sustained plant growth is dependent on the availability of moisture, light , temperature, nutrient minerals and carbon dioxide (co2). A deficiency of any one of these factors is growth limiting. Plant shoot and root systems typically maintain a complementary relationship. Photosynthate intended for the fibrous roots and shoot apical meristem are translocated to the storage organ. Likewise, water and mineral, nutrients are translocate through the storage organ to the leaves. As the plant leaf area expands,water loss through transpiration also increases. The increase of water loss is replenished by greater water absorption from an enlarging root system. Leaf, shoot and root enlargement also requires greater amounts of mineral nutrients which are absorbed along with the soil water by the root system. A prolonged deficit or excess of soil moisture will limit growth. Shoot and leaf tissues utilize light energy, CO2 and water in the process of photosynthesis that produces the photosynthates used with mineral nutrients to form new plant tissues. Oxygen is important in the respiration processes of all plant tissues and for root absorption of soil water and minerals