Repeated measurement analyses of forages in cropping systems.

AUTOR(ES)
FONTE

INTERNATIONAL GRASSLAND CONGRESS

DATA DE PUBLICAÇÃO

2011

RESUMO

Reated measurements (RM) are common in forage experiments. The data used in this study were accumulated ammonia losses by volatilization (N)and dry matte production (DM) of cynodon dactylon cv. Coastcross pasture from an experiment in blocs with five levels of urea: 0,25, 50, 100and 200 kg of N ha , applied in five periods (Cuttings). For N, RM were the averages of cuttings and nine days of observation. THe F test for the hypothesis of no effect for period and level x period interaction (DM) and for days interaction was not affectd by univariate and multivariate tests. However, greenhouse-geisser epsilon estimate was biased downwards. Polynomial contrast in univariate ANOVA and logistic function agreed explaing acumulated N. For DM, uneaqual population variances on different was detecdc and the assumption that pairs of observations on the same subject are equally correladet was rejectd.

ASSUNTO(S)

analysis of varience statistical analysis gml mixed an reg procedures non -linear model analise de varianca analise estatistica modelo nao linear

ACESSO AO ARTIGO

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