[ËkujbÉ¨ÊÉ¨f]), is the sixth largest city in Russia and the administrative center of Samara Oblast. It is situated in the southeastern part of European Russia at the confluence of the Volga and Samara Rivers on the east bank of the Volga.amara is the home of Samara State Aerospace University (SSAU), one of Russia's leading engineering and technical institutions. SSAU faculty and graduates have played a significant role in Russiaâs space program since its conception.
Macronutrients are required by the plant in large quantities for basic plant growth and development. The macronutrients include: nitrogen, phosphorus and potassium. Secondary nutrients are required in moderate amounts and are less likely to limit crop growth. These nutrients include: calcium, magnesium and sulphur. 1  Nitrogen. 2  Phosphorus. 3  Potassium. 4  Calcium. 5  Magnesium. 6  Sulfur.
yield also requires knowing the rate to apply, the method and time of application, the source of nutrients to use, and how the elements are influenced by soil and climatic conditions. There are 16 nutrient elements required to grow crops (Table 1). Three essential nutrientsâcarbon (C), hydrogen (H), and oxygen (O 2)âare taken up from atmospheric carbon dioxide and water. The other 13 nutrients are taken up from the soil and are usually grouped as primary nutrients, secondary nutrients, and micronutrients. The primary nutrientsânitrogen (N), phosphorus (P), and potassium (K)âare commonly found in