Some essential nutrient elements in forest plants as related to species, plant part, season and location

Langille, W. M.; Maclean, K.S.

doi:10.1007/bf00011125

Cited by 40 publications

(17 citation statements)

References 4 publications

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“…Plants have the ability to accumulate metals essential TO their growth and developED from the soil and water -such as, Mg, Fe, Ms, Zn, Cu, Mo and Ni (Langille, MacLean, 1976). Some plants even have the ability to accumulate metals that have no known biological function to them, as Hg, Cr and others.…”

Section: Introductionmentioning

confidence: 99%

Determination of metals in medicinal plants highly consumed in Brazil

Leal

Prado

Gomes

et al. 2013

Braz. J. Pharm. Sci.

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In this work, samples of the medicinal plants: Boldo (Peumus boldus), Castanha da Índia (Aesculus hippocastanum), Chá Verde (Camelia sinensis), Erva Cidreira (Melissa officinalis), Espinheira Santa (Maytenus ilicifolia), Guaraná (Paullinia cupana), Maracujá (Passiflora sp.), Mulungu (Erythrina velutina), Sene (Cassia angustifolia) and Valeriana (Valeriana officinalis) were evaluated BY using the Neutron Activation Analysis technique (NAA-k 0 ) in order to determine the levels of metals and other chemical contaminants. The results showed the presence of non essential elements to the human body. The diversity of chemical impurities found even at low concentration levels, considering the potential for chronic toxicity of these elements, reinforces the need to improve the implementation of good practices by growers and traders, and the hypothesis of lack of quality control in plant products. (AAN-k 0 ), a fim de se determinar os teores de metais e outros elementos químicos contaminantes. Os resultados revelaram a presença de elementos não essenciais ao organismo humano. A diversidade de impurezas químicas encontradas, mesmo em níveis de baixa concentração, considerando o potencial de toxicidade crônica desses elementos, reforça a necessidade de melhorias na aplicação de boas práticas pelos produtores e comerciantes e a hipótese de falta de controle de qualidade nos produtos vegetais.Unitermos: Análise por ativação neutrônica/análise quantitativa. Plantas medicinais. Metais/determinação em plantas medicinais. Contaminantes químicos/determinação em plantas medicinais. Produtos vegetais/ controle de qualidade.

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Section: Introductionmentioning

confidence: 99%

Determination of metals in medicinal plants highly consumed in Brazil

Leal

Prado

Gomes

et al. 2013

Braz. J. Pharm. Sci.

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show abstract

“…The P concentrations declined over the 4 years and the treatment differences became smaller as growth utilized the additional nutrient from fertilizer application. The leaf P concentrations of about 1.6 g kg À1 reached at Drayton Valley may be near the lower limit at which aspen can function and has been observed previously in the field (Langille and McLean, 1976). Leaf deficiency symptoms also developed below a P concentration of 1.6 g kg À1 in a Populus trichcarpa Â P. deltoides hybrid (van den Driessche, 2000).…”

Section: Yearmentioning

confidence: 81%

Fourth year response of aspen seedlings to lime, nitrogen and phosphorus applied at planting and 1 year after planting

Driessche

Niemi²,

Charleson³

2005

Forest Ecology and Management

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“…In general, however, our data for both species are within the ranges of concentrations reported for twigs of other hardwoods, including some Alnus and Populus spp. (Blackman et al 1979;Grigal et al 1979;Kubota et al 1970;Langille and Maclean 1976).…”

Section: Nutrient Concentrations In Terminal Twigsmentioning

confidence: 97%

Nutrient relations in coppiced black cottonwood and red alder

Radwan

DeBell

1988

Plant Soil

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Two-year-old coppice of black cottonwood and red alder, grown in pure culture and in mixture, were compared using terminal twigs and leafless shoots harvested in the winter. Terminal twigs were taken with buds intact; they were about 15 cm long. Leafless shoot samples included all above-ground components. In pure culture, dry weights of the leafless shoots per plant were similar for the two species. In mixture with alder, however, weight of the cottonwood plants was enhanced and that of alder was reduced, but neither response was statistically significant. Nutrient concentration, content per plant, and utilization varied by the plant tissues analyzed, cultural treatment (pure vs. mixed), and species. In general, nutrient concentrations were higher in the terminal twigs than in the leafless shoots of both species. Cultural treatment did not significantly affect nutrient concentration in cottonwood twigs or in the leafless shoots of either species. Concentrations of N and Fe were significantly higher and those of Mn were lower in twigs of mixed alder than in twigs of pure alder. Twigs of cottonwood were significantly higher than those of alder in concentration of P and Zn, and lower in N, Mn, and Cu. Compared with alder, cottonwood leafless shoots were significantly higher in concentration of Ca, but lower in N, S, Cu, and Mn. With few exceptions, nutrient content was highest in the shoots of the large plants of mixed cottonwood, intermediate in medium-sized pure cottonwood and pure alder, and lowest in the small mixed alder. Cottonwood was significantly more efficient than alder in use of N, S, and Cu, and less efficient in use of Ca. Some of the differences between cultural treatments and species may be associated directly or indirectly with the N 2-fixing ability of red alder. Mixed culture of the two species appears promising because of the increased growth of cottonwood. Planted separately in pure culture, the choice between cottonwood and alder may be determined, in part, by the nutritional status of the soil where plantations are established.

show abstract

Some essential nutrient elements in forest plants as related to species, plant part, season and location

Cited by 40 publications

References 4 publications

Determination of metals in medicinal plants highly consumed in Brazil

Determination of metals in medicinal plants highly consumed in Brazil

Fourth year response of aspen seedlings to lime, nitrogen and phosphorus applied at planting and 1 year after planting

Nutrient relations in coppiced black cottonwood and red alder

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