Influência de diferentes períodos de controle e convivência de plantas daninhas em eucalipto

Londero, Eduardo Kneipp; Schumacher, Mauro Valdir; Ramos, Luiz; Ramiro, Glodoaldo A; Szymczak, Denise Andréia

doi:10.1590/s0104-77602012000300011

Cited by 11 publications

(9 citation statements)

References 4 publications

(5 reference statements)

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“…Silva et al (2004) com a convivência de Urochloa brizantha com C. citriodora ou E. grandis. Londero et al (2012) com diferentes períodos de convivência de plantas daninhas em eucalipto.…”

Section: Resultsunclassified

Haloxifope-P-Metílico Para Controle De Brachiaria Decumbens Na Cultura Do Eucalipto

Assis

Cesarin

Nepomuceno

et al. 2015

CERNE

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RESUMO:A cultura do eucalipto expandiu-se para a região Centro-Oeste do País, áreas onde antes havia pastagens, sobretudo de Brachiaria decumbens (capim-braquiária), passando essa a se constituir a principal planta daninha. O presente trabalho objetivou avaliar a eficácia haloxifope-p-metílico no controle de B. decumbens infestando mudas de eucalipto (Eucalyptus urograndis) e sua seletividade para a cultura. Para tanto, montouse um experimento com três situações: eucalipto plantado isoladamente, eucalipto em convivência com a espécie B. decumbens e B. decumbens plantada isoladamente. Aos 67 dias após o plantio das mudas foi feita a aplicação do haloxifope-p-metílico nas doses de 0; 48 e 96 g . i . a . ha ), proporcionou um bom controle da planta daninha. O herbicida, nas doses testadas, foi seletivo à cultura do eucalipto e a convivência entre eucalipto e B. decumbens resultou em interferência negativa para ambas as espécies. HALOXYFOP-P-METHYL IN THE CONTROL OF BRACHIARIA DECUMBENS IN EUCALYPTUSABSTRACT: : Eucalyptus plantations in Brazil expanded to the Midwest region of the country in areas previously occupied by pastures, especially of Brachiaria decumbens (signal grass), making it the main weed in eucalyptus plantation. This work aimed to evaluate the efficiency of haloxyfop-P-methyl to control B. decumbens infesting eucalyptus seedlings. This experiment was set up in three situations: monoculture eucalyptus, eucalyptus in coexistence with B. decumbens and the weed cultivated alone. Haloxyfop-p-methyl was applied 67 days after plating the seedlings at doses of 0; 48 and 96 g . i . a . ha ) of haloxyfop-p-methyl provided good weed control. The herbicide, at the tested doses, was selective for eucalyptus and the relationship between eucalyptus and B. decumbens resulted in negative interference for both species.

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Section: Resultsunclassified

Haloxifope-P-Metílico Para Controle De Brachiaria Decumbens Na Cultura Do Eucalipto

Assis

Cesarin

Nepomuceno

et al. 2015

CERNE

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“…Among the direct interferences, the most common is intra-and interspecific competition, which tends to occur from the moment that two or more individuals develop in the same space and are dependent on the same limited resources for their survival, such as water, nutrients, light, and space in the case of plants (Odum, 2004;Pereira et al, 2014). This phenomenon is one of the challenges for the success of commercial reforestation since weed occurrence damages planting productivity and leads to complications in operational activities (Pitelli, 1987;Londero, Schumacher, Ramos, Ramiro, & Szymczak, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Some studies have already showed that during the first year of eucalyptus development there is an ideal period for weed control aiming at the best growth of the forest stand, which varies according to the clone and region of study (Toledo et al, 2000;Londero et al, 2012;Tarouco et al, 2009). Therefore, taking into account the lack of information on the management and relationship between weed and eucalyptus in the Amazon, this study aimed to evaluate the growth of the hybrid clone Eucalyptus grandis × Eucalyptus urophylla submitted to competition with weeds and determine the period prior to economic loss (PPEL) to the conditions of the Amazon region.…”

Section: Introductionmentioning

confidence: 99%

Maintenance of the Economic Performance of Eucalyptus in Competition With Weeds

Pereira¹,

Rocha²,

Noronha³

et al. 2019

JAS

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The aim of this study was to evaluate the growth of the hybrid clone Eucalyptus grandis × Eucalyptus urophylla submitted to competition with weeds and determine the period prior to economic loss (PPEL). The experiment was carried out in Ulianópolis, Pará State, Brazil, and consisted of the treatments continuous control and no control of weeds. Weed management was carried out by integrating both mechanical and chemical control. Stem base diameter, height, canopy diameter of eucalyptus plants were measured on the 16th month after planting. Wood volume was estimated by means of a volumetric equation. The treatments continuous control and no control of weeds were compared using the Hotelling’s T2 test and the parameters for PPEL calculation were defined from volume estimation. The treatment continuous control promoted significant gains in eucalyptus growth. PPEL tended to be reduced by 3.8287 and 0.2393 units with the increase of a unit in the price of wood and the increase of planting yield, respectively. For different eucalyptus wood prices, the calculated PPEL ranged from 40 to 161 days of coexistence with weeds.

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“…No entanto, para atender à demanda solicitada pelas indústrias do setor florestal (energia, papel e celulose, moveleira, naval, entres outras), é fundamental que essas áreas de reflorestamento apresentem alta produção de madeira. Porém, há alguns fatores limitantes ao crescimento e desenvolvimento das árvores, sendo um deles a ocorrência de plantas daninhas no ecossistema florestal (Londero et al, 2012).…”

Section: Introductionunclassified

ESTIMATIVA VOLUMÉTRICA DE UM POVOAMENTO EXPERIMENTAL DE Aniba rosaeodora Ducke. NO MUNICÍPIO DE PRAINHA – OESTE DO PARÁ – AMAZÔNIA

Rocha¹,

Rode²,

Jesus³

et al. 2019

Empreendedorismo E Inovação Na Engenharia Florestal

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Todo o conteúdo deste livro está licenciado sob uma Licença de Atribuição Creative Commons. Atribuição 4.0 Internacional (CC BY 4.0). O conteúdo dos artigos e seus dados em sua forma, correção e confiabilidade são de responsabilidade exclusiva dos autores. Permitido o download da obra e o compartilhamento desde que sejam atribuídos créditos aos autores, mas sem a possibilidade de alterá-la de nenhuma forma ou utilizá-la para fins comerciais.

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Influência de diferentes períodos de controle e convivência de plantas daninhas em eucalipto

Cited by 11 publications

References 4 publications

Haloxifope-P-Metílico Para Controle De Brachiaria Decumbens Na Cultura Do Eucalipto

Haloxifope-P-Metílico Para Controle De Brachiaria Decumbens Na Cultura Do Eucalipto

Maintenance of the Economic Performance of Eucalyptus in Competition With Weeds

ESTIMATIVA VOLUMÉTRICA DE UM POVOAMENTO EXPERIMENTAL DE Aniba rosaeodora Ducke. NO MUNICÍPIO DE PRAINHA – OESTE DO PARÁ – AMAZÔNIA

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