Effects of Intercropping on Growth and Reproductive Capacity of Late-emerging Senecio vulgaris L., with Special Reference to Competition for Light

Baumann, D.T.

doi:10.1006/anbo.2000.1320

Cited by 31 publications

(33 citation statements)

References 22 publications

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“…The observed increase of number Bidens frondosa individuals in open site might be caused by the greatest production of fruits and seeds. Observations showing larger production of fruits and seeds in sunny places compared to shady sites are in accordance to observations carried out in populations of Sonchus arvensis (Zollinger & Kells 1991), as well as Senecio vulgaris (Baumann et al 2001). At the same time it should be add, that performed studies do not correspond with the results of research on Bidens pilosa populations (Chivinge & Shweppenhauer 1995), which showed a similar reproductive ability in individuals regardless of the presence of competitive species.…”

Section: Bidens Frondosasupporting

confidence: 83%

The influence of habitat conditions on the performance of two invasive, annuals — Impatiens glandulifera and Bidens frondosa

Kostrakiewicz-Gierałt

Zając²

2014

Biologia

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The investigations of habitat conditions on the variability of selected population features in the two invasive, annuals with different life-history traits were conducted in the years [2008][2009][2010], in the Polish part of the Carpathian Mountains in communities characterized by the gradual decrease of light availability. The individuals of Impatiens glandulifera were surveyed along roadsides, in willow thickets, as well as inside and along the edges of the riparian forest, whereas the individuals of Bidens frondosa were observed in riverside gravels characterized by a different species composition. Each year, the number and density of individuals (stems) occurring in the particular sites were examined, as well as the height and the fruit production in 30 randomly chosen stems were surveyed. Moreover, the number of seeds per fruit, the diaspore dimensions and the seedling recruitment in laboratory conditions were examined during each season. As the values of height of individuals, number of fruits per stem, number of seeds per fruit, as well as the seedling abundance in some groups were not consistent with the normal distribution and the variances were not homogeneous, the non-parametric Kruskal-Wallis test was used in statistical analyses. Much greater number and density of individuals of Impatiens glandulifera were found in riparian forest, than in willow thickets and along the roadsides. In all sites the number and density of individuals increased steadily in consecutive seasons. The great number and density of Bidens frondosa individuals observed in shady and partly shady sites during the first year of studies raised in the second year and subsequently dramatically decreased in the third season. The lowest number and density of individuals noted in the first season in unshaded site raised substantially in subsequent years. The height of stems, as well as seed and fruit production of both taxa diminished with a decrease of height of neighboring plants. The seed dimensions presented the spatial and temporal variability, whereas the number of seedlings among consecutive years and in successive sites did not differ. The considerable height of the individuals of Impatiens glandulifera, high production of large fruits and seeds in open and dry roadside areas can contribute to more effective ballistic dissemination, while substantial seedling recruitment enables the colonization of new, perhaps more advantageous sites. On the other hand, lower individual height, as well as fruit and seed production and considerable seedling emergence allow the population to last and to gradually extend the area in forest communities. The considerable abundance of the high-statured Bidens frondosa individuals, substantial production of large capitula and achenes contribute to long persistence of populations in open and sun-lit sites. The gradually decrease in the height of the stems, achene number and size observed in partly-shaded and shaded places might allow to long-distance dispersal of seeds by animals, while subst...

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Section: Bidens Frondosasupporting

confidence: 83%

The influence of habitat conditions on the performance of two invasive, annuals — Impatiens glandulifera and Bidens frondosa

Kostrakiewicz-Gierałt

Zając²

2014

Biologia

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“…The results were hypothesized to be a result of the higher rate of leaf development and the more horizontal growth habit of celery. Suppression of S. vulgaris occurred much earlier, which shortened the critical period of the leek/celery intercrop, compared to the leek monoculture, from 40 to 20 d (Baumann et al 2001).…”

Section: Response To Other Human Manipulationsmentioning

confidence: 95%

“…Weed biomass was reduced by 58% (from 45 to 20 g m -2 ) in the intercrop, and the number of seedlings that emerged as offspring of those weeds was reduced from 9500 to 450 plants m -2 . Intercropping leeks with celery decreased light availability to developing S. vulgaris seedlings, which corresponded to reduced biomass, capitula number and seed production in greenhouse pots (Baumann et al 2001). The results were hypothesized to be a result of the higher rate of leaf development and the more horizontal growth habit of celery.…”

Section: Response To Other Human Manipulationsmentioning

confidence: 99%

The biology of Canadian weeds. 123. Senecio vulgaris L.

Robinson¹,

O’Donovan²,

Sharma³

et al. 2003

Can. J. Plant Sci.

