FLORIDA STATE HORTICULTURAL SOCIETY 
43 
Discussion 
Mr. -: Does the ammoniated 
copper carbonate answer the purpose of 
Bordeaux Mixture in the case mentioned ? 
Mr. Stevens: The ammoniacal solu¬ 
tion of copper carbonate is about as good 
a fungicide as Bordeaux, but it does not 
stick so well. 
Mr. Hume: Perhaps we had better 
have Dr. Berger’s paper. Knowing 
about what Dr. Berger’s paper is to be, I 
think it very advisable to have it just at 
this time. 
Dr. Berger: The subject I am going 
to discuss, and the results of the experi¬ 
ments I have carried on, will perhaps an¬ 
swer a few questions of Professor Stev¬ 
ens’ paper. 
Prof. Stevens has stated that the in¬ 
side of a tree, for instance, having mela- 
nose, should be kept well covered with a 
fungicide. To do that with Bordeaux, 
you have to re-spray every few weeks. 
What I have found out is this: by mixing 
a small amount of linseed oil with your 
Bordeaux, you will find it will stick very 
much longer than will the Bordeaux by 
itself. I used the 5-5-20 Bordeaux; it is 
a little more than double strength, mixing 
three per cent, of linseed oil with it, and 
the Bordeaux would stick for four or five 
months. 
You can see the advantage of that right 
through in the way of protecting the fruit, 
also. 
Of course, you do not want the Bor¬ 
deaux to stick forever on the fruit, be¬ 
cause you are going to want that fruit 
to present the best appearance possible 
when the time comes to- sell that fruit. 
But if you apply Bordeaux to fruit the 
size of walnuts, apply it, say, in May, you 
will have June, July, August, September, 
October, November and December to let 
it stay there and then bring out your fruit 
bright, even if you do have to put it 
through a washing machine. Of course, 
that is only a suggestion. 
The original object of carrying on any 
experiments was another one. I was 
looking for something to mix with the 
Bordeaux to kill insects. 
