Fungicide protectants are applied to the seedling foliage to prevent infection from spores produced on oaks.
Various fungicide sprays are recommended by authors of ornamental handbooks.
In practice, copper has proved remarkably efficient as a fungicide when applied as sprays in the form of Bordeaux mixture to infested plants and trees.
Observations on the action of the fungicide have shown that the physiological processes of the treated plants are also affected to some degree, and a number of interesting theories and results have been put forward.
The most popular and generally useful fungicide is the Bordeaux mixture (which see).
If, however, the fungicide is upon the plant before the fungus is, the parasite may not be able to obtain a foothold.
On ornamental plants, therefore, a colorlessfungicide may be preferable.
The second most important fungicide for the home gardener is ammoniacal copper carbonate.
The standard fungicideis bordeaux mixture, made in several forms.
The best general fungicideis the bordeaux mixture.
This is unfortunate as the latter is a rather more effective fungicide as well as more convenient and pleasant to use.
The Bordeaux mixture is the best all-around fungicide known.
These are lime and sulphur as the fungicide and partial insecticide and arsenate of lead as a partial insecticide.
Up until about five years ago Bordeaux mixture as thefungicide and paris green as the poison were almost universally used.
It was due admittedly to an attack by soil fungi, but no fungicide to foliage or to the soil served its purpose.
Waite, of the Federal Insecticide and Fungicide Board, U.
