Leucaena leucocephala (Lam.) de Wit (Fabaceae): invasora ou ruderal?

Costa, José Nicola Martorano Neves da; Durigan, Giselda

doi:10.1590/s0100-67622010000500008

Cited by 38 publications

(34 citation statements)

References 23 publications

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“…Even though Leucaena is a species applied in reforestation and/or feeding cattle under semiarid regions, they can be troublesome for farmers during maize development. Costa and Durigan (2010) conducted a study evaluating if L. leucocephala acts as a weed disturbing environmental equilibrium or not. They concluded that L. leucocephala was a weed.…”

Section: Discussionmentioning

confidence: 99%

Phytosociology and Behavior of Weeds in Maize as Influenced by Spatial Arrangements

Mendes¹,

Filho²,

Pereira³

et al. 2018

JAS

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Using the right spatial arrangement is a sustainable way to prevent or at least delay the emergence of weeds in the crop production. This study evaluated the influence of row spacing and plant density of maize on weed control based on the phytosociological survey. It was conducted on an Oxisol textured medium in a 400 m 2 area under semiarid conditions. The hybrid maize 30F53YH was managed under a no-till cropping system with three types of row spacing ( , and 8.0 plants m -2 ). The experimental design was randomized complete blocks with four replications in a factorial arrangement 3 × 3. The phytosociological survey of the weeds was randomly performed four times in each subplot, using the inventory square (0.5 m × 0.5 m). The collected data were analyzed using the R statistical program. Among the specimen's families identified on the field, three of them need to be highlighted due to its high values of density, frequency, and dominance. These families were Fabaceae, Poaceae, and Amaranthaceae. Also, it was identified that the Leucaena leucocephala species may be classified as a weed, as it acted as an invasive species on maize. The weed control was greatly influenced by the interaction of both parameters rather than only row spacing or the plant density factor. The results showed that the reduced spacing and high crop population decreased the presence of weeds in the maize crop.

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Section: Discussionmentioning

confidence: 99%

Phytosociology and Behavior of Weeds in Maize as Influenced by Spatial Arrangements

Mendes¹,

Filho²,

Pereira³

et al. 2018

JAS

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“…em todas as áreas, independentemente do modelo de PRAD adotado, pode ser explicada pelo comportamento ecológico de rápido crescimento e dispersão da espécie e pela localização, nas áreas adjacentes, de plantios homogêneos dessa espécie. Espécies exóticas podem comprometer a restauração de áreas degradadas, pois algumas são de difícil controle e interferem no processo sucessional das espécies nativas (Costa & Durigan, 2010). De acordo com Assis et al (2013), embora existam instrumentos legais para a regularização do uso de espécies exóticas, ainda é frequente o plantio desse tipo de espécie em áreas de PRAD.…”

Section: Resultsunclassified

Regeneração Natural de Espécies Vegetais em Jazidas Revegetadas

et al. 2016

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RESUMOA mineração provoca degradação intensa no ambiente. Em consequência dos impactos dessa atividade, a legislação determina a elaboração e execução de Planos de Recuperação de Áreas Degradadas (PRADs) como medida de reabilitação do ambiente degradado. O objetivo deste estudo foi realizar a avaliação de áreas de mineração reabilitadas com plantio de Eucalyptus sp. ou espécies arbóreas nativas, utilizando como parâmetros a composição, a diversidade florística implantada e as condições da regeneração natural. Foram identificadas 41 espécies distribuídas em 39 gêneros e 22 famílias. Observaram-se 16 espécies de novos regenerantes no conjunto das áreas. O levantamento florístico revelou menor diversidade na área com Eucalyptus sp. do que nas áreas revegetadas com espécies nativas. Assim, o uso de espécies nativas na recuperação de áreas degradadas se mostrou mais adequado à diversidade florística.Palavras-chave: degradação, mineração, recuperação. Natural Regeneration of Plant Species in Revegetated Mining Areas ABSTRACTMining activities causes severe environmental degradation. In light of the activity impacts, the legislation determine the development and implementation of Recovery of Degraded Areas Plans (PRDA) as a measure to restore the degraded environment. This study aimed to evaluate the mining areas rehabilitated by planting Eucalyptus sp. or native species, using parameters such as composition, implanted floristic diversity and conditions of natural regeneration. We identified 41 species in 39 genera and 22 families, and noted 16 new regenerating species in the whole area. The floristic survey revealed lower diversity in the area with Eucalyptus sp. than in the area revegetated with native species Thus, the use of native species in degraded land recovery was more appropriate due to the floristic diversity.

