|
|
|
|
|
| Streck,Nereu Augusto; Lago,Isabel; Gabriel,Luana Fernandes; Samboranha,Flavia Kaufmann. |
| The objective of this study was to adapt a nonlinear model (Wang and Engel - WE) for simulating the phenology of maize (Zea mays L.), and to evaluate this model and a linear one (thermal time), in order to predict developmental stages of a field-grown maize variety. A field experiment, during 2005/2006 and 2006/2007 was conducted in Santa Maria, RS, Brazil, in two growing seasons, with seven sowing dates each. Dates of emergence, silking, and physiological maturity of the maize variety BRS Missões were recorded in six replications in each sowing date. Data collected in 2005/2006 growing season were used to estimate the coefficients of the two models, and data collected in the 2006/2007 growing season were used as independent data set for model evaluations.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Zea mays; Degree days; Development; Modeling; Thermal time. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000400002 |
| |
|
|
| Streck,Nereu Augusto; Gabriel,Luana Fernandes; Samboranha,Flavia Kaufmann; Lago,Isabel; Schwantes,Ana Paula; Schons,Alfredo. |
| The Wang and Engel (WE) model simulates crop development considering the non-linear response of plant development to temperature. Daily air temperature is the input for the temperature response function [f(T)] in the WE model, and because there are several approaches for computing daily temperatures, there are several ways to calculate the f(T). The objective of this study was to compare two versions of the WE model for simulating leaf number and developmental stages in maize, considering two approaches for imputing daily air temperature (daily mean air temperature and daily minimum/maximum air temperature). A two-year field experiment with the maize variety BRS Missões sown in several sowing dates was conducted in Santa Maria, Rio Grande do Sul State,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crop models; Zea mays; Leaf number; Phenology. |
| Ano: 2009 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782009000300003 |
| |
|
|
|
