The elements drawn as nutrients from the soil by plants are often classified according to their role in the yield of crops into primary essential elements N (nitrogen), P (phosphorus), K (potassium). secondary elements, Ca (calcium), Mg (magnesium), S (sulphur). micronutrient elements ie Fe (iron), Mn (manganese), Zn (zinc), Cu (copper), B (boron), Mo (molybdenum), Co (cobalt), Cl (chlorine), Ni (nickel).
সম্ভবতঃ কাউকে জয় আর কাউকে পরাজয় বরণ করতেই হয়।Samanantar Samanantar