8 
in the row. Soft redwood posts are unsatisfactory as they are often 
seriously damaged by carpenter bees. The posts should be substan- 
tially braced at the ends of the rows and at about every 200 feet in 
the row. Each post should have a crosspiece of strong wood 2 by 4 
inches and 2 feet long, spiked on near the top for the support of two 
no. 8 galvanized wires which are strung tightly above and stapled, 
one near each end of the top edge of the crosspiece, so as to form 
horizontal, parallel lines about 2 feet apart (fig. 1). 
The seedlings are set midway between the posts in the rows at 
about 15 feet apart. In doing this, each plant is taken from its con- 
tainer without disturbing the soil on the roots and set in the moist 
earth of the field. Several weeks after transplanting, each will begin 
to develop several vigorous branches from near the ground, and 
Figure 1. — The purple passion fruit {Passiflora edulis) in field culture rest at the Kona 
substation. The vines are set at 10 feet apart in rows and trained on trellises con- 
sisting of two heavy wires supported at 22 inches apart on crossbars of the posts. 
these are allowed to reach several feet in length. The strongest 
one is then tied up to a temporary stake connecting with one of the 
wires above and the remaining branches of the plant cut away 
so that all of the plant food, absorbed by the root system, may be 
utilized by the remaining stem to produce a vigorous growth. "When 
this growth extends to a few inches above the trellis, it is tied to 
one of the wires and the terminal bud cut off to force lateral 
branches. Only two are allowed to develop at this point, one reach- 
ing to each wire where it may divide again, spreading both ways 
and developing fruiting branches at intervals of about a foot. These 
branches are trained alternately over the wires and allowed to hang 
down. This arrangement distributes the weight of the vine over 
the two wires, utilizes all of the space between posts, and tends to 
give a comparatively open top for the circulation of air and the 
penetration of sunlight. 
