100 DISEASES OF GINSENG. 



average of the benefits obtained this summer. Quit« a number 

 of gardens were also visited which had not been treated with acid 

 phosphate. A few of these were nearly free from fiber rot, but 

 the majority of them were very badly infected. 



[Acid phosphate may be applied by distributing it evenly 

 on top of the beds, where beds already planted are to be treated, 

 but the better wa.v is to work it into the soil. 



The variety of acid phosphate said to be best for treating 

 ginseng beds, is such as contains no potash or nitrogen. It can 

 be bought from dealers in commercial fertilizers at about S17.00 

 per ton. It comes put up in sacks containing from 100 to 125 

 pounds. 



Dr. K. Miyake, from the Imperial University of Japan, an 

 accomplished b<>tauist and plant patholoj^ist, and Mi\ M. Tomiiye, 

 ginseng expert in the Administration Bureau of the Government, 

 visited this country in the summer of 1910 in the interest of the 

 Korean Government, for the purpose of studying the American 

 methods of controlling diseases of ginseng. They visited many 

 gardens in Wi.scon*<in as well as in other states during their stay 

 here, and from them it was learned that in Japan they ai'e trou- 

 bled with a similar disease as that which is known in this country 

 as "end rot," "til.'er rot," "rust", or "scab," and they said that 

 the ravages of the disease had reduced t!ie output of dry root in 

 the Korean gardens from 60,000 pounds in 1904 to 2,000 in 1909. 

 And it was since learned from another source that the Chinese 

 gardens in the same length of time have dropped from an annual 

 output of 350,000 pounds of dry root, to 7,00" pounds. 



Dr. Miyake, who speaks English fluently, having studied 

 part of the time in the State College of Agriculture, Cornell Uni- 

 versity, said that he had made some tests, and obtained the best 

 results in the control of rust by merely dipping the roots, before 



