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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
03/06/2014 |
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Data da última atualização: |
03/06/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; BALIGAR, V. C.; ELSON, M. K. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; VIRUPAX C. BALIGAR, USDA; MARSHALL K. ELSON, USDA. |
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Título: |
Zinc requirements of tropical legume cover crops. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
American Journal of Plant Sciences, v. 5, n. 11, p. 1721-1732, May 2014. |
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DOI: |
http://dx.doi.org/10.4236/ajps.2014.511187 |
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Idioma: |
Inglês |
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Conteúdo: |
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. MenosTropical 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 inc... Mostrar Tudo |
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Thesagro: |
Planta de cobertura; Raiz; Zinco. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/103022/1/nkf.pdf
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Marc: |
LEADER 02264naa a2200193 a 4500
001 1987541
005 2014-06-03
008 2014 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4236/ajps.2014.511187$2DOI
100 1 $aFAGERIA, N. K.
245 $aZinc requirements of tropical legume cover crops.$h[electronic resource]
260 $c2014
520 $aTropical 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.
650 $aPlanta de cobertura
650 $aRaiz
650 $aZinco
700 1 $aBALIGAR, V. C.
700 1 $aELSON, M. K.
773 $tAmerican Journal of Plant Sciences$gv. 5, n. 11, p. 1721-1732, May 2014.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 539 | |
| 416. |  | FAGERIA, N. K.; MOREIRA, A.; MORAES, L. A. C.; OLIVEIRA, M. F. Influência do calcário e gesso na produção e nas propriedades químicas do solo cultivado com soja. In: CONGRESSO BRASILEIRO DE SOJA, 6., 2012, Cuiabá. Soja: integração nacional e desenvolvimento sustentável: resumos. Brasília, DF: Embrapa, 2012. p. 188, res. 328.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Soja. |
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| 420. | | SANTOS, A. B. dos; FAGERIA, N. K.; STONE, L. F.; SANTOS, T. P. B. Effect of irrigation and nitrogen fertilization on the agronomic traits and yield of irrigated rice. Revista Ceres, Viçosa, MG, v. 63, n. 5, p. 724-731, set./out. 2016.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 1 |
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| Registros recuperados : 539 | |
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