Plant productivity is directly related to the activity and level of the microorganisms in the soil. Without the army of microbes, the soil will soon become hard and compacted; water and oxygen will not be readily absorbed; the roots will be underdeveloped; the plant will be poorly fed; soon weeds and disease will take residence and rob the plant of its good health. Microbes, the invisible caretakers of all crops, are the key to healthy, profitable plant production.