Thegoal of our study was to determine the calculation methods of leaf surface area of apple trees. The investigations were carried out in the intensive or chard of the experimental didactic station “Criuleni” planted with two-year saplings of the following varieties: Golden Delicious and Mantuaner, grafted on M4 root stock, using the distance of planting of 5x 3 m.The trees were formed by the freeg rowing palmette type.The leaf surface are a was determined for all the calculable trees by the way of measuring and numbering. In order to determine the dimensions of the assimilation surface there were measured the entire annual shoots longer than 4-5 cm. Moreover, the spurson the multi annual wood were counted too. At the same time it was determined the quantity of leaves on an annual shoot andon a spur.Using the existing data,the leaf surface area per tree and per area unity was calculated. The elements used in the calculation technology are listed in the table.