28 
FLORIDA STATE HORTICULTURAL SOCIETY. 
Lanepark, Fla. We have 480 trees that 
have been planted 1 out and fertilization 
has begun. It is intended to carry this 
work forward for at least 10 years. While 
the funds of the experiment station would 
not permit the experiment to be enlarged 
to the extent of making it complete in 
every detail, it is thought that the present 
experiment will cover some of the essen¬ 
tial points upon which we need a great 
deal more information. A sufficient num¬ 
ber of trees (10) have been set out to 
each plot; so we feel that the results ob¬ 
tained from each plot will be fairly indic¬ 
ative of what will occur on an 'entire 
field. The standard formula, or one that 
is most commonly used by the citrus 
growers, has been taken as a basis. In 
some of the plots the ammonia contents 
are increased and in others decreased. 
In others the potash contents are increased 
and in others decreased. In others the 
phosphoric acid contents are increased 
and in others decreased. In still other 
plots the sources of ammonia are changed, 
while in others the sources of potash and 
phosphoric acid are changed. So that 
while we have not made all the possible 
combinations, we still have made enough 
variations to enable us to understand 
something definite about the results when 
they occur. 
Accurate data regarding the rainfall 
and also in regard to the temperature of 
the soil and of the atmosphere will be 
kept. Chemical analyses will be made 
of the soil before beginning the work, and 
repeatedly during the progress of the ex¬ 
periment. Chemical analyses will also be 
made of the foliage, the twigs, and the 
roots of the trees, as well as of the fruit 
when it shall have matured. 
DISEASE INVESTIGATIONS. 
The investiation of diseases in fruit and 
vegetable crops has always been an im¬ 
portant piece of work; and in this con¬ 
nection we have been able to save to the 
State many thousands of dollars annually. 
While the ideal condition would be an 
orchard or field that is entirely free from 
diseases, we cannot hope to attain to that 
state of perfection immediately. As a 
matter of fact, we have to understand 
the diseases rather perfectly before we 
are able to prevent their occurrence. 
When a tree or plant has become thor¬ 
oughly diseased, no amount of theorizing 
as to how it should be treated to be kept 
well is of any value to us. We need to 
know the remedy and how to have it 
applied. 
PEACH TWIG BLIGHT. 
This disease has been causing consid¬ 
erable difficulty for some years past in 
the peach orchard. It is now being 
taken up as a special study by one of our 
assistants in the experiment station. 
CITRUS DISEASES. 
The citrus crop is the biggest money 
crop that we raise in the State, and like¬ 
wise there is probably no other crop that 
is so severely beset by diseases of various 
kinds. 
This work of remedial measures 
against such organisms as are the cause of 
diseases in citrus trees has been taken up 
by Professor Fawcett, who will speak to 
you later in regard to the diseases of 
citrus. 
In addition to the diseases of citrus 
that are caused by micro-organisms, cer- 
