Nutrients for plants are usually available through the nutrient solution. The three most needed by plants are the major macro-nutrients and these are as follows: nitrogen (N), phosphorus (P) and potassium (K). Nutrients are required for plants to grow fast and high performance. Hydrogen, carbon and oxygen are the three main elements that are required and are readily absorbed from the water by the roots and air through the leaves. Besides these three elements, the mineral nutrient solution with the nutrient solution. This article reviews the main macro-nutrients NPK or the common abbreviation. The elements are disorders.NitrogenNitrogen nutrients for energy, with a chemical symbol N, is a major macro-nutrients essential for plant growth. The atmosphere is 78% nitrogen. Gardening on the floor, there is a mechanism known as nitrogen fixing nitrogen in the air in a form that can be absorbed by the roots.Nitrogen is very essential, because once the plant is converted into proteins. These proteins are necessary for the production of new cells for plant growth. Therefore, is responsible for the leaves and stems, and the replacement of old equipment parts.The nitrogen deficiency manifests in older leaves first. Older leaves yellow color. We may also note that the new leaves and stems are weak. The contrast supply growth, excess nitrogen will be soft and weak. Excess nitrogen also prolonged delay of the fruit and will hurt your overall yield.PhosphorusThe following macro-nutrients, phosphorus or the chemical symbol P. This is essential for photosynthesis, the process of cooking real power plants that occur in the leaves. It also acts as a catalyst for the rapid transfer of energy within the plant system.Phosphorus is also a prerequisite for building strong root system of the plant. Moreover, it is vital for flower and seed production studies have shown that sufficient phosphorus is essential, while germination and nitrogen flowering.Like weaknesses, deficiencies of phosphorus are also shown in the older leaves first. You will notice an unusual green leaves of a plant growth retardation. Moreover, the presence of brown spots on leaves or purple Phosphorus.PotassiumPotassium confirms the fault, with a chemical symbol K is also essential in photosynthesis, by increasing the chlorophyll in the leaves. It also acts as a regulator of stomatal openings to absorb oxygen better. Its role in triggering the production and transport of sugars and starches, although the plant is also another important role.Potassium is the requirement for strong root growth for better water absorption. It also activates enzymes to control the plant. Potassium is usually very important in the hydroponic garden higher yields. It is vital for all stages of growth due to its involvement in cell division, particularly in development.Signs result of potassium deficiency are the patches of older leaves with yellow spots between the veins, dark yellow for younger leaves, flowers and fruit drop. As a warning, cheat potassium deficiency as the plants grow and look healthy.