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“…The presence of this species is widely discussed in the literature. The species is frequently considered aggressive, inhibitor, invasive, or ruderal Durigan, 2010;Fonseca;Jacob, 2011;Walker, 2011;Kebede, 2016). According to Lowe et al (2000), L. leucocephala was included in the International Union for Conservation of Nature -IUCN list of the 100 world's worst invasive alien species.…”

Section: Discussionmentioning

confidence: 99%

The Dynamics of the Substrate Recovery of Waste Dumps in Calcary Mining Under Natural Regeneration

Lima

Ribeiro

Dias

et al. 2018

CERNE

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RIBEIRO, A. I.; DIAS, H. C. T.; BESSI, D.; TONELLO, K. C.; The dynamics of the substrate recovery of waste dumps in calcary mining under natural regeneration. CERNE, v. 24, n. 1, p. 18-26, 2018. HIGHLIGHTSEvaluate the dynamics of the physical and chemical recovery of the substrates of waste dumps of different ages undergoing natural regeneration, in a calcary mining.Characterization of the vegetation, vegetation and physical and chemical cover of the substrates of the abandoned waste dumps since 1994 and 2013 and the soil of a native forest fragment adjacent to the mining was carried out.The soil cover rate with herbaceous, grassy, regenerating and litter of the sterile stacks are similar to the native forest fragment.The same was observed for the physical characterization of soil resistance to penetration, soil moisture content and relative light index. ABSTRACTThis study aimed to evaluate the dynamics of the physical and chemical recovery of the substrates of waste dumps of different ages undergoing natural regeneration, in a calcary mining in Salto de Pirapora -SP, Brazil. Characterization of the vegetation, vegetation and physical and chemical cover of the substrates of the abandoned waste dumps since 1994 and 2013 and the soil of a native forest fragment adjacent to the mining was carried out. Twelve plots of 10x10m were allocated in each environment. It was verified that the soil cover rate with herbaceous, grassy, regenerating and litter of the sterile stacks are similar to the native forest fragment. The same was observed for the physical characterization of soil resistance to penetration, soil moisture content and relative light index. For the chemical characteristics, in all areas sampled there is aluminum deficiency which, consequently, presented low potential acidity and alkaline pH. The CEC of the substrates of the waste dumps presented values similar to the CEC of the native forest fragment, with abundance in some essential nutrients, indicating the possibility of vegetation development in the sterile stacks and the contribution of the natural regeneration to the substrates. Thus, the plant-soil relationship via natural regeneration in the sterile piles contributed to the improvement of the edaphic quality of the substrates over time, being a potential form of recovery in calcary mining. Thereby, the Fabaceae predominated on the waste dumps, especially Leucaena leucocephala, which, despite being an exotic species, is relevant for the current recovery stage of the substrates.

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Leucaena leucocephala (Lam.) de Wit (Fabaceae): invasora ou ruderal?

Cited by 38 publications

References 23 publications

Phytosociology and Behavior of Weeds in Maize as Influenced by Spatial Arrangements

Phytosociology and Behavior of Weeds in Maize as Influenced by Spatial Arrangements

Regeneração Natural de Espécies Vegetais em Jazidas Revegetadas

The Dynamics of the Substrate Recovery of Waste Dumps in Calcary Mining Under Natural Regeneration

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