[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.
A plant needs nutrients to survive. Most of these are provided by the soil, but soil varies tremendously in nutrient amounts, soil type, pH, and nutrient availability. The three main nutrients that have been identified as absolutely necessary for plants are nitrogen (N), phosphorus (P) and potassium (K). These three are also known as macronutrients, and are the source of the three numbers commonly found on organic fertilizer labels. The numbers found on our All-Purpose Fertilizer, for example, are 5-5-5. This is the percentage by weight of the N, P, and K found in the fertilizer. So whatâs so important about nitrogen, phosphorus and potassium?