Can soil plant analysis development values predict chlorophyll and total Fe in hybrid poplar?

Lombard, Kevin; O’Neill, M. K.; Mexal, John G.; Ulery, April; Onken, B. M.; Bettmann, Greg T.; Heyduck, Robert

doi:10.1007/s10457-009-9214-1

Cited by 19 publications

(19 citation statements)

References 29 publications

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“…3a). This is consistent with the value reported in a study of a Fe deficient hybrid poplar (P 9 euramericana) (42.5 lg g -1 : Lombard et al 2010). Others studies have reported higher concentrations in other non-nutrient-limited plantations of Populus alba (250 lg g -1 : Madejón et al 2004) and P 9 canadensis (135-486 lg g -1 : Celik et al 2010).…”

Section: Influence Of Forest Nutrition On Tree Growthsupporting

confidence: 90%

Relating visual crown conditions to nutritional status and site quality in monoclonal poplar plantations (Populus × euramericana)

Martín‐García

Merino

2011

Eur J Forest Res

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The area covered by plantations of hybrid poplar in Europe is increasing greatly because of the high profitability of these trees. However, the productivity varies widely depending on nutritional status, and it is therefore essential to identify the limiting nutrients. The aims of this study were (a) to identify the main nutrients limiting the growth and vitality of monoclonal poplar (Populus 9 euramericana) plantations and (b) to develop a means of early detection of nutrition-related problems in growth, based on visual crown conditions (crown transparency, VCT, and visual crown discoloration, VCD). The study was carried out in one of the most suitable areas for this species in Southern Europe. Thirty-two Populus 9 euramericana (clone I-214) stands displaying different levels of decline were selected for study, and tree growth, nutritional status (soil properties and foliar nutrient concentrations) and crown conditions were assessed. The stands, which were growing in soils with high contents of coarse fragments, displayed low growth rates, poor crown conditions and deficiencies in Fe, B, N, P, K, and to a lesser extent, Zn and Cu. The deficiencies increased with the age of the stand, presumably because of the higher nutrient demand in older trees. Visual crown conditions were related to growth rates and nutritional status. Predictive models were developed to relate crown conditions to the nutritional status identified by analysis of soil properties and foliar concentrations of nutrients.

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Section: Influence Of Forest Nutrition On Tree Growthsupporting

confidence: 90%

Relating visual crown conditions to nutritional status and site quality in monoclonal poplar plantations (Populus × euramericana)

Martín‐García

Merino

2011

Eur J Forest Res

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“…1) can also indicate their lower photosynthetic capacity. Highly significant correlations were found between chlorophyll and leaf N and Fe concentrations in the forest (r = 0.86; p \ 0.0001 and r = 0.78; p \ 0.0001, respectively), earlier also reported in other studies (Lombard et al 2010;Weih and Rönnberg-Wästljung 2007). Chlorophyll concentrations in leaves from the grassland were correlated with leaf Fe and Mg content (r = 0.88; p \ 0.0001 and r = 90; p \ 0.0001, respectively) but not with leaf N content (r = 0.27; p [ 0.05).…”

Section: Morphophysiological Characteristics Of Leaves and Fine Rootssupporting

confidence: 84%

“…Chlorophyll concentrations in leaves from the grassland were correlated with leaf Fe and Mg content (r = 0.88; p \ 0.0001 and r = 90; p \ 0.0001, respectively) but not with leaf N content (r = 0.27; p [ 0.05). Mg and Fe play crucial roles in the chlorophyll molecule and photosynthesis, and SPAD readings were closely related to levels of these foliar elements (Klooster et al 2012;Lombard et al 2010). The unreliable relationship between leaf chlorophyll and N concentrations on the grassland may be a consequence of the impact of N Agroforest Syst (2017) 91:307-324 315 concentration and distribution within the leaf and also other factors on SPAD readings (Klooster et al 2012;Lombard et al 2010).…”

Section: Morphophysiological Characteristics Of Leaves and Fine Rootsmentioning

confidence: 99%

Poplar growth and wood production on a grassland irrigated for decades with potato starch wastewater

