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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
18/06/1998 |
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Data da última atualização: |
18/06/1998 |
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Autoria: |
LIMA, J. E. O. de. |
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Título: |
Factors associated with excessive fruit drop of navel sweet orange Citrus sinensis (L.) Osbeck |
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Ano de publicação: |
1980 |
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Fonte/Imprenta: |
California: UFF, 1980 |
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Páginas: |
68p. |
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Série: |
Tese de Mestrado |
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Idioma: |
Inglês |
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Conteúdo: |
Significant navel fruit drop during the period between the end of Jun drop (mid-june) and legal maturity (late October) was observed during the 1978 and 1979 Florida seasons. Two distinct cycles were characterized. the first, from mid-June until mid-August was called "summer drop". The peak of summer drop occurred in early during full expansion of summer flush. A seoaration zone was found in the central axis of the fruit at the base of the secondary fruit, the navel. This zone became pronounced in about 16.5% of the fruit on the tree following the June drop and caused the secondary fruit to separate from the main fruit, turn yellow, and decay. Yellow navel fruit fell soon thereafter and represented the summer drop. It is possible that increased production of ethylene by the decaying secondary fruit stimulated the abscission of the primary one. |
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Categoria do assunto: |
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Marc: |
LEADER 01231nam a2200133 a 4500
001 1651293
005 1998-06-18
008 1980 bl uuuu m 00u1 u #d
100 1 $aLIMA, J. E. O. de
245 $aFactors associated with excessive fruit drop of navel sweet orange Citrus sinensis (L.) Osbeck
260 $aCalifornia: UFF$c1980
300 $a68p.
490 $aTese de Mestrado
520 $aSignificant navel fruit drop during the period between the end of Jun drop (mid-june) and legal maturity (late October) was observed during the 1978 and 1979 Florida seasons. Two distinct cycles were characterized. the first, from mid-June until mid-August was called "summer drop". The peak of summer drop occurred in early during full expansion of summer flush. A seoaration zone was found in the central axis of the fruit at the base of the secondary fruit, the navel. This zone became pronounced in about 16.5% of the fruit on the tree following the June drop and caused the secondary fruit to separate from the main fruit, turn yellow, and decay. Yellow navel fruit fell soon thereafter and represented the summer drop. It is possible that increased production of ethylene by the decaying secondary fruit stimulated the abscission of the primary one.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
04/01/2021 |
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Data da última atualização: |
04/01/2021 |
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Autoria: |
CASTILHOS, R. V.; RIBEIRO, L. do P.; CARVALHO, G. de. |
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Afiliação: |
RODOLFO VARGAS CASTILHOS, Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, Centro de Pesquisa para Agricultura Familiar; LEANDRO do PRADO RIBEIRO, Empresa de Pesquisa Agropecuária e Extensão Rural de Santa Catarina, Centro de Pesquisa para Agricultura Familiar; GABRIEL de CARVALHO, Universidade Comunitária da Região de Chapecó. |
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Título: |
Circadian feeding rhythm of green-belly stink bug in corn cultivation. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Pesquisa Agropecuária Brasileira, v. 56, e02123, 2021. |
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DOI: |
https://doi.org/10.1590/ S1678-3921.pab2021.v56.02123 |
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Idioma: |
Inglês |
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Notas: |
Título em português: Ritmo circadiano de alimentação do percevejo barriga-verde em cultivos de milho. |
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Conteúdo: |
Abstract - The objective of this work was to evaluate the circadian feeding rhythm of the green-belly stink bug (Dichelops melacanthus) on corn (Zea mays), and to correlate it with meteorological parameters. The experiments were conducted in corn fields in the first (summer) and second (fall) crop seasons, in the municipality of Chapecó, in the state of Santa Catarina, Brazil. Plants in the V3 and V5 stages were covered with cages and infested with adults of D. melacanthus. After 24 hours of acclimation, the number of insects feeding on the plant stem was counted every three hours (at 6:00, 9:00, 12:00, 15:00, 18:00, 21:00, and 0:00 h). At night, a red led flashlight was used to visualize the insects without interfering with their behavior. Meteorological parameters were monitored and correlated to the number of insects feeding on the plants. In the first and second crop seasons, the number of insects feeding on the corn stem differed among evaluation times, with peak in the afternoon, in the evening, and at night. Few insects were found feeding at 6:00 and 9:00 h. There was a positive correlation between air temperature and feeding in both seasons. In milder temperature regions, the preferred feeding time of D. melacanthus on corn is during the afternoon, evening, and night hours, which should be taken into account for a precise management of this insect. Resumo - O objetivo deste trabalho foi avaliar o ritmo circadiano de alimentação do percevejo barriga-verde (Dichelops melacanthus) em milho (Zea mays), e correlacionar esse comportamento com parâmetros meteorológicos. Os experimentos foram realizados em cultivos de milho de primeira (verão) e segunda safras (outono), no município de Chapecó, no estado de Santa Catarina, Brasil. Para isso, plantas nos estágios V3 e V5 foram cobertas por gaiolas e infestadas com adultos de D. melacanthus. Após 24 horas de aclimatização, o número de insetos que se alimentava no colmo das plantas foi mensurado a cada três horas (às 6:00, 9:00, 