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3 results on '"Zinc absorption"'

1. Production and nutrition of Marandu grass fertilized with zinc

Author

Carlos Alberto Kenji Taniguchi, Adilson José Rocha Mello, Juan Waldir Mendoza Cortez, Renato de Mello Prado, and José Marcos Garrido Beraldo

Subjects
Brachiaria brizantha, Forpapge, Micronutrients, Plant nutrtion, Zinc absorption, Science, Biology (General), QH301-705.5
Abstract

The goal of this work was to evaluate the effect of zinc on the nutritional status and dry matter production of Marandu grass. The experiment was conducted in a greenhouse with containers filled with 4dm3 of an Oxisol soil. The experimental essays included six different doses of zinc (0; 15; 30; 60; 120 and 240mg.dm–3), with four repetitions. The study evaluated the number of tillers and leaves, plant height, dry mass of the shoot and root system and the concentration of zinc in the soil and leaves. The assessment was made during two different periods (cuts), with an interval of 30 days. After the second cut, the concentrations of Zn in the soil and root dry mass were determined. The application of zinc to the soil increased its concentration and absorption by the Marandu grass, which reached 140 and 181mg.kg-1 (first and second cut, respectively) in the dry mass. The zinc doses used were not toxic to the plants.

Published
2012

2. Acumulação e translocação de zinco em mudas de espécies do gênero Eucalyptus e Corymbia.

Author

da Silva, Rodrigo F., Weirich, Sidinei W., Da Ros, Clovis O., Scheid, Douglas L., Grolli, André L., and Viel, Patricia

Abstract

Copyright of Revista Brasileira de Engenharia Agricola e Ambiental - Agriambi is the property of Revista Brasileira de Engenharia Agricola e Ambiental and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Published
2015
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3. Accumulation and translocation of zinc in seedlings of species from genera Eucalyptus and Corymbia

Author

Sidinei Wolnei Weirich, Clovis Orlando Da Ros, Patricia Viel, Douglas Leandro Scheid, Andre Luís Grolli, and Rodrigo Ferreira da Silva

Subjects
Environmental Engineering, eucalyptus, contaminated soil, solo contaminado, absorção de zinco, eucalipto, zinc absorption, heavy metal, lcsh:Agriculture (General), Agronomy and Crop Science, lcsh:S1-972
Abstract

RESUMOO acúmulo e a compartimentalização de zinco são distintos entre as espécies florestais. O objetivo do trabalho foi, portanto, avaliar a capacidade de acumulação e de translocação de zinco em mudas de Eucalyptus e Corymbia em solo contaminado com zinco. O experimento foi conduzido no período de outubro de 2011 a março de 2012, em casa de vegetação, em delineamento experimental inteiramente casualizado, com arranjo fatorial (4 x 8), com doze repetições. Foram utilizadas quatro espécies: Eucalyptus. grandis W. Hill ex Maid., Eucalyptus. salignaSmith, Eucalyptus. dunnii Maiden e Corymbia citriodora (Hook.) K.D. Hill & L.A.S. Johnson, e oito doses de zinco (0, 140, 280, 420, 560, 700, 840 e 980 mg kg-1 de solo). As mudas das espécies florestais mostraram comportamento diferenciado em relação às doses de zinco aplicadas no solo com redução na massa seca da parte aérea. O E. dunnii apresenta maior redução na altura de planta, volume radicular, área foliar e massa seca radicular em relação às demais espécies. O C. citriodora apresenta maior acumulação de zinco na parte aérea e índice de translocação e baixo coeficiente de impacto do teor relativo com as doses aplicadas no solo, indicando tolerância em solos contaminados. ABSTRACTThe zinc accumulation and compartmentalization are distinct among forest species. The objective of this study was to evaluate the ability of zinc accumulation and translocation in seedlings of Eucalyptus and Corymbia in soil contaminated with zinc. The experiment was conducted during October 2011 and March 2012, in a greenhouse, in a completely randomized design, in factorial arrangement (4 x 8), with 12 replicates. Four species were used: Eucalyptus. grandis W. Hill ex Maid., Eucalyptus. saligna Smith, Eucalyptus. dunnii Maiden and Corymbia citriodora (Hook.) K.D. Hill & L.A.S. Johnson, and eight doses (0, 140, 280, 420, 560, 700, 840 and 980 mg of Zn kg-1 of soil). The seedlings of forest species showed different behavior relative to zinc doses applied in the soil, reducing the dry mass of aerial parts. The E. dunnii presents higher reduction in plant height, root volume, leaf area and root dry mass than other species. The C. citriodora has higher zinc accumulation in aerial parts as well as translocation index, and has low coefficient of impact of relative content with doses applied on the soil, indicating tolerance in contaminated soils.

Published
2015

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