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Territories. High fecundity, rapid wind dispersal, continuous germination under a wide range of growing conditions, rapid growth rate, ability to set seed a number of times per growing season and lack of chemical control options has made this species an important weed of some horticultural crops. This species produces pyrrolizidine alkaloids that have been implicated as a cause of liver toxicity in livestock. Populations of S. vulgaris have displayed resistance to Group 5, 6 and 7 herbicides (triazines, uracils, substituted ureas and nitriles) and other photosynthetic-transport-inhibiting herbicides. Triazine resistance in S. vulgaris was the first reported case of herbicide resistance worldwide. A rust pathogen, Puccinia lagenophorae Cooke, is currently being evaluated for control of S. vulgaris in Europe. L'espèce est devenue une importante adventice dans certaines cultures horticoles à cause de sa grande fertilité, de la dispersion rapide de ses graines par le vent, de son pouvoir de germination dans maintes conditions, de sa croissance accélérée, de sa capacité à produire plusieurs fois des semences pendant la saison végétative et du manque de moyens de lutte chimiques. L'espèce synthétise les alcaloïdes de la pyrrolizidine à l'origine de problèmes d'intoxication du foie chez les bovins. Les peuplements de S. vulgaris résistent aux herbicides des groupes 5, 6 et 7 (triazines, uracils, substituts de l'urée et des nitriles) et à d'autres désherbants qui inhibent le transport actif et la photosynthèse. La résistance de S. vulgaris à la triazine est le premier cas de résistance à un herbicide à avoir été signalé dans le monde. En Europe, on évalue actuellement l'utilité de la rouille Puccinia lagenophorae Cooke dans la lutte contre cette adventice.

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“…Ambos os componentes são modificados em situação de competição no consórcio, comparandose ao monocultivo e, como consequência, altera-se a acumulação de biomassa, a produção de grãos e a morfologia das espécies consorciadas (Baumann et al, 2001).…”

Section: Print-issn 1983-6325 (On Line) E-issn 1984-7548unclassified

Análise de crescimento da Brachiaria em diferentes densidades e épocas de semeadura sob consórcio com a cultura da soja

Mata

Erasmo

Siebeneichler

et al. 2011

PAeT

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) e quatro densidades de braquiária crescidas isoladamente, sendo testemunha de referência. O cultivo da Brachiaria brizantha cv. BRS Piatã em consórcio com a cultura da soja RR M-8766 é viável, na semeadura de 20 ou 30 DAE, pelo ganho de massa seca da parte aérea inicial após a colheita da soja. Do ponto de vista fisiológico é favorável o consórcio entre soja e braquiária na densidade de 3 kg ha -1 nas duas épocas de semeadura. Palavras-chave:Integração lavoura pecuária; competição; época de semeadura; soje e brachiaria Análisis de crescimento de Brachiaria en distintas densidades y época de siembra en consorcio con la soja ResumenEl análisis de crecimiento se ha utilizado como intento para explicar las diferencias en el crecimiento, de orden genética o como resultado de cambios ambientales. Este estudio tuvo como objetivo evaluar el crecimiento de Brachiaria brizantha cv. BRS Piatã en diferentes fechas de siembra y densidad en cultivo intercalado con soja transgénica M-8766, en las condiciones del sudoeste del estado de Tocantins/Brasil. El diseño experimental fue bloques al azar en un esquema factorial (2 x 4) + 4, con cuatro repeticiones. La 'siembra de Brachiaria brizantha cv. BRS Piatã ocurrió en los 20 y 30 días después de la emergencia de la soja RR M-8766, con cuatro densidades (3, 6, 9 y 12 kg de semilla ha -1 ) y cuatro densidades de Brachiaria crecido en separado, siendo un testigo de referencia. El cultivo de Brachiaria brizantha cv. BRS Piatã intercalado con soja RR M-8766 es factible, la siembra de 20 o 30 DAE, por lo gaño con el crecimiento de la masa seca inicial después de la cosecha de soja. Desde el punto de vista fisiológico es compatible el consorcio entre la soja y brachiaria en la densidad de 3 kg ha -1 en las dos fechas de siembra.Palabras clave: integración cultivo y pecuaria; competencia entre plantas; fecha de la siembra; soja y brachiaria

show abstract

Effects of Intercropping on Growth and Reproductive Capacity of Late-emerging Senecio vulgaris L., with Special Reference to Competition for Light

Cited by 31 publications

References 22 publications

The influence of habitat conditions on the performance of two invasive, annuals — Impatiens glandulifera and Bidens frondosa

The influence of habitat conditions on the performance of two invasive, annuals — Impatiens glandulifera and Bidens frondosa

The biology of Canadian weeds. 123. Senecio vulgaris L.

Análise de crescimento da Brachiaria em diferentes densidades e épocas de semeadura sob consórcio com a cultura da soja

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