2016

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Irrigation of grasslands with potato starch wastewater causes changes in soil quality parameters, often resulting in decreased crop yields and sometimes causing animal diseases. Reduced agricultural income leads to designation of such grasslands for afforestation aimed at production of bioenergy crops and improvement of soil quality. In this study, Populus alba L. and seven different poplar clones were planted in 2009 on the grassland irrigated in 1973-2008 with potato starch wastewater and in non-irrigated, experimental forest. The survival, growth and wood production potential of planted poplars after 2-3 growing seasons were analyzed. Morphophysiological parameters of leaves, nutrients in leaves and fine roots, sugars in fine roots, leaf rust resistance, frost hardiness and their effects on growth were also determined. Stem diameter and stem volume index of poplars growing on the grassland were higher than in the experimental forest. Only Populus deltoides Bartr. 9 P. maximowiczii Henry clone 'Eridano' (in short ERI) had a survival rate of 100 % and the highest values of stem diameter (77 mm) and stem volume index (0.034 m 3 ) in comparison with other poplars in both sites after 3 growing seasons. Clone ERI was also characterized by a high leaf rust resistance and frost hardiness. The results suggest that clone ERI is suitable as a bioenergy crop on grasslands irrigated with potato starch wastewater. Afforestation of the grassland improved the fertility of the soil by increasing concentrations of soil organic matter and availability of mineral nutrients (N, P, K, S and Fe).

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“…El análisis de Fe 2+ en la hoja se ha llegado a tomar como un indicador del nivel de abastecimiento de hierro en la planta (Razeto y Valdés, 2006) e investigadores como Köseoğlua y Açikgöza (1995) han llevado a cabo experimentos donde se ha encontrado una alta correlación entre la concentración de clorofila y la de Fe 2+ en la hoja de duraznero (Prunus persica L.), tanto en tejido fresco como en tejido seco. Lombard et al (2010) han llevado a cabo trabajos con apoyo del SPAD 502 para la estimación de Fe en especies forestales como el álamo(Populus ssp.) y en árboles frutales como perales(Pyrus communis L.), en los que se usó este equipo para medir el contenido de clorofila (López-Millán et al, 2001).…”

Section: Introductionunclassified

“…y en árboles frutales como perales(Pyrus communis L.), en los que se usó este equipo para medir el contenido de clorofila (López-Millán et al, 2001). Se tomaron muestras de hojas con diferentes grados de deficiencias de Fe y donde se habían tomado previamente lecturas SPAD (Lombard et al, 2010). Posteriormente, la clorofila se extrajo con acetona al 100 % y en presencia de ascorbato de sodio dado que se supone, existe correlación entre el contenido de Fe y de clorofila.…”

Section: Introductionunclassified

MODELOS DE PREDICCIÓN Y CLASIFICACIÓN DE DEFICIENCIAS DE HIERRO EN HOJAS DE FRIJOL (Phaseolus vulgaris L.) CON REDES NEURONALES BAYESIANAS REGULARIZADAS Y ÁRBOLES DE CLASIFICACIÓN

et al. 2017

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Los métodos de detección de deficiencias de hierro (Fe) en cultivos como el frijol (Phaseolus vulgaris L.) constituyen una herramienta valiosa en la toma de decisiones porque pueden utilizarse para predecir el estado nutrimental de las plantas en etapas tempranas. En esta investigación se usaron redes neuronales bayesianas regularizadas (BRNN, por sus siglas en inglés) y árboles de clasificación para llevar a cabo la predicción de dichas deficiencias basados en lecturas del SPAD 502, el cual se empleó para medir el índice de verdor de las hojas en el frijol. Se llevó a cabo un experimento con ocho tratamientos con diferentes variaciones en la concentración de Fe (0, 20, 40, 60, 80, 100, 150 y 200 %) en la solución nutritiva. Durante siete semanas se tomaron las mediciones promedio del índice de verdor de los tres foliolos de cinco repeticiones correspondientes a los ocho tratamientos y posteriormente los datos fueron utilizados para ajustar los modelos estadísticos antes mencionados. Con las BRNN, la correlación entre valores observados y predichos fue de 0.77 para el conjunto de datos en entrenamiento y de 0.54 a 0.71 para prueba. Para el caso de los árboles de clasificación, en etapa de entrenamiento el porcentaje de clasificaciones correctas fue 56.25 % y disminuyó casi 30 % cuando se llevó a cabo el procedimiento de validación. Por lo que para la presente investigación, el uso de BRNN constituye una herramienta valiosa para la predicción de deficiencias tempranas de Fe en el cultivo de frijol.

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Can soil plant analysis development values predict chlorophyll and total Fe in hybrid poplar?

Cited by 19 publications

References 29 publications

Relating visual crown conditions to nutritional status and site quality in monoclonal poplar plantations (Populus × euramericana)

Relating visual crown conditions to nutritional status and site quality in monoclonal poplar plantations (Populus × euramericana)

Poplar growth and wood production on a grassland irrigated for decades with potato starch wastewater

MODELOS DE PREDICCIÓN Y CLASIFICACIÓN DE DEFICIENCIAS DE HIERRO EN HOJAS DE FRIJOL (Phaseolus vulgaris L.) CON REDES NEURONALES BAYESIANAS REGULARIZADAS Y ÁRBOLES DE CLASIFICACIÓN

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