| Registro completo |
| Provedor de dados: |
Agronomy
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| País: |
Brazil
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| Título: |
Light interception, leaf area and biomass production as a function of the density of maize plants analyzed using mathematical models
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| Autores: |
Portes, Tomás Aquino
Melo, Hyrandir Cabral de
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| Data: |
2014-04-16
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| Ano: |
2014
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| Palavras-chave: |
Ciências Agrárias Fisiologia de Plantas Cultivadas age
Corn
Radiation
Yield Fisiologia de Plantas Cultivadas
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| Resumo: |
Mathematical models were tested to correlate the leaf area index (LAI) of maize to the percentage of light intercepted by the canopy (% LIC) and this with the total dry matter of aerial parts (TDM), as well with the grain yield (GY). The experiment was conducted in a randomized block design, with four replications. The treatments consisted of hybrid maize at five plant densities: 4.0, 2.66, 2.0, 1.6, and 1.3 plants per m2 (pl m-2). At densities of 4.0 and 2.66 pl m-2, the average LAI and TDM did not differ among themselves but were significantly higher than those presented at the densities of 2.0, 1.66 and 1.3 pl m-2, which also did not differ among themselves. The number of corncobs per plant (cob pl-1) and GY behaved similarly. The LAI grew exponentially with the plant density. For all ages of plants, the exponential model fit well with the % LIC values according to the LAI and also fit well to the data of dry mass as a function of % LIC. GY depending on the density fit well to quadratic, exponential straight line and logarithm-modified equations, and the number of cobs per plant depending on the density fit well to hyperbolic and exponential-modified equations.
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| Tipo: |
Info:eu-repo/semantics/article
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| Idioma: |
Inglês
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| Identificador: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17892
10.4025/actasciagron.v36i4.17892
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| Editor: |
Universidade Estadual de Maringá
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| Relação: |
http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17892/pdf_41
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| Formato: |
application/pdf
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| Fonte: |
Acta Scientiarum. Agronomy; v. 36, n. 4 (2014); 457-463
Acta Scientiarum. Agronomy; v. 36, n. 4 (2014); 457-463
1807-8621
1679-9275
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