Nutrient uptake by trees is determined by root interception, soil availability, and tree demand. Fruit trees have low rooting density, especially in the case of dwarfing rootstocks. Mobility in the soil is a key factor in determining nutrient availability, and good management of nutrients requires that supply is matched to demand, in terms of amount, timing and retention in the root-zone, and t...

The resistance of cherry, sweet cherry and pear varieties to bacterial canker was analyzed by using the method arti-
 ficial contamination unripe fruits. Two groups were highlighted among six varieties:
 Uyfehertosh Fürthosh variety exercised highest degree Turgenevka lowest degree. Three
 identified ten studied cherries; cultivar Lyubava Donetskaya turned out be most resistant, ...