LONCHOCARPUS, DERRIS, AND PYRETHRUM CULTIVATION 1] 
Figure 6.—Planting lonchocarpus cuttings; eastern Peru. 
a portion of his sustenance from the forests and the rivers. Wild 
nuts, fruits, roots, palm hearts, fish, and game contribute to his diet. 
He requires a small amount of money to buy tools, clothing, patent 
medicines, ammunition, and other essentials. Lonchocar pus is a 
cash crop ideally suited to his needs. It requires 2% to 3 years to 
reach maturity, and during the first year the plants, while still small, 
can be conveniently interplanted with food crops which will not 
interfere with the development of the lonchocarpus. 
During the second and third years the lonchocarpus grows to a 
height of 6 to 8 feet, and the plantation broadens into a bushy thicket. 
At that stage interplanting becomes impractical, although mats of 
bananas, plantains, and pineapples which have become ‘established 
are left undisturbed. The average planter has several small loncho- 
carpus fields at various stages of maturity, and in those which have 
recently been established he has little difficulty finding room for his 
subsistence crops. 
Weeding 
Using hand tools, as is the present custom, the average family 
raising lonchocarpus cannot maintain more than 5 to 6 acres in pro- 
