The problem, which caused insignificant damage, became a major problem in calcareous and wet soils (SEELIGER 1933); we still do not have a rootstock that would satisfy all requirements. The evaluation of the trials suffers from another difficulty, which is also encountered in other agricultural trials, but to a much lesser extent. In the case of grapevine, it is not so much the yield that is of decisive importance, but rather the quality; it can be influenced much more strongly by cellar measures than is the case with other foodstuffs through their processing. Although paper and gas chromatographic methods have made great progress in objective analysis, the importance of organoleptic testing, and thus subjective determination, remains unparalleled. Together.