SUMMARY

The aim of the present paper was to analyze important productivity features of new agri­ cultural crop varieties from the Srpska Republic admitted for introduction into production in Yugoslavia in the 1992-1998 period.

In keeping with positive statutory regulations of the FR of Yugoslavia a new variety may be registered or admitted for introduction into production only if, following previous exami­ nation in varietal microtrials and laboratory tests performed in keeping with uniform meth­ odics, according to its essential features (yield and main product quality, resistance to dis­ eases, winter hardiness, etc.) it results superior to the control varieties used.

The results obtained in field trials and laboratory tests with ten varieties created in the Re­ public of Srpska admitted for introduction into production in Yugoslavia, and thus: 6 winter wheat varieties, 2 soybean varieties of the "O" maturity group and 2 alfalfa varieties in the 1992-1998 period are presented in this paper.

The said results were processed with the application of variance analysis for triple classi­ fications in order to encompass three trial factors: variety, locality (trial locality) and year.