FUMIGATION OF CITRUS TREES. 5 
acid are furnished by the contractor at a certain price per pound, 
ough sometimes the grower himself supplies them. In the latter 
i the sole consideration is the cost of covering per tree. 
BY ASSOCIATIONS. 
A citrus association is composed of a large number of growers from 
the same district organized for the purpose of cooperation in the 
handling of their fruit. Some of these associations own fumigating 
outfits which are utilized in the treatment of orchards belonging to 
its members. The manager of the association looks after the pur- 
chasing of chemicals and supplies, and also selects competent men to 
run the outfits. The inspector of the district usually directs the 
movements of the outfit from one orchard to another. Under this 
system the chemicals and labor are supplied at actual cost, plus a 
slight allowance for the purchase as well as wear and tear of equip- 
ment. In short, this system is supposed to be merely self-supporting, 
BY COUNTIES. 
Each .of the county boards of horticulture owns a greater or 
smaller number of fumigation tents. In San Bernardino County this 
system has reached its greatest development, for here the horticul- 
tural commission owns fully 500 tents and carries on more work 
annually than all other systems combined. This fumigation is under 
the personal direction of a county horticultural officer. The cost to 
the grower of treatment by these outfits is usually what it actually 
costs the county to perform the work. An important consideration 
in favor of the system of county owned tents is that it readily enables 
the treatment of trees on city lots and in small orchards in out-of-the- 
way places which otherwise would in all probability be neglected. 
BY PRIVATE INDIVIDUALS. 
Many citrus fruit growers who control a considerable acreage have 
fumigation outfits for their own work. In a few cases two or three 
growers in a locality combine in owning an outfit. The private 
ownership of tents is rapidly gaining in favor and well merits this 
increased popularity, as it possesses decided advantages. 
Excepting private ownership, it would be scarcely possible to say 
which of these systems is superior. Each has its advantages. While 
one system may prove superior in one locality it might prove less 
successful in another. The reason for success or failure lies not in 
the system itself but largely in the personal element directing and 
conducting the procedure. A reckless, uneconomical, or unreliable 
director of any one system will achieve inferior results and give less 
satisfaction than a careful, economical, and perfectly reliable one 
