Zinc requirements of tropical legume cover crops.

Bibliographic Details
Main Author: FAGERIA, N. K.
Publication Date: 2014
Other Authors: BALIGAR, V. C., ELSON, M. K.
Format: Article
Language: eng
Source: Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
Download full: http://www.alice.cnptia.embrapa.br/alice/handle/doc/987541
http://dx.doi.org/10.4236/ajps.2014.511187
Summary: Tropical soils are deficient in essential plant nutrients, including zinc (Zn). Using cover crops in cropping systems is an important option to improve soil fertility for sustainable crop production. However, success of cover crops in highly weathered tropical infertile acid soils is greatly influenced by adequate levels of available soil micronutrients. A greenhouse experiment was conducted to evaluate the Zn requirements of ten major tropical legume cover crops. The Zn levels used were 0, 10, 20 and 40 mg·kg-1 soil. Overall, shoot and root dry weight and maximum root length increased significantly in a quadratic fashion with increasing Zn rates in the range of 0 to 40 mg·kg-1. The Zn × cover crops interactions for shoot and root dry weight, maximum root length, Zn concentration (content per unit dry weight), Zn uptake (concentration × dry weight) and Zn use efficiency (dry weight per unit Zn uptake) were significant, indicating variation in these traits with the change in soil Zn levels. Collectively, maximum shoot dry weight was achieved with the application of 22 mg Zn·kg-1 of soil. Similarly, maximum root dry weight and root length were obtained with the addition of 22 and 17 mg Zn·kg-1 soil, respectively. Overall, Zn concentration and Zn uptake were significantly increased in a quadratic manner with the increase in the soil Zn levels in the range of 0 to 40 mg·kg-1. However, Zn use efficiency (dry weight per unit Zn uptake) decreased in a quadratic fashion with the increasing soil Zn levels from 0 to 40 mg·kg-1. Jack bean, black velvet bean, pueraria, and gray velvet bean with high Zn use efficiency appear to be suitable cover crops for low Zn soils.
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spelling Zinc requirements of tropical legume cover crops.ZincoPlanta de coberturaRaizTropical soils are deficient in essential plant nutrients, including zinc (Zn). Using cover crops in cropping systems is an important option to improve soil fertility for sustainable crop production. However, success of cover crops in highly weathered tropical infertile acid soils is greatly influenced by adequate levels of available soil micronutrients. A greenhouse experiment was conducted to evaluate the Zn requirements of ten major tropical legume cover crops. The Zn levels used were 0, 10, 20 and 40 mg·kg-1 soil. Overall, shoot and root dry weight and maximum root length increased significantly in a quadratic fashion with increasing Zn rates in the range of 0 to 40 mg·kg-1. The Zn × cover crops interactions for shoot and root dry weight, maximum root length, Zn concentration (content per unit dry weight), Zn uptake (concentration × dry weight) and Zn use efficiency (dry weight per unit Zn uptake) were significant, indicating variation in these traits with the change in soil Zn levels. Collectively, maximum shoot dry weight was achieved with the application of 22 mg Zn·kg-1 of soil. Similarly, maximum root dry weight and root length were obtained with the addition of 22 and 17 mg Zn·kg-1 soil, respectively. Overall, Zn concentration and Zn uptake were significantly increased in a quadratic manner with the increase in the soil Zn levels in the range of 0 to 40 mg·kg-1. However, Zn use efficiency (dry weight per unit Zn uptake) decreased in a quadratic fashion with the increasing soil Zn levels from 0 to 40 mg·kg-1. Jack bean, black velvet bean, pueraria, and gray velvet bean with high Zn use efficiency appear to be suitable cover crops for low Zn soils.NAND KUMAR FAGERIA, CNPAF; VIRUPAX C. BALIGAR, USDA; MARSHALL K. ELSON, USDA.FAGERIA, N. K.BALIGAR, V. C.ELSON, M. K.2014-06-04T06:13:35Z2014-06-04T06:13:35Z2014-06-0320142014-06-04T06:13:35Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleAmerican Journal of Plant Sciences, v. 5, n. 11, p. 1721-1732, May 2014.http://www.alice.cnptia.embrapa.br/alice/handle/doc/987541http://dx.doi.org/10.4236/ajps.2014.511187enginfo:eu-repo/semantics/openAccessreponame:Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)instacron:EMBRAPA2017-08-16T00:33:01Zoai:www.alice.cnptia.embrapa.br:doc/987541Repositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestopendoar:21542017-08-16T00:33:01falseRepositório InstitucionalPUBhttps://www.alice.cnptia.embrapa.br/oai/requestcg-riaa@embrapa.bropendoar:21542017-08-16T00:33:01Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)false
dc.title.none.fl_str_mv Zinc requirements of tropical legume cover crops.
title Zinc requirements of tropical legume cover crops.
spellingShingle Zinc requirements of tropical legume cover crops.
