This section is from the book "The Standard Cyclopