Most plants begin life as germinating seeds.
Germination begins when the seed absorbs water and ends when the primary root emerges.
Germination is the period in which plants are most susceptible to adverse environmental conditions and many plants will die. Water is absorbed, the seed coat softens and cracks open as the embryo swells 2. Primary root emerges to absorb more water and nutrients Absorption occurs because water molecules always move from an area of high concentration to an area of lower concentration . Since there is more water outside of the roots than inside, the water will move in. When you overfertilize you produce an environment where there is less water outside of the root.