56 DISEASES OF GINSENG. 



CHAPTER XIX. 



DISEASES OF GINSENG. 

 ADAPTED FROM PROF. H. H. WHETZEL. 

 KEY TO SOME GINSENG DISEASES. Below is given a key to the 

 more common diseases of ginseng, which, it is believed, will be 

 found very serviceable to growers in determining the diseases which 

 may appear in their gardens: 

 FUNGUS AND BACTERIAL DISEASES OF GINSENG. 



/. Diseases affecting the roots alone. First detected by 

 the sudden wilting or l^y the premature coloration of the lea- 

 ves. Treatment: Thorough drainage and soil sterilization. 



1. Affected Seedlings. 



A. Leaves becoming bronzed then reddish and finally 

 dying. 



Tip of root rotten-soft * * * END ROT OF SEED- 

 LINGS. 



Treatment: Application of acid phosphate fertilizer, from 

 1000 to 2000 lbs. to the acre, and dii)[(ing affected roots in Bor- 

 deaux for five minutes at time of transi)lanting, 



B. Stems suddenly falling over, making the bend at the 

 surface of the soil, or they may wilt suddenly. * ■'■ * DAM- 

 PING OFF. Treatment: Aeration ]>y stirring of surface soil. 

 Spraying plants with ammonia solution using 3oz. aqua ammonia 

 to one gallon of water. 



2. Affecting older plants. 



A. Sudden wilting of the leaves. Roots apparently all 

 right. Showing a circle of yellow dots about the core when cut 

 across. " * * WILT. Treatment: Digging up affected roots 



