In Poland’s main apple-growing region, south of Warsaw, frosts and freezes are a fact of life, according to Dr. Augustyn Mika, professor at the Research Institute of Pomology and Floriculture in Skierniewice. The apple growing region around Grójec is dry with annual rainfall of 500 millimeters (20 inches). Evaporation is also low because of cool temperatures. The soils are poor and the winters can be severe, as cold air moves in from Russia to the east. The area had six major freezes during the last century. Each time, about a third of the trees were lost and another third were […]