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Shorrocks, V. M.

doi:10.1023/a:1004216126069

Cited by 637 publications

(124 citation statements)

References 49 publications

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“…Higher content of boron was found in the leaves causing drying up of the edges. However, no such damage was recognizable in the case of B. chinensis (Table 5) and similar results are reported by other researchers [33] . This could be to due to the relatively short duration of four weeks experimental time.…”

Section: Discussionsupporting

confidence: 91%

Hard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on Brassica chinensis

Ulrichs¹

2009

American J. of Agricultural and Biological Sciences

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Problem statement: One focus in recent atmospheric pollution research is on fine Particle Matter (PM), especially as result of increasing traffic and anthropogenic activity in urban areas. Here, the impact on animal and human health has been in the center of many studies. Despite the fact that PM depositions can affect plants on the long term, there are only few studies about the impact on plants conducted. Approach: Therefore we studied the impact of PM on plants, using naturally occurring silica dusts (diatomaceous earth) and hard Coal Fly Ash (CFA) from burning processes. Dusts were applied onto Brassica chinensis L. using a simple duster (covering upper leaf surfaces) or electrostatically (covering leaf upper and -underside). Results: Main components of the tested CFA are SO 4 2-, K, Ca and NH 4+ . The pH value of eluates was found to be around 9.5 in CFA and 5.7 in silica. B. chinensis was insensitive towards the high pH and showed no growth reduction when grown in silica or CFA substrate. PM deposition on leaf surfaces results through shading in a reduced photosynthetic activity. The reduction is relatively higher at higher light intensities. Photosynthesis stays reduced after removal of silica PM from leaf surfaces. We assume that stomata get cloaked by small particles and that silica absorbs lipids from the epicuticle resulting in a general stress reaction. Smaller sized silica particles resulted in a higher reduction of CO 2 -absorption. Next to particle size is the photosynthesis negatively correlated with exposure time for silica PM. The chlorophyll fluorescence data indicate that dust-covered leaves exhibited significantly lower quantum yield of PS II and a reduced quantum efficiency of PS II and therefore supported the gas exchange data. Conclusion: Reduced photosynthetic performance would be expected to reduce growth and productivity of B. chinensis. In contrast to silica hard coal fly ash showed only a reduction of photosynthesis through shading but did not have any long time effects after washing them off.

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Section: Discussionsupporting

confidence: 91%

Hard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on Brassica chinensis

Ulrichs¹

2009

American J. of Agricultural and Biological Sciences

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“…Cuando la adición de B es inadecuada, se manifiestan desórdenes severos en el crecimiento de los árboles (Lehto, Ruuholaa, & Dellb, 2010). Las deficiencias de B se han presentado en plantaciones forestales de más de 80 países (Shorrocks, 1997), principalmente en sitios con suelos con pH alcalino (Bell & Dell, 2008).…”

Section: Introductionunclassified

“…When B addition is inadequate, severe disorders occur during tree growth (Lehto, Ruuholaa, & Dellb, 2010). B deficiencies have been found in forest plantations in over 80 countries (Shorrocks, 1997), mainly on sites with soils with alkaline pH (Bell & Dell, 2008).…”

Section: Introductionmentioning

confidence: 99%

FERTILIZACIÓN CON BORO EN PLANTACIONES DE Eucalyptus urophylla S. T. Blake en TABASCO

Rodríguez-Juárez¹,

Velázquez-Martínez²,

Gómez-Guerrero³

et al. 2014

Rev Cha Se Cie For y del Amb

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RESUMENE l presente trabajo se realizó en plantaciones comerciales de Eucalyptus urophylla de la empresa Forestaciones Operativas de México, S. A. de C. V. (FOMEX) en Huimanguillo, Tabasco, Méxi-co, con la finalidad de conocer el efecto de la adición de boro (B) sobre el crecimiento de dicha especie. Se dio seguimiento a 199 árboles de E. urophylla que recibieron diferentes dosis de B (0, 6 y 12 g·árbol -1 ) durante el establecimiento. El diámetro y la altura de los árboles se midieron a las edades de 1.5, 4.5 y 11 años. Se realizó un muestreo destructivo separando fuste, ramas, ramillas + hojas, para la cuantificación de biomasa y su distribución. El contenido total de nutrimentos en el follaje se evaluó y la respuesta a la aplicación de B se midió a través de un diagnóstico gráfico de vectores. Los resultados mostraron que el B favoreció el crecimiento en altura y volumen, pero este efecto no se observó en la acumulación de biomasa aérea. El análisis de vectores mostró incremento en el contenido de P, K y Ca en el follaje cuando el B se aplicó en dosis de 6 g·árbol -1 . En dosis mayores (12 g·árbol -1 ), la biomasa foliar se redujo presentando contenidos netos y concentraciones similares en las hojas más pequeñas. ABSTRACTT his study was carried out in commercial Eucalyptus urophylla plantations owned by the Forestaciones Operativas de México, S.A. de C.V. (FOMEX) company in Huimanguillo, Tabasco, Mexico, to determine the effect of boron (B) fertilization on the growth of this species. Follow-up was given to 199 E. urophylla trees that received different B doses (0, 6 and 12 g·tree -1 ) during establishment. Tree diameter and height were measured at 1.5, 4.5 and 11 years of age. Destructive sampling was performed by separating the bole, branches, twigs + leaves to quantify biomass and its distribution. In addition, total leaf nutrient content was evaluated and the response to B application was measured using vector analysis. Results showed that B fertilization favored growth in height and wood volume, but this effect was not observed in aerial biomass accumulation. Vector analysis showed increased leaf P, K and Ca content when B was applied at a dose of 6 g·tree -1 . At the higher dose (12 g·tree -1 ), foliar biomass was lower, presenting similar net nutrient contents and concentrations to those of the smallest leaves.

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“…oron (B) is an essential element for higher plants (1), and B deficiency is a widespread agricultural problem (2). The primary effect of B deficiency is reduction of cell enlargement in growing tissues (3), which has been explained mainly by the structural role of B in the cell wall.…”

mentioning

confidence: 99%

Endocytosis and degradation of BOR1, a boron transporter ofArabidopsis thaliana, regulated by boron availability

Takano

Miwa

Yuan

et al. 2005

Proc. Natl. Acad. Sci. U.S.A.

387

333

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Untitled

Cited by 637 publications

References 49 publications

Hard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on Brassica chinensis

Hard Coal Fly Ash and Silica-Effect of Fine Particulate Matter Deposits on Brassica chinensis

FERTILIZACIÓN CON BORO EN PLANTACIONES DE Eucalyptus urophylla S. T. Blake en TABASCO

Endocytosis and degradation of BOR1, a boron transporter ofArabidopsis thaliana, regulated by boron availability

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