FAGERIA, N. K.
Zinco
Planta de cobertura
Raiz
title_short Zinc requirements of tropical legume cover crops.
title_full Zinc requirements of tropical legume cover crops.
title_fullStr Zinc requirements of tropical legume cover crops.
title_full_unstemmed Zinc requirements of tropical legume cover crops.
title_sort Zinc requirements of tropical legume cover crops.
author FAGERIA, N. K.
author_facet FAGERIA, N. K.
BALIGAR, V. C.
ELSON, M. K.
author_role author
author2 BALIGAR, V. C.
ELSON, M. K.
author2_role author
author
dc.contributor.none.fl_str_mv NAND KUMAR FAGERIA, CNPAF; VIRUPAX C. BALIGAR, USDA; MARSHALL K. ELSON, USDA.
dc.contributor.author.fl_str_mv FAGERIA, N. K.
BALIGAR, V. C.
ELSON, M. K.
dc.subject.por.fl_str_mv Zinco
Planta de cobertura
Raiz
topic Zinco
Planta de cobertura
Raiz
description Tropical soils are deficient in essential plant nutrients, including zinc (Zn). Using cover crops in cropping systems is an important option to improve soil fertility for sustainable crop production. However, success of cover crops in highly weathered tropical infertile acid soils is greatly influenced by adequate levels of available soil micronutrients. A greenhouse experiment was conducted to evaluate the Zn requirements of ten major tropical legume cover crops. The Zn levels used were 0, 10, 20 and 40 mg·kg-1 soil. Overall, shoot and root dry weight and maximum root length increased significantly in a quadratic fashion with increasing Zn rates in the range of 0 to 40 mg·kg-1. The Zn × cover crops interactions for shoot and root dry weight, maximum root length, Zn concentration (content per unit dry weight), Zn uptake (concentration × dry weight) and Zn use efficiency (dry weight per unit Zn uptake) were significant, indicating variation in these traits with the change in soil Zn levels. Collectively, maximum shoot dry weight was achieved with the application of 22 mg Zn·kg-1 of soil. Similarly, maximum root dry weight and root length were obtained with the addition of 22 and 17 mg Zn·kg-1 soil, respectively. Overall, Zn concentration and Zn uptake were significantly increased in a quadratic manner with the increase in the soil Zn levels in the range of 0 to 40 mg·kg-1. However, Zn use efficiency (dry weight per unit Zn uptake) decreased in a quadratic fashion with the increasing soil Zn levels from 0 to 40 mg·kg-1. Jack bean, black velvet bean, pueraria, and gray velvet bean with high Zn use efficiency appear to be suitable cover crops for low Zn soils.
publishDate 2014
dc.date.none.fl_str_mv 2014-06-04T06:13:35Z
2014-06-04T06:13:35Z
2014-06-03
2014
2014-06-04T06:13:35Z
dc.type.driver.fl_str_mv info:eu-repo/semantics/publishedVersion
info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv American Journal of Plant Sciences, v. 5, n. 11, p. 1721-1732, May 2014.
http://www.alice.cnptia.embrapa.br/alice/handle/doc/987541
http://dx.doi.org/10.4236/ajps.2014.511187
identifier_str_mv American Journal of Plant Sciences, v. 5, n. 11, p. 1721-1732, May 2014.
url http://www.alice.cnptia.embrapa.br/alice/handle/doc/987541
http://dx.doi.org/10.4236/ajps.2014.511187
dc.language.iso.fl_str_mv eng
language eng
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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instname:Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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instname_str Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
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reponame_str Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice)
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repository.name.fl_str_mv Repositório Institucional da EMBRAPA (Repository Open Access to Scientific Information from EMBRAPA - Alice) - Empresa Brasileira de Pesquisa Agropecuária (Embrapa)
repository.mail.fl_str_mv cg-riaa@embrapa.br
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