ASSESSMENT OF GRADES OF EARLY POTATOES IN THE FOREST-STEPPE OF UKRAINE

For today, new grades of potatoes prevail over old on productivity, but cultivation of such grades in production and in certain soil and climatic conditions not always gives desirable effect. Such phenomenon is caused by underestima-tion of signs of ecological plasticity of a grade that is especially important for potatoes. Therefore, the selection of the early grades adapted for the Forest-steppe with the short vegetative period has to conform to requirements. The results of research on studying of grades of early potatoes, features of phenological growth stages and development, productivity in the Forest-steppe of Ukraine are given in the article.