Data/hora: 01/06/2024 02:15:04

Provedor de dados: | 1
País: | Brazil
Título: | Light interception, leaf area and biomass production as a function of the density of maize plants analyzed using mathematical models
Autores: | Portes, Tomás Aquino; Melo, Hyrandir Cabral de.
Data: | 2014-04-16
Ano: | 2014
Palavras-chave: | Ciências Agrárias  Fisiologia de Plantas Cultivadas age; Corn; Radiation; Yield Fisiologia de Plantas Cultivadas.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês

Identificador:

http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17892

10.4025/actasciagron.v36i4.17892

Editor: | Universidade Estadual de Maringá
Relação: | http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17892/pdf_41
Formato: | application/pdf

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