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	Provedor de dados Rev. Bras. Ciênc. Solo (2) Autor Castro,Gustavo Franco de (2) Novais,Roberto Ferreira (2) Araujo,Wagner Luiz (1) Harguindeguy,Ignácio (1) Ker,João Carlos (1) Mielki,Guilherme Furlan (1) Novais,Sarah Vieira (1) Vergutz,Leonardus (1) Vergütz,Leonardus (1) Mais... Palavra-chave Corn (Zea mays) (1) Hydric stress (1) Latossolo (1) Mehlich (1) Micronutrient (1) Mn toxicity (1) Nutrient solution (1) Soil waterlogging (1) VRDSD (1) Water table fluctuation (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2018 (1) 2016 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Physiological Responses to Hypoxia and Manganese in Eucalyptus Clones with Differential Tolerance to Vale do Rio Doce Shoot Dieback Rev. Bras. Ciênc. Solo Harguindeguy,Ignácio; Castro,Gustavo Franco de; Novais,Sarah Vieira; Vergutz,Leonardus; Araujo,Wagner Luiz; Novais,Roberto Ferreira. ABSTRACT: Vale do Rio Doce shoot dieback (VRDSD) is an anomaly whose cause seems to be associated with hypoxic conditions and their consequences (excess Mn and Fe) triggered by elevation of the water table in areas with poor drainage. Different plants have distinct survival strategies under this form of stress. The objective of this study was to understand the physiological responses involved in the differential tolerance of eucalyptus clones to VRDSD and their relationship to hypoxia and excess Mn. A hydroponic experiment was carried out using a 2 × 2 × 2 factorial arrangement, two eucalyptus clones with different levels of tolerance to VRDSD (sensitive Urograndis hybrid - 1213; and the tolerant Rio Claro hybrid - Eucalyptus grandis x unknown - 2719), two... Tipo: Info:eu-repo/semantics/article Palavras-chave: VRDSD; Water table fluctuation; Soil waterlogging; Hydric stress; Mn toxicity. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832018000100504 Iron Availability in Tropical Soils and Iron Uptake by Plants Rev. Bras. Ciênc. Solo Mielki,Guilherme Furlan; Novais,Roberto Ferreira; Ker,João Carlos; Vergütz,Leonardus; Castro,Gustavo Franco de. ABSTRACT Given the increase in crop yields and the expansion of agriculture in low fertility soils, deficiency of micronutrients, such as iron, in plants grown in tropical soils has been observed. The aim of this study was to evaluate Fe availability and Fe uptake by corn (Zea mays L.) plants in 13 different soils, at two depths. Iron was extracted by Mehlich-1, Mehlich-3, and CaCl2 (Fe-CC) and was fractionated in forms related to low (Feo) and high (Fed) crystallinity pedogenic oxyhydroxides, and organic matter (Fep) using ammonium oxalate, dithionite-citrate, and sodium pyrophosphate, respectively. In order to relate Fe availability to soil properties and plant growth, an experiment was carried out in a semi-hydroponic system in which part of the roots... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mehlich; Corn (Zea mays); Micronutrient; Nutrient solution; Latossolo. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100543 Registros recuperados: 2 Primeira ... 1 ... Última

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