Seed survival and patterns of seedling emergence studies of <i>Rottboellia cochinchinensis</i> (Lour.) W.D. Clayton in cultivated soils

Bridgemohan, Puran; Brathwaite, R. A. I.; McDavid, C.R.

doi:10.1111/j.1365-3180.1991.tb01766.x

Cited by 28 publications

(18 citation statements)

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“…Lorenzi (2000) observou que as sementes dessa espécie podem ficar dormentes no solo por até quatro anos. Além disto, o frio é um agente indutor de dormência nas suas sementes (BRIDGEMOHAN; BRATHWAITE; MAC DAVI, 1991). Assim, as sementes que se encontram em maiores profundidades no solo poderão persistir por um tempo mais prolongado, resultando em futuras infestações.…”

Section: Introductionunclassified

Profundidade de semeadura, pH, textura e manejo da cobertura do solo na emergência de plântulas de Rottboellia exaltata

et al. 2012

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ResumoO capim camalote (Rottboellia exaltata L.f) tem sido relatado como uma importante planta daninha, podendo causar prejuízos econômicos e dificuldades no manejo em diversas culturas agrícolas. Foi determinado a emergência de plântulas de R. exaltata, em diferentes profundidades de semeadura (0, 0,5, 1, 5, 10, 12, 15 e 20 cm), em solos com diferentes texturas e valores de pH. Também avaliou-se os efeitos de diferentes coberturas de solo provenientes dede Mucuna aterrima, Canavalia ensiformis e Crotalaria spectabilis, dispostas na superfície ou incorporadas, sobre a emergência e biomassa da planta daninha. No solo arenoso, a maior emergência do capim camalote ocorreu aos 5,0 cm de profundidade. No solo argiloso o padrão de emergência foi semelhante, entretanto, observou-se uma redução mais acentuada na emergência com o aumento na profundidade de semeadura. A maior taxa de germinação foi observada no solo com pH variando de 6,8 à 7,0, verificando-se menor germinação em solo não corrigido, com pH de 5,3. Os manejos de palha mais efetivos na supressão de R. exaltata foram 10 t ha -1 de C. spectabilis posicionada sobre o solo argiloso e a incorporada no solo arenoso, 5 t ha -1 de C. ensiformis incorporada ao solo arenoso. Palavras-chave: Adubo verde, supressão, biologia, capim camalote AbstractThe grass camalote (Rottboellia exaltata Lf) has been reported as an important weed, may cause economic losses and difficulties in management in several crops. It was determined the seedling emergence of R. exaltata, at different depths of sowing (0, 0.5, 1, 5, 10, 12, 15 and 20 cm) in soils with different textures and pH values. It also assessed the effects of different amounts of straw Mucuna aterrima, Canavalia ensiformis and Crotalaria spectabilis, arranged on the surface or incorporated into the soil on the emergence and weed biomass. In sandy soil, the higher emergence of R. exaltata was 5.0 cm deep. In clay soil the pattern of emergence was similar; however, there was a greater reduction in emergency with the increase in sowing depth. The highest germination rate was observed in soil with pH ranging from 6.8 to 7.0, verifying lower germination in soil not corrected, at pH 5.3.The management of straw more effective in suppressing R. exaltata were 10 t ha -1 of C. spectabilis straw positioned on clayey soil and incorporated on the sandy soil, 5 t ha -1 of C. spectabilis incorporated on the sandy soil.

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Section: Introductionunclassified

Profundidade de semeadura, pH, textura e manejo da cobertura do solo na emergência de plântulas de Rottboellia exaltata

et al. 2012

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“…Sin embargo, encontraron que sobre la superficie del suelo la persistencia (viabilidad en el tiempo) de la semilla fue muy baja en la superficie, mientras que a 10 ó 20 cm de profundidad la persistencia fue mucho mayor. En un estudio similar, Bridgemohan et al (1991) observaron que la mayor germinación se dio en los primeros 5 cm, siendo mayor a los 0 cm, además encontraron que la principal causa de mortalidad de semillas fue la pudrición, la cual se debió en gran parte a la acción de hongos.…”

Section: Resultados Y Discusiónunclassified

Efecto de la profundidad del suelo en Rottboellia cochinchinensis (Lour) Clayton en caña de azúcar (Saccharum officinarum L.).

