1.Create a controlled photosynthetic process (atmosphere, lighting levels, humidity)
2.Use “macro” nutrients to fertilize the crops (nitrogen, phosphorus, and potassium)
3.Secondary nutrients are also needed - calcium, magnesium, and sulfur
4.Use of micronutrients (boron, chlorine, copper, iron, manganese, molybdenum, and zinc)
5.Essential elements - carbon, hydrogen, and oxygen.