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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
04/04/2014 |
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Data da última atualização: |
26/05/2014 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FAGERIA, N. K.; BALIGAR, V. C. |
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Afiliação: |
NAND KUMAR FAGERIA, CNPAF; VIRUPAX CHANABASAPPA BALIGAR, USDA. |
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Título: |
Evaluation of tropical legume cover crops for copper use efficiency. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
American Journal of Plant Sciences, v. 5, n. 9, p. 1236-1247, Apr. 2014. |
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DOI: |
http://dx.doi.org/10.4236/ajps.2014.59136 |
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Idioma: |
Inglês |
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Conteúdo: |
Cover crops are important components of cropping systems due to their role in improving soil quality. Lack of adequate levels of soil micronutrients prevents the success of cover crops in highly weathered tropical soils. A greenhouse experiment was conducted with the objective to evaluate copper use efficiency of nine tropical legume cover crops. The copper levels used were 0, 5, 10 and 20 mg Cu kg−1 of soil. Shoot dry weight, maximum root length and root dry weight significantly increased in a quadratic fashion with increasing soil Cu levels in the range of 0 to 20 mg kg−1 soil. Cu x cover crops interactions for shoot dry weight, root dry weight, maximum root length and contribution of root to the total dry weight were significant, indicating different responses of cover crops with the variation in soil Cu levels. Overall, maximum shoot dry weight was obtained with the application of 13 mg Cu kg−1. Similarly, maximum root dry weight and maximum root length were obtained with the application of 12 and 14 mg Cu kg−1 of soil. Root dry weight and maximum root length were significantly and positively related to shoot dry weight, indicating that a vigorous root system is important for improving productivity of cover crops grown on Brazilian Oxisols, especially where deficiency of micronutrients such as Cu exists. The Cu concentration in the plant tissue decreased in a quadratic fashion whereas, Cu uptake increased with increasing Cu application rate from 0 to 20 mg kg−1 soil. There was a significant variation observed in Cu use efficiency among cover crop species. Increasing applied Cu levels significantly increased soil pH and Mehlich 1 extractable soil Cu, Zn, Mn and Fe concentrations in the soil solution. MenosCover crops are important components of cropping systems due to their role in improving soil quality. Lack of adequate levels of soil micronutrients prevents the success of cover crops in highly weathered tropical soils. A greenhouse experiment was conducted with the objective to evaluate copper use efficiency of nine tropical legume cover crops. The copper levels used were 0, 5, 10 and 20 mg Cu kg−1 of soil. Shoot dry weight, maximum root length and root dry weight significantly increased in a quadratic fashion with increasing soil Cu levels in the range of 0 to 20 mg kg−1 soil. Cu x cover crops interactions for shoot dry weight, root dry weight, maximum root length and contribution of root to the total dry weight were significant, indicating different responses of cover crops with the variation in soil Cu levels. Overall, maximum shoot dry weight was obtained with the application of 13 mg Cu kg−1. Similarly, maximum root dry weight and maximum root length were obtained with the application of 12 and 14 mg Cu kg−1 of soil. Root dry weight and maximum root length were significantly and positively related to shoot dry weight, indicating that a vigorous root system is important for improving productivity of cover crops grown on Brazilian Oxisols, especially where deficiency of micronutrients such as Cu exists. The Cu concentration in the plant tissue decreased in a quadratic fashion whereas, Cu uptake increased with increasing Cu application rate from 0... Mostrar Tudo |
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Thesagro: |
Cobertura vegetal; Cobre; Fertilizante fosfatado; Microelemento; Raíz. |
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Thesaurus Nal: |
Cover crops; Plant micronutrients; Root growth. |
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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/100601/1/nkfbaligar.pdf
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Marc: |
LEADER 02484naa a2200241 a 4500
001 1983950
005 2014-05-26
008 2014 bl uuuu u00u1 u #d
024 7 $ahttp://dx.doi.org/10.4236/ajps.2014.59136$2DOI
100 1 $aFAGERIA, N. K.
245 $aEvaluation of tropical legume cover crops for copper use efficiency.$h[electronic resource]
260 $c2014
520 $aCover crops are important components of cropping systems due to their role in improving soil quality. Lack of adequate levels of soil micronutrients prevents the success of cover crops in highly weathered tropical soils. A greenhouse experiment was conducted with the objective to evaluate copper use efficiency of nine tropical legume cover crops. The copper levels used were 0, 5, 10 and 20 mg Cu kg−1 of soil. Shoot dry weight, maximum root length and root dry weight significantly increased in a quadratic fashion with increasing soil Cu levels in the range of 0 to 20 mg kg−1 soil. Cu x cover crops interactions for shoot dry weight, root dry weight, maximum root length and contribution of root to the total dry weight were significant, indicating different responses of cover crops with the variation in soil Cu levels. Overall, maximum shoot dry weight was obtained with the application of 13 mg Cu kg−1. Similarly, maximum root dry weight and maximum root length were obtained with the application of 12 and 14 mg Cu kg−1 of soil. Root dry weight and maximum root length were significantly and positively related to shoot dry weight, indicating that a vigorous root system is important for improving productivity of cover crops grown on Brazilian Oxisols, especially where deficiency of micronutrients such as Cu exists. The Cu concentration in the plant tissue decreased in a quadratic fashion whereas, Cu uptake increased with increasing Cu application rate from 0 to 20 mg kg−1 soil. There was a significant variation observed in Cu use efficiency among cover crop species. Increasing applied Cu levels significantly increased soil pH and Mehlich 1 extractable soil Cu, Zn, Mn and Fe concentrations in the soil solution.
650 $aCover crops
650 $aPlant micronutrients
650 $aRoot growth
650 $aCobertura vegetal
650 $aCobre
650 $aFertilizante fosfatado
650 $aMicroelemento
650 $aRaíz
700 1 $aBALIGAR, V. C.
773 $tAmerican Journal of Plant Sciences$gv. 5, n. 9, p. 1236-1247, Apr. 2014.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| Registros recuperados : 539 | |
| 172. |  | FAGERIA, N. K.; BALIGAR, V. C. Dry bean genotypes evaluation for phosphorus use efficiency. In: JOINT ANNUAL METTING OF THE GEOLOGICAL SOCIETY OF AMERICA, SOIL SCIENCE SOCIETY OF AMERICA, AMERICAN SOCIETY OF AGRONOMY, CROP SCIENCE SOCIETY OF AMERICA, GULF COAST ASSOCIATION OF GEOLOGICAL, 2008, Houston. Celebrating the international year of planet earth: abstracts with programs. Austin: The University of Texas, 2008. 1 CD-ROM.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| 177. | | BALIGAR, V. C.; FAGERIA, N. K. Plant nutrient efficiency: towards the second paradigm. In: SIQUEIRA, J. O.; MOREIRA, F. M. S.; LOPES, A. S.; GUILHERME, L. R. G.; FAQUIN, V.; FURTINI NETO, A. E.; CARVALHO, J. G. (Ed.). Inter-relacao fertilidade, biologia do solo e nutricao de plantas. Lavras: SBCS: UFLA, 1999. p. 183-204.| Tipo: Capítulo em Livro Técnico-Científico |
| Biblioteca(s): Embrapa Arroz e Feijão. |
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| Registros recuperados : 539 | |
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