp in Coffee Intercropped With Rubber Trees

Androcioli

Hoshino

Júnior

et al. 2018

C.Sci.

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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.

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Flutuação populacional do bicho-mineiro em cultivares de café arábica resistentes à ferrugem

Cited by 16 publications

References 6 publications

Progresso temporal da ferrugem alaranjada em cultivares de cafeeiro no Oeste de São Paulo

Progresso temporal da ferrugem alaranjada em cultivares de cafeeiro no Oeste de São Paulo

Leaf miner incidence in coffee plants under different drip irrigation regimes and planting densities

Coffee Leaf Miner Incidence and Its Predation by Wasp in Coffee Intercropped With Rubber Trees

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