Uptake of seed-applied copper by maize and the effects on seed vigor

Seed treatment is a low-cost and efficacious method to deliver a diversity of compounds to field crops. This study evaluated the uptake of seed-applied Cu by maize and the effect on seed vigor. The treatments were composed of a control (untreated seeds) and five dosages of Cu: 0.11, 0.22, 0.44, 0.88 and 1.76 mg Cu seed–1, applied as cuprous oxide and copper oxychloride formulations. Seedling emergence and the speed of seedling emergence were determined in three periods: 1, 60 and 120 days after Cu application. Evaluations of root and shoot dry mass, Cu tissue concentration and efficiencies of Cu uptake and incorporation were conducted with two-leaf stage maize plants. Seed-applied Cu reduces the speed of maize seedling emergence, while the final emergence percentage is not affected. Shoot dry mass tends to increase with the application of Cu, while there is no interference on root dry mass within the dosages tested. Cu tissue concentration of both roots and shoots increases as higher dosages of Cu are applied to seeds, with higher accumulation in roots. Cuprous oxide promotes higher uptake of Cu by maize roots compared to copper oxychloride.

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Main Authors: Dias,Marcos Altomani Neves, Cicero,Silvio Moure, Novembre,Ana Dionísia Luz Coelho
Format: Digital revista
Language:English
Published: Instituto Agronômico de Campinas 2015
Online Access:http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300241
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spelling oai:scielo:S0006-870520150003002412015-08-31Uptake of seed-applied copper by maize and the effects on seed vigorDias,Marcos Altomani NevesCicero,Silvio MoureNovembre,Ana Dionísia Luz Coelho Zea mays L., seed treatment, seed coating seed dressing, micronutrients Seed treatment is a low-cost and efficacious method to deliver a diversity of compounds to field crops. This study evaluated the uptake of seed-applied Cu by maize and the effect on seed vigor. The treatments were composed of a control (untreated seeds) and five dosages of Cu: 0.11, 0.22, 0.44, 0.88 and 1.76 mg Cu seed–1, applied as cuprous oxide and copper oxychloride formulations. Seedling emergence and the speed of seedling emergence were determined in three periods: 1, 60 and 120 days after Cu application. Evaluations of root and shoot dry mass, Cu tissue concentration and efficiencies of Cu uptake and incorporation were conducted with two-leaf stage maize plants. Seed-applied Cu reduces the speed of maize seedling emergence, while the final emergence percentage is not affected. Shoot dry mass tends to increase with the application of Cu, while there is no interference on root dry mass within the dosages tested. Cu tissue concentration of both roots and shoots increases as higher dosages of Cu are applied to seeds, with higher accumulation in roots. Cuprous oxide promotes higher uptake of Cu by maize roots compared to copper oxychloride.info:eu-repo/semantics/openAccessInstituto Agronômico de CampinasBragantia v.74 n.3 20152015-09-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300241en10.1590/1678-4499.0044
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country Brasil
countrycode BR
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databasecode rev-scielo-br
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region America del Sur
libraryname SciELO
language English
format Digital
author Dias,Marcos Altomani Neves
Cicero,Silvio Moure
Novembre,Ana Dionísia Luz Coelho
spellingShingle Dias,Marcos Altomani Neves
Cicero,Silvio Moure
Novembre,Ana Dionísia Luz Coelho
Uptake of seed-applied copper by maize and the effects on seed vigor
author_facet Dias,Marcos Altomani Neves
Cicero,Silvio Moure
Novembre,Ana Dionísia Luz Coelho
author_sort Dias,Marcos Altomani Neves
title Uptake of seed-applied copper by maize and the effects on seed vigor
title_short Uptake of seed-applied copper by maize and the effects on seed vigor
title_full Uptake of seed-applied copper by maize and the effects on seed vigor
title_fullStr Uptake of seed-applied copper by maize and the effects on seed vigor
title_full_unstemmed Uptake of seed-applied copper by maize and the effects on seed vigor
title_sort uptake of seed-applied copper by maize and the effects on seed vigor
description Seed treatment is a low-cost and efficacious method to deliver a diversity of compounds to field crops. This study evaluated the uptake of seed-applied Cu by maize and the effect on seed vigor. The treatments were composed of a control (untreated seeds) and five dosages of Cu: 0.11, 0.22, 0.44, 0.88 and 1.76 mg Cu seed–1, applied as cuprous oxide and copper oxychloride formulations. Seedling emergence and the speed of seedling emergence were determined in three periods: 1, 60 and 120 days after Cu application. Evaluations of root and shoot dry mass, Cu tissue concentration and efficiencies of Cu uptake and incorporation were conducted with two-leaf stage maize plants. Seed-applied Cu reduces the speed of maize seedling emergence, while the final emergence percentage is not affected. Shoot dry mass tends to increase with the application of Cu, while there is no interference on root dry mass within the dosages tested. Cu tissue concentration of both roots and shoots increases as higher dosages of Cu are applied to seeds, with higher accumulation in roots. Cuprous oxide promotes higher uptake of Cu by maize roots compared to copper oxychloride.
publisher Instituto Agronômico de Campinas
publishDate 2015
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052015000300241
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