Mineral Nutrition

Shuman, L. M.

doi:10.1201/9780824746568.ch3

Cited by 6 publications

(6 citation statements)

References 247 publications

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“…This nutrient is involved in energy transference (ATP) necessary for photosynthesis, translocation and metabolic processes (Shuman, 1994;Ferrari et al, 2014). It participates in the formation of reproductive structures, root development, fruit and seed formation (Raij, 1991;Follmann et al, 2014).…”

Section: Phosphorus (P)mentioning

confidence: 99%

Macronutrients and Micronutrients Variability in Soybean Seeds

Vargas¹,

Schuch²,

Barros³

et al. 2018

JAS

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The objective of this work was to evaluate the chemical composition of the macronutrients: nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) and sulfur (S), and micronutrients: boron (Cu), iron (Fe), manganese (Mn), molybdenum (Mo) and zinc (Zn), and the elements aluminum (Al) and sodium (Na) measured in soybean seeds from different producing regions of Brazil. This work was carried out by sampling 2543 lots of soybean seeds produced in the 2009, 2010, 2011 and 2012 growing seasons. There is high variability of macro and micronutrients concentration in soybean seeds produced in several regions of Brazil. The nitrogen, potassium, phosphorus, and calcium are the most pronounced macronutrients in soybean seeds. Among the micronutrients, iron, manganese and zinc are those with more evidence. Understanding macro and micronutrients variability is critical for improving management and fertility treats in soybean seed production fields.

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Section: Phosphorus (P)mentioning

confidence: 99%

Macronutrients and Micronutrients Variability in Soybean Seeds

Vargas¹,

Schuch²,

Barros³

et al. 2018

JAS

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“…On the other hand, Mg availability and translocation in plant tissues greatly depend on the Ca and K amounts in the organism. However, at higher pH levels in soil, the ratios of Mg/Ca and Mg/K rather than Mg alone are related to the influx, which substantiates the complementary ion effect (Shuman 1994). Also, K is important in N nutrition (Ali et al 1987), and application of Ca was found to decrease N uptake on calcareous soils (Hons and Aljoe 1985).…”

Section: Partitioning Of Mineral Elements Between Crown Layersmentioning

confidence: 84%

“…4). Many authors stress that the interaction of different mineral elements in plant tissues and their balance are of crucial importance in the growth and survival of trees under stress conditions rather than the concentration of single elements (Ingestad and Ågren 1988;Shuman 1994;Marschner 2002;Portsmuth et al 2005). So, Marschner (2002) indicated that when the K supply is abundant, its effect on the nutrient composition of trees and its possible interference with the uptake and physiological availability of Mg and Ca deserve attention.…”

Section: Partitioning Of Mineral Elements Between Crown Layersmentioning

confidence: 97%

Vertical gradients of mineral elements in Pinus sylvestris crown in alkalised soil

Mandre

2008

Environ Monit Assess

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Alkalisation of soil has been assumed to be the principal cause of changes in vertical gradients of nutrients in Pinus sylvestris crown. The long-term influence of alkaline dust pollution (pHH2O 12.3-12.6) emitted from a cement plant on the element composition of soil and needles of Scots pine in different canopy layers was studied. In the polluted area, the pH of soils was >7, and high amounts of Ca, K and Mg were measured in the upper layers of soil (0-30 cm), while the mobility and solubility of some contaminants have decreased, nutrition processes have become complicated, and imbalance of mineral composition of trees was revealed. Reduced N and increased K, Ca and Mg concentrations in needles were observed in the heavily polluted area. Vertical gradients of elements and their ratios in canopies varied depending on the alkalisation level of soil. Needles on the upper-crown shoots had higher concentrations of N, C, Ca and Mg and lower concentrations of P and K compared to the lower layer of the crown. In the unpolluted area, higher concentrations of N, P, K and Ca were found in lower-crown needles and of C and Mg in needles at the top of the canopy. The P/N ratio below 0.125 indicated P deficiency in pines. The ratios N/Ca, N/Mg and N/K had significantly decreased, while the ratios Ca/Mg, K/Mg and K/Ca had a tendency to increase in heavily polluted sample plots. Magnitude of changes of element ratios indicates on the disbalances of availability and translocation of nutrients in the crown of trees.

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“…El hecho de que N. rudis se vea favorecida por la presencia de magnesio soluble, podría atribuirse a que este elemento es parte de la molécula de la clorofila, lo que influiría en el incremento de las tasas de fotosíntesis de las plantas de los claros, y con ello ratificar lo dicho por FitzPatrick (1996) y Ortíz y Ortíz (1980) en cuanto a que este elemento es considerado esencial para la fotosíntesis, coadyuva en la translocación del almidón y en la absorción de otros nutrimentos (Ortíz y Ortíz 1980), es importante para que la planta almacene almidón en los tejidos de reserva (Shuman 1994), además de que hay algunas evidencias de que la baja disponibilidad de este elemento podría limitar el crecimiento de las plántulas en los suelos forestales (Burslem et al 1996).…”

Section: Resultsunclassified

Estructura poblacional y relaciones ambientales del árbol tropical Nectandra rudis (Lauraceae), una especie rara en el occidente de México

Cuevas-Guzmán¹,

Moya²,

Garcı́a³

et al. 2006

RBT

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Population structure and environmental relationships of the tropical tree Nectandra rudis (Lauraceae), a rare species in western Mexico. The tree N. rudis is a rare species from western Mexico of which community and population features are unknown. We studied a population in an altitudinal gradient, from 550-1 850 m above sea level in the Sierra de Manantlan, Jalisco, Mexico. We established four 60x48 m sample sites at vertical distances of 100 m along this altitudinal gradient. Within each plot, ten 100 m 2 circular sub-sampling units were randomly located. At each unit, we recorded diameter at breast height (dbh) and tree height for all woody vegetation ≥2.5 cm dbh. Basal area, tree density, frequency, species richness and importance values per species and plot. We estimated the vertical structure (total tree height) and diameter(as M=5log 10 N) for all N. rudis individuals. A direct ordination through Canonical Correspondence Analysis was done, involving amongst other species, edaphic and environmental data matrices. The record of 44 N. rudis individuals, in seven out the 56 plots sampled, represents the most septentrional record for the species and the first in Western Mexico. its density and basal area represented 4.5 % and 8.7 % respectively of the total estimated for the community. The greatest importance values were observed at 1 650 m above sea level. The population structure of N. rudis is structured into five diameter categories in an inverse "J" shaped distribution. This is a typical behavior observed to occur in the Lauraceae, which produces big seeds of short viability that germinate when there is high soil moisture content. The species tend to form dense seedling banks although only a reduced number of them are able to survive. Species richness varies from 27 to 39 at plot level; the greatest importance values for the plots on which N. rudis was found, corresponds to Urera verrucosa (Liebm.) V.W. Steinm., N. rudis, Ficus sp., Beilschmiedia manantlanensis Cuevas y Cochrane, amongst others. Canonical Correspondence Analysis suggests that environmental variables such as rooted trees, crown cover, litter depth and soluble magnesium are the more significant explanatory variables for the distribution and abundance of N. rudis.

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Mineral Nutrition

Cited by 6 publications

References 247 publications

Macronutrients and Micronutrients Variability in Soybean Seeds

Macronutrients and Micronutrients Variability in Soybean Seeds

Vertical gradients of mineral elements in Pinus sylvestris crown in alkalised soil

Estructura poblacional y relaciones ambientales del árbol tropical Nectandra rudis (Lauraceae), una especie rara en el occidente de México

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