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Search Results: 1 - 10 of 189647 matches for " Oliveira Hamilton Gomes de "
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Root Growth, Nutrition and Yield of Maize with Applied Different Limestone Particle Size in the Cerrado Soil  [PDF]
Rafael Felippe Ratke, Hamilton Seron Pereira, Jo?o de Deus Gomes dos Santos Junior, Joaquim José Fraz?o, Juliano Magalh?es Barbosa, Bruno de Oliveira Dias
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.54060
Abstract:

The limestone with smaller particle size provides rapid correction of soil acidity. However, the limestone with large particles can promote bigger root growth, and may still have a residual effect on the soil. The aim of this study was to evaluate the residual effect of the application and incorporation of different limestone with a particle size bigger than 0.30 mm in root growth, nutrition and yield of maize in Cerrado soil. A randomized completed block utilized in this experiment, with five treatments and four replications. The grain sizes of dolomitic limestone incorporated into the Oxisol were: 0 (control, no-lime), 2.00-0.82 mm, 0.82-0.56 mm, 0.56-0.30 mm, 0.30-0.20 mm, in doses of 6.5 t·ha-1, 3.9 t·ha-1, 2.6 t·ha-1 and 1.3 t·ha-1 respectively. The limestone applied in introduction no-tillage. The maize were evaluated of root attributes, nutrition and grain yield in two years 2009 and 2010. The use of limestone particle size of 2.00-0.82 mm, and the quantity of 6.5 t·ha-1 applied to the soil and incorporated showed

Root Growth, Nutrition and Yield of Maize with Applied Finely Limestone in Surface of Cerrado Soil  [PDF]
Rafael Felippe Ratke, Hamilton Seron Pereira, Jo?o de Deus Gomes dos Santos Junior, Joaquim José Fraz?o, Juliano Magalh?es Barbosa, Bruno de Oliveira Dias
American Journal of Plant Sciences (AJPS) , 2014, DOI: 10.4236/ajps.2014.56097
Abstract:

The surface applies lime to correcting soil acidity in no-tillage and promotes root development and yield of maize. However, limestone with a particle size smaller than 0.30 mm cannot promote this effect. The aim of this study was to determine the root attributes, nutrition and productivity of maize with limestone ground in no-tillage. The experimental design was randomized blocks with five treatments and four replications. The treatments consisted of different particle sizes of limestone applying superficially to the soil under NT 0) control, without lime, 1) 0.30 mm to 0.20 mm 2) 0.20 mm to 0.10 mm, 3) 0, 10 mm to 0.05 mm 4) 0.05 mm to 0.01 mm. Attributes root, leaf nutrition and grain yield of maize were evaluated in two years 2009 and 2010. The elongation of roots in a 20-40 cm depth was greater when using limestone with particle size between 0.30 mm and 0.20 mm. The root length of maize plants correlated with the levels of Mn in maize leaves. The root development promoted by liming effect was not reflected in the productivity of maize.

Induced defense in Eucalyptus trees increases with prolonged herbivory Defensa inducida en plantas de Eucaliptus se incrementa con prolongada herbivoría
HAMILTON GOMES DE OLIVEIRA,ADRIáN JOSé MOLINA-RUGAMA,MARCOS A M. FADINI,DANIELA REZENDE
Revista Colombiana de Entomología , 2010,
Abstract: Mechanisms of defense in plants can be activated by external stimuli such as herbivory. It is well-known that such induced defense occurs after short periods of herbivory, but little is known about long-term induction. In this paper, we studied the effects of induced defenses of Eucalyptus trees on Thyrinteina arnobia (Lepidoptera: Geometridae) over four generations. The effects of induction of eucalypt plants seemed to increase gradually with prolonged periods of herbivory. To our knowledge it is the first demonstration that induced defense changes in a gradual way with long-term herbivory. This suggests that these trees, and possibly many other plants, gradually invest more in induced defense with prolonged herbivore attacks. Mecanismos de defensa en plantas pueden ser activados por estímulos externos como herbivoría. Es bien conocido que la defensa inducida ocurre después de cortos períodos de herbivoría, pero se conoce poco acerca de la inducción de larga duración. En este artículo se estudió los efectos de la defensa inducida en árboles de Eucalyptus sobre Thyrinteina arnobia (Lepidoptera: Geometridae) durante cuatro generaciones Los efectos de la inducción de plantas de Eucalipto parecieron aumentar gradualmente con períodos prolongados de herbivoría. Según nuestro conocimiento es la primera demostración que la defensa inducida cambia de modo gradual con la herbivoría a largo plazo. Eso sugiere que estos árboles, y posiblemente muchas otras plantas, gradualmente invierten más en defensa inducida con ataques prolongados de herbívoros.