12:00, 15:00, 18:00, 21:00 e 0:00 h). Para avaliações noturnas, utilizou-se uma lanterna com led vermelho, para visualizar os insetos sem interferir em seu comportamento. Parâmetros meteorológicos foram monitorados e correlacionados com o número de insetos que se alimentava nas plantas. Nas primeira e segunda safras, o número de insetos que se alimentava nos colmos de milho diferiu entre os horários avaliados, com maior abundância à tarde e à noite. Poucos insetos foram observados alimentando-se às 6:00 e 9:00 h. Houve correlação positiva entre a temperatura do ar e a alimentação, em ambas as safras. Em regiões de clima mais ameno, o período preferido para alimentação de D.melacanthus em milho é nas horas da tarde e da noite, o que deve ser levado em consideração para um manejo eficiente desse inseto. MenosAbstract - The objective of this work was to evaluate the circadian feeding rhythm of the green-belly stink bug (Dichelops melacanthus) on corn (Zea mays), and to correlate it with meteorological parameters. The experiments were conducted in corn fields in the first (summer) and second (fall) crop seasons, in the municipality of Chapecó, in the state of Santa Catarina, Brazil. Plants in the V3 and V5 stages were covered with cages and infested with adults of D. melacanthus. After 24 hours of acclimation, the number of insects feeding on the plant stem was counted every three hours (at 6:00, 9:00, 12:00, 15:00, 18:00, 21:00, and 0:00 h). At night, a red led flashlight was used to visualize the insects without interfering with their behavior. Meteorological parameters were monitored and correlated to the number of insects feeding on the plants. In the first and second crop seasons, the number of insects feeding on the corn stem differed among evaluation times, with peak in the afternoon, in the evening, and at night. Few insects were found feeding at 6:00 and 9:00 h. There was a positive correlation between air temperature and feeding in both seasons. In milder temperature regions, the preferred feeding time of D. melacanthus on corn is during the afternoon, evening, and night hours, which should be taken into account for a precise management of this insect. Resumo - O objetivo deste trabalho foi avaliar o ritmo circadiano de alimentação do percevejo barriga-verde (Dichelops m... Mostrar Tudo |
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Palavras-Chave: |
Percevejo barriga-verde. |
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Thesagro: |
Milho; Percevejo; Safra; Zea Mays. |
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Thesaurus NAL: |
Circadian rhythm; Corn; Dichelops melacanthus; Feeding behavior; Pentatomidae. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219852/1/Circadian-feeding-rhythm-2021.pdf
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Marc: |
LEADER 03787naa a2200289 a 4500
001 2128941
005 2021-01-04
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/ S1678-3921.pab2021.v56.02123$2DOI
100 1 $aCASTILHOS, R. V.
245 $aCircadian feeding rhythm of green-belly stink bug in corn cultivation.$h[electronic resource]
260 $c2021
500 $aTítulo em português: Ritmo circadiano de alimentação do percevejo barriga-verde em cultivos de milho.
520 $aAbstract - The objective of this work was to evaluate the circadian feeding rhythm of the green-belly stink bug (Dichelops melacanthus) on corn (Zea mays), and to correlate it with meteorological parameters. The experiments were conducted in corn fields in the first (summer) and second (fall) crop seasons, in the municipality of Chapecó, in the state of Santa Catarina, Brazil. Plants in the V3 and V5 stages were covered with cages and infested with adults of D. melacanthus. After 24 hours of acclimation, the number of insects feeding on the plant stem was counted every three hours (at 6:00, 9:00, 12:00, 15:00, 18:00, 21:00, and 0:00 h). At night, a red led flashlight was used to visualize the insects without interfering with their behavior. Meteorological parameters were monitored and correlated to the number of insects feeding on the plants. In the first and second crop seasons, the number of insects feeding on the corn stem differed among evaluation times, with peak in the afternoon, in the evening, and at night. Few insects were found feeding at 6:00 and 9:00 h. There was a positive correlation between air temperature and feeding in both seasons. In milder temperature regions, the preferred feeding time of D. melacanthus on corn is during the afternoon, evening, and night hours, which should be taken into account for a precise management of this insect. Resumo - O objetivo deste trabalho foi avaliar o ritmo circadiano de alimentação do percevejo barriga-verde (Dichelops melacanthus) em milho (Zea mays), e correlacionar esse comportamento com parâmetros meteorológicos. Os experimentos foram realizados em cultivos de milho de primeira (verão) e segunda safras (outono), no município de Chapecó, no estado de Santa Catarina, Brasil. Para isso, plantas nos estágios V3 e V5 foram cobertas por gaiolas e infestadas com adultos de D. melacanthus. Após 24 horas de aclimatização, o número de insetos que se alimentava no colmo das plantas foi mensurado a cada três horas (às 6:00, 9:00, 12:00, 15:00, 18:00, 21:00 e 0:00 h). Para avaliações noturnas, utilizou-se uma lanterna com led vermelho, para visualizar os insetos sem interferir em seu comportamento. Parâmetros meteorológicos foram monitorados e correlacionados com o número de insetos que se alimentava nas plantas. Nas primeira e segunda safras, o número de insetos que se alimentava nos colmos de milho diferiu entre os horários avaliados, com maior abundância à tarde e à noite. Poucos insetos foram observados alimentando-se às 6:00 e 9:00 h. Houve correlação positiva entre a temperatura do ar e a alimentação, em ambas as safras. Em regiões de clima mais ameno, o período preferido para alimentação de D.melacanthus em milho é nas horas da tarde e da noite, o que deve ser levado em consideração para um manejo eficiente desse inseto.
650 $aCircadian rhythm
650 $aCorn
650 $aDichelops melacanthus
650 $aFeeding behavior
650 $aPentatomidae
650 $aMilho
650 $aPercevejo
650 $aSafra
650 $aZea Mays
653 $aPercevejo barriga-verde
700 1 $aRIBEIRO, L. do P.
700 1 $aCARVALHO, G. de
773 $tPesquisa Agropecuária Brasileira$gv. 56, e02123, 2021.
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