Fungal diseases research of potatoes in Absheron and comprehensive measures to combat them

Potato ( Solanum tuberosum L.) is an annual herbaceous plant growing vertically at a height of 80-100 cm and forming a starch-rich tuber. Potatoes contain on average 76.3% water, 23.7% solids, including 17.5% starch, 0.5% sugar, 1-2% protein, up to 1% mineral salts, contains vitamins C, B1, B2, B6, PP, K and carotenoids. Common potato disease problems include foliar (leaf) diseases, wilting, young plant diseases, tuber diseases, bacterial, viral and fungal diseases. Examples for the main diseases damaging potato in Azerbaijan are late and early blight of potato, Rhizoctonia canker and black scurf. The pathogens of these fungi diseases - Phytophthora infestans (Mont.) de Bary, Alternaria solani Sorauer, Rhizoctonia solani J. G. Kühn affect the leaves, stems and potato tubers, cause serious damaging of product and decreasing in the quality of tubers. Agricultural and chemical measures are carried out to avoid both diseases.