León

Agüero

2006

Agron. Mesoam.

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Four sugarcane fields with different soil textures (clay loam, sandy loam, clay and loam) were sampled. All fields showed R. cochinchinensis populations with at least 75-150 plants/m2. The number of plants of this weed in 0.25 m2 was determined separately in the microhabitats: rows and between rows. The depth at which each plant emerged was measured. Based on depth emergence, each plant was distributed in one of the next categories: 0, >0-2.5, >2.5-5.0, >5.0-10 and >10.0-15.0 cm. In addition, under greenhouse conditions, seeds were seeded in pots at the maximum depth of each category in order to evaluate the effect of soil depth. Finally, the effect of light and darkness on seed germination were evaluated in Petri dishes under laboratory conditions. In the field evaluations most of the plants emerged from >0-2.5 cm. The second most common category was >2.5-5.0 cm. It seems that those depths provide optimum conditions for germination. There were no differences regarding soil texture or microhabitats. In the greenhouse experiment, the largest germination was observed at 0 cm due to light exposure in this treatment. This was confirmed in the laboratory where light treatment showed also the largest germination. Control strategies that keep the seeds of this species above ground will reduce the number of new seeds in the seed bank and avoid optimum field conditions for its germination. If such strategies include efforts to reduce the seed production of those plants that are able to become established, it could be possible to significantly reduce the seed bank, therefore, it would be easier to control the population of this weed.

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“…Clayton (Loureiro 1790: 51;Clayton 1981: 817-818) is considered, nowadays, an invasive weed known for causing significant agricultural losses in tropical and subtropical regions (Holm 1977), especially in maize (Bridgemohan and Brathwaite 1989), soy (Griffin 1991;Lejeune et al 1994), and sugarcane (Lencse and Griffin 1991;Millhollon 1992) cultivations. Additionally, this species is an aggressive invader of disturbed areas (Bridgemohan et al 1991;Wipff and Rector 1993) and has reportedly allelopathic and phytotoxic effects on other plants and also possesses stiff irritating trichomes on the leaf sheaths (Wipff and Rector 1993;Meksawat and Pornprom 2010). Thus, all these attributes make this species listed among the world's most problematic weeds (Millhollon and Burner 1993).…”

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First record of the invasive species Rottboellia cochinchinensis (Poaceae, Andropogoneae) in the South Region of Brazil

Funez

Ferreira

Hassemer

et al. 2016

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Rottboellia cochinchinensis is an aggressive invasive species native to Asia. This species is known worldwide for invading crops and disturbed habitats in tropical and subtropical regions. In Brazil, R. cochinchinensis had its southernmost record in São Paulo state; however, in this study we expand its distribution to Santa Catarina state, in the South Region of Brazil, based on the discovery of a population in Blumenau municipality. These new records are ca. 440 km distant from the nearest known population, in São Paulo municipality, São Paulo state, Brazil.

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Seed survival and patterns of seedling emergence studies of Rottboellia cochinchinensis (Lour.) W.D. Clayton in cultivated soils

Cited by 28 publications

References 10 publications

Profundidade de semeadura, pH, textura e manejo da cobertura do solo na emergência de plântulas de Rottboellia exaltata

Profundidade de semeadura, pH, textura e manejo da cobertura do solo na emergência de plântulas de Rottboellia exaltata

Efecto de la profundidad del suelo en Rottboellia cochinchinensis (Lour) Clayton en caña de azúcar (Saccharum officinarum L.).

First record of the invasive species Rottboellia cochinchinensis (Poaceae, Andropogoneae) in the South Region of Brazil

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