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ASSESSMENT OF VARIETY VALUE FOR CULTIVATION AND USE (VCU)
 
     The varieties of all agricultular plants, except of lawn grasses (71 species) are officially assessed for their value for cultivation and use. The positive result of the VCU assessment of the variety is the precondition to enter it into the national list (NLI).
    The VCU testing system is based on the results of field trials carried out in different regions of the country. The VCU trials are conducted as a one-factorial (variety)experimentin in 3-4 replications or in some cereal species as 2-3 factorial (variety and pesticide treatment) experiments. They are carried out in 6-16 locations depending on the economical importance of species. The field trial results are supplemented with the laboratory analyses and special tests.
    Registration decisions are taken after two or three trialling seasons.
    Among the different criteria of the VCU assessment, the most significant ones are:
yield and its stability
quality
resistance to diseases and pests
tolerance to abiotic stress.