8 MISC. PUBLICATION 650, U. S. DEPT. OF AGRICULTURE 
SOURCES OF COMMERCIAL SUPPLIES 
Prior to 1939 most of the total crude and pulverized lonchocarpus 
root entering world markets was harvested in the Brazilian States of 
Amazonas and Paré. Since then, however, the quantity of roots 
grown for export on Peruvian plantations has steadily increased to 
the current figure. At the present time, judging from the volume 
of production, approximately 12,000 to 18,990 acres are devoted to ~ 
lonchocarpus culture in eastern “Peru. By comparison, the cultiva- 
tion of this crop for export has hardly begun in Bolivia, Ecuador, 
Colombia, Venezuela, and the Guianas, to which countries rotenone- 
bearing species of lonchocarpus are also native. Only slightly more 
interest has developed in Brazil, despite that country’s one-time 
dominance of the market. 
The principal production centers in Peru are located near the 
villages of Lagunas, Yurimaguas, and Tingo Maria (fig. 4), on the 
Ficure 4.—Plantation of lonchocarpus about 3 vears old; Tingo Maria, Peru. 
Huallaga River; Jeberos, between the Huallaga and the Maranén 
Rivers; Contamana, on the Ucayali River; Barranca and Nauta, on 
the Mar anon; Iquitos and Tamshiyacu, on the Amazon; and Satipo, 
on the Satipo, which is a tributary of the Tambo River. In Brazil 
plantings are found near Belém, Portel, Mazagaéo, and Macapa, 
which are close to the mouth of the Amazon; at Pérto de Moz, on 
the Xingt; at Belterra, on the Tapajéz; and in the environs of several 
villages along the Amazon, Negro, and Madeira Rivers in the State 
of Amazonas (10). In Venezuela small plantings are reported near 
El Tigre, in the State of Anzoategui, and on the Orinoco islands of 
Urbana and El Infierno on the western border of Bolivar State (8). 
Introductions of lonchocarpus have been made for adaptation and 
