Soil nutrient management is essential to producing healthy, marketable ginseng roots.  Soil analysis is a source of information to guide you to the proper use of  fertilizers and other soil amendment practices.  In addition, tissue analysis can detect a nutrient deficiency before symptoms appear in the plant.  Many nutrient deficiencies are hard to recognize visually.  Diagnosis of "hidden hunger" is often corrected by monitoring the tissue nutrient levels through foliar analysis.  Once symptoms of nutrient deficiency appears, it is usually too late to avoid production loss.