Analysis of soybean commercial varieties behaviour in northwestern Argentina

DEVANI, M.R; SANCHEZ, J.R; LEDESMA, F.,; MOA, D.J.,; PLOPER, L.D.

Beijing, China

Conferencia; World Soybean Research Conference VIII (WSRC VIII); 2009

Institute of Crop Science, Chinese Academy of Agricultural Sciences

  In order to achieve soybean (Glycine max L.) maximum reachable yield levels in northwestern Argentina (NWA), it is crucial to use the most advanced technology. Genetic materials play a fundamental role, so it is highly important to study the behaviour of different soybean varieties in the region. Six-season data from the ?Red de Evaluación de Variedades Comerciales de Soja del NOA? (Commercial Soybean Cultivars Evaluation Network in NWA) were used to determine the impact of different  environments on yield level in each variety. The behaviour of the varieties was first assessed in terms of their average yields in environments previously labelled as favourable and unfavourable. A 6401 RG, A 8100 RG and Munasqa RR varieties, among others, usually show yields above-average only in unfavourable environments, whereas A 7636 RG has a higher yield than average only in favourable environments. A 8000 RG, AW 7110 RR and DM 6200 RR varieties, among others, presented yield levels above average in both types of environment, while varieties such as A 4910 RG and NA 7708 RG showed yields below average. Varieties were also classified according to their adaptability to different environments. A 4910 RG, Munasqa RR, A 8100 RG and A 6401 RG varieties were labelled as "stable", with yields above average in unfavourable environments. On the other hand, A 7636 RG  and A 8000 RG varieties were classified as "adaptable", with the former being worth highlighting, because its yield was either acceptable or good in all the environments considered.