Adapta o de Thyrinteina arnobia em novo hospedeiro e defesa induzida por herbívoros em eucalipto
Holtz Anderson Mathias,Oliveira Hamilton Gomes de,Pallini Angelo,Marinho Jeanne Scardini
Pesquisa Agropecuária Brasileira , 2003,
Abstract: O sistema de defesa induzido de plantas é ativado quando herbívoros se alimentam das mesmas. Alternativamente, herbívoros podem se adaptar a espécies de plantas filogeneticamente próximas ao seu hospedeiro de origem. O objetivo deste trabalho foi comparar o desenvolvimento de Thyrinteina arnobia em plantas de goiaba (hospedeiro de origem) e de eucalipto (hospedeiro novo) em campo. Adicionalmente, estudou-se a biologia deste inseto em laboratório fornecendo folhas de eucalipto previamente danificadas por lagartas de T. arnobia e folhas sem danos. A sobrevivência larval em eucalipto, 78,00%, foi superior à de goiaba, 29,33%. O ciclo larval foi de 27,90 dias em goiaba e de 30,30 dias em eucalipto. Em testes de laboratório, o ciclo larval em eucalipto limpo, 36,39 dias, foi maior do que em eucalipto danificado, 32,89 dias. A mortalidade larval em eucalipto danificado foi de 30,00% e de 10,00% em eucalipto limpo. Os resultados indicam que a goiaba n o é um bom hospedeiro para T. arnobia possivelmente por apresentar um sistema mais efetivo de defesa. Embora o eucalipto possa ser um hospedeiro mais favorável ao desenvolvimento e estabelecimento do inseto, pode também reduzir popula es do herbívoro ativando o seu sistema de defesa induzido.
Aspectos biológicos de Thyrinteina arnobia (Lep.: Geometriadae) provenientes de lagartas criadas em folhas de Eucalyptus cloeziana ou de Psidium guajava sob condi es de campo
Holtz Anderson Mathias,Zanuncio José Cola,Oliveira Hamilton Gomes de,Pallini Angelo
Revista árvore , 2003,
Abstract: Os plantios de Eucalyptus no Brasil podem sofrer danos por espécies nativas de insetos de diversas ordens, como Orthoptera, Coleoptera e Lepidoptera. Esses insetos podem alimentar-se tanto de mirtáceas brasileiras como goiabeira, gabirobeira, jabuticabeira, entre outras, como de espécies do gênero Eucalyptus. Entre os desfolhadores, destaca-se Thyrinteina arnobia (Stoll) (Lepidoptera: Geometridae) como o mais daninho dessa ordem para a eucaliptocultura brasileira. Este trabalho teve por objetivo avaliar aspectos biológicos de adultos de T. arnobia provenientes de lagartas alimentadas com plantas de eucalipto e, ou, goiabeira. Adultos deste inseto criados em folhas de eucalipto e, ou, de goiabeira apresentaram diferen as significativas para a maioria dos aspectos biológicos avaliados, exceto para a dura o dos períodos de préoviposi o, de oviposi o e raz o sexual. Assim, insetos herbívoros que vivem em hospedeiros filogeneticamente próximos ao eucalipto s o capazes de causar danos consideráveis em reflorestamentos com espécies desse grupo, o que provavelmente ocorre pelo fato de elas estarem ainda em processo de adapta o a essa praga que atacaria o eucalipto, por estar fugindo da press o exercida por barreiras físicas e químicas existentes nas mirtáceas nativas brasileiras.
Adapta??o de Thyrinteina arnobia em novo hospedeiro e defesa induzida por herbívoros em eucalipto
Holtz, Anderson Mathias;Oliveira, Hamilton Gomes de;Pallini, Angelo;Marinho, Jeanne Scardini;Zanuncio, José Cola;Oliveira, Claudinei Lima;
Pesquisa Agropecuária Brasileira , 2003, DOI: 10.1590/S0100-204X2003000400002
Abstract: the induced defense system of plants is activated when herbivorous start to injury plants. alternatively, herbivores may adapt to plants that are phylogenetically close to their original host. this work aimed at comparing the life history of thyrinteina arnobia on guava plants (origin host) with eucalyptus (the new host) in the field. the biology of the insect in the laboratory on both eucalyptus leaves previously injured by the caterpillars of t. arnobia and on clean leaves was also studied. in the field, the larvae survivorship of t. arnobia on eucalyptus was 78.00% and on guava was 29.33%. the larvae cycle was 27.90 days on guava and 30.30 days on eucalyptus. at the laboratory, tests showed that the larvae cycle on clean eucalyptus leaves lasted 36.39 days while on previously injured leaves, only 32.89 days. the larvae mortality on injured eucalyptus leaves was 30.00%, and 10.00% on clean leaves. the results indicate that guava plants are not a suitable host for t. arnobia probably due to a more effective defense system. although the eucalyptus may be a better host, it can also reduce the herbivore population by activating its herbivore induced defense system.
