In order to evaluate the effects of place, fertilization and planting date on the classification order of 10 soybean genotypes, eight yield trials were carried out in 1994 and 1995 (six in Fonnoso do Araguaia - inter-crop period - and two in Pedro Afonso - cropping period - both in Tocantins State). The studies were done within and between places, using the Spearman’s non-parametric correlation, revealing significant alterations in the order of classification of genotype performance, thus making it difficult to replace one environment by another.