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Kölling, Christian; Pauli, Beatriz de; Häberle, Karl‐Heinz; Rehfuess, K. E.

doi:10.1023/a:1004291200514

Cited by 17 publications

(3 citation statements)

References 18 publications

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“…(Grundon 1987;Tan et al 1991;Bennett 1993). Magnesium deficiency symptoms are especially pronounced in conifers, where upper mid-crown yellowing occurs (Mehne-Jakobs 1995; Kölling et al 1997;Sun and Payn 1999;Mitchell et al 1999;Laing et al 2000;Sun et al 2001). At the same time, current-year needles usually remain green (Mehne-Jakobs 1995), which could be explained by the high mobility of Mg in the phloem (Marschner 1995).…”

Section: Applicability Of Visual Assessment To Screen Broad Beans Formentioning

confidence: 99%

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Screening broad beans (Vicia faba) for magnesium deficiency. I. Growth characteristics, visual deficiency symptoms and plant nutritional status

Hariadi¹,

Shabala²

2004

Functional Plant Biol.

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We used broad beans ( Vicia faba L.) as a case study to characterise the development of magnesium (Mg) deficiency symptoms in plants and make a comparative evaluation of the suitability of various physiological characteristics as prospective tools for early diagnosis of Mg deficiency. Growth characteristics were measured at monthly intervals from plants grown in soil solution with a wide range of Mg concentrations (from 1 to 200 ppm). The data were then correlated with plant yield responses, pigment composition and nutrient content in leaves, as well as with visual deficiency symptoms. At the age of 4 weeks, no visual symptoms of deficiency were evident even for plants grown at 1 ppm (severe Mg deficiency). Shoot growth characteristics were very similar for a wide range of treatments, although a pronounced difference in plant yield was observed at the end of the experiment. It appears that neither plant biomass nor leaf area are good indicators for use as diagnostic tools for detection of Mg deficiency in broad beans. Although pigment analysis revealed some difference between treatments, at no age was it possible to distinguish between moderately Mg-deficient (10 or 20 ppm) and sufficient (50-80 ppm) treatments. Leaf elemental analysis for Mg content remained the most sensitive and accurate indicator of Mg deficiency in broad beans. However, it is unsuitable for screening purposes as it is both costly and time-consuming. There is a need for less expensive but effective, rapid screening tools of Mg deficiency in crops at early stages of plant ontogeny.

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Section: Applicability Of Visual Assessment To Screen Broad Beans Formentioning

confidence: 99%

“…2001). The best studied are conifers, where the upper mid-crown yellowing and dieback are very pronounced under conditions of Mg deficiency (Mehne-Jakobs 1995, 1996Kölling et al . 1997;Sun and Payn 1999;Laing et al .…”

Section: Introductionmentioning

confidence: 99%

Screening broad beans (Vicia faba) for magnesium deficiency. I. Growth characteristics, visual deficiency symptoms and plant nutritional status

Hariadi¹,

Shabala²

2004

Functional Plant Biol.

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“…Questa è influenzata da fattori quali le caratteristiche del sito, l'intensità della gestione forestale, l'entità delle deposizioni atmosferiche: l'aumento della disponibilità di un elemento può indurre uno squilibrio tra esso e gli altri elementi, che possono diventare relativamente insufficienti alle esigenze della pianta. Questo è frequentemente osservato tra N e P, K e Mg, a seguito di un aumento di deposizione di N (Kolling et al 1997).…”

Section: Introduzioneunclassified

Foliar nutrients in Italian forests: results from the 1995-2009 monitoring network sites CONECOFOR

Cinti¹,

Bascietto²,

Magnani³

et al. 2013

Forest@

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Foliar nutrients in Italian forests: results from the 1995-2009 monitoring network sites CONECOFOR.In 1995, the Italian Forest Service (CFS) established the National Network for Forest Ecosystem Monitoring (CONECOFOR) with the aim to study the ecological interactions among structural and functional components of forest stands. In the 31 permanent plots of the CONECOFOR Network, surveys are carried out including vegetation, trees crown condition, chemistry of leaves and soils, tree growth, atmospheric deposition, climate, microclimate, ozone and biodiversity. These surveys are carried out by CFS in collaboration with several scientific institutions. In such context, IBAF/CNR is specifically involved in the investigation of foliage chemical content. The foliar nutritional status was analyzed in 25 sites, taking as a reference the values published by the ICP-Forests and those published in the literature. The study involved 7 forest species (Quercus cerris, Q. petraea, Q. robur, Q. ilex, Fagus sylvatica, Carpinus betulus and Picea abies) investigating the concentrations of the major macronutrients as nitrogen (N), phosphorus (P), potassium (K), magnesium (Mg), sulfur (S) and calcium (Ca) and the N/P ratio. In beech, N, S and K were found in quite high concentrations, though without showing imbalances due to concentration excesses. Ca and Mg are present in very high concentrations, highlighting the possibility of imbalances, especially in relation to the other nutrients. For these two nutrients, spruce shows substantially balanced conditions as also for N/P ratio. For deciduous Oaks nutrients arewithin the parameters of normality, with the exception of Ca. This has been observed in 4 out of the 6 studied sites, with potential indication of nutritional imbalances related to Calcium. Nutrient concentrations in Holm oak are within the average of published data, except for Ca and Mg of site TOS-1, the former being slightly low, the latter being unusually high, in relation to the peculiar soil Mg content of the above site. Considering the coefficient of variation (CV), the variability of the different elements, taking in account all species, presents the following ranking: K ≈ P > Ca> Mg ≈ N / P > S> N. On those sites presenting the longer time-series (12 out of the 25 studied sites), a more detailed analysis has been performed in order to verify the existence of trends along the monitoring period for each nutrient. Calcium, Mg and N/P show a steady decrease during the considered time span. Such trend is less marked for Ca than for Mg and N/P. Phosphorus and K show an increasing trend while no common trends have been highlighted for N and S. Overall, the study provides relevant data on status and dynamics of nutrients in Italian forest ecosystems.

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Radial Growth of Norway Spruce [Picea abies (L.) Karst.] at the Coulissenhieb Site in Relation to Environmental Conditions and Comparison with Sites in the Fichtelgebirge and Erzgebirge

Dittmar¹,

Elling²

2004

Ecological Studies

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Untitled

Cited by 17 publications

References 18 publications

Screening broad beans (Vicia faba) for magnesium deficiency. I. Growth characteristics, visual deficiency symptoms and plant nutritional status

Screening broad beans (Vicia faba) for magnesium deficiency. I. Growth characteristics, visual deficiency symptoms and plant nutritional status

Foliar nutrients in Italian forests: results from the 1995-2009 monitoring network sites CONECOFOR

Radial Growth of Norway Spruce [Picea abies (L.) Karst.] at the Coulissenhieb Site in Relation to Environmental Conditions and Comparison with Sites in the Fichtelgebirge and Erzgebirge

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