Atratividade de Atta sexdens rubropilosa por plantas de eucalipto atacadas previamente ou n?o por Thyrinteina arnobia
Oliveira, Hamilton Gomes de;Lacerda, Fabrícia Gon?alves;Marinho, Cidália Gabriela Santos;Della Lucia, Terezinha Maria Castro;
Pesquisa Agropecuária Brasileira , 2004, DOI: 10.1590/S0100-204X2004000300012
Abstract: the induced defense system of plants is activated after the occurrence of damage by a herbivore. the objective of this work was to evaluate whether plants of eucalyptus grandis previously attacked by larvae of thyrinteina arnobia become resistant to cutting by the leaf-cutting ant atta sexdens rubropilosa. there was no significant difference in the lapse of time spent by the workers of this ant before they started cutting plants previously attacked or not. there was significant reduction in the size of leaf fragments cut by the ants. it was concluded that plants previously attacked were less attractive to the leaf cutter due to the activation of their induced defense system.
Induced defense in Eucalyptus trees increases with prolonged herbivory
GOMES DE OLIVEIRA,HAMILTON; MOLINA-RUGAMA,ADRIáN JOSé; M. FADINI,MARCOS A; REZENDE,DANIELA; SOTO G,ALBERTO; OLIVEIRA,CLéBER; PALLINI,ANGELO;
Revista Colombiana de Entomología , 2010,
Abstract: mechanisms of defense in plants can be activated by external stimuli such as herbivory. it is well-known that such induced defense occurs after short periods of herbivory, but little is known about long-term induction. in this paper, we studied the effects of induced defenses of eucalyptus trees on thyrinteina arnobia (lepidoptera: geometridae) over four generations. the effects of induction of eucalypt plants seemed to increase gradually with prolonged periods of herbivory. to our knowledge it is the first demonstration that induced defense changes in a gradual way with long-term herbivory. this suggests that these trees, and possibly many other plants, gradually invest more in induced defense with prolonged herbivore attacks.
Aspectos biológicos de Thyrinteina arnobia (Lep.: Geometriadae) provenientes de lagartas criadas em folhas de Eucalyptus cloeziana ou de Psidium guajava sob condi??es de campo
Holtz, Anderson Mathias;Zanuncio, José Cola;Oliveira, Hamilton Gomes de;Pallini, Angelo;Marinho, Jeanne Scardini;Oliveira, Claudinei Lima;Pinon, Tobias Baruc Moreira;
Revista árvore , 2003, DOI: 10.1590/S0100-67622003000600016
Abstract: eucalyptus plantations in brazil may be damaged by native insects of many orders including orthoptera, coleoptera and lepidoptera. these insects feed on brazilian tree species of the family myrtaceae to which the genus eucalyptus belongs. the lepidoptera thyrinteina arnobia stoll (lepidoptera: geometridae) is the most harmful defoliator of eucalyptus in brazil. the objective of this work was to evaluate biological aspects of t. arnobia adults originated from caterpillars fed on guava or eucalyptus plants. adults of t. arnobia originated from caterpillars reared with eucalyptus or guava leaves presented significant differences for most biological aspects evaluated, except for duration of preoviposition and oviposition periods and sex ratio. this shows that species feeding on host plants related to eucalyptus can cause considerable damage in reforestation with species of this genus. t. arnobia insects are still undergoing an imposed adaptation process to eucalyptus plants and likely feed on these plants to escape from pressure by physical and chemical barriers of brazilian native myrtaceae.
Fat body morphology of Eriopis connexa (coleoptera, coccinelidae) in function of two alimentary sources
Sarmento, Renato de Almeida;Oliveira, Hamilton Gomes de;Holtz, Anderson Mathias;Silva, Solange Marques da;Serr?o, José Eduardo;Pallini, ?ngelo;
Brazilian Archives of Biology and Technology , 2004, DOI: 10.1590/S1516-89132004000300011
Abstract: this work investigated the influence of two alimentary sources: aphids and mites, in the morphology of the fat body of e. connexa. results showed that fat body cells of individuals fed with aphids presented areas more than three folds higher (511 ± 98,7μm2) than those of beetles fed with mites (162 ± 34,9μm2). histochemical tests showed that nutrient amount stored in fat body was higher in lady-beetles fed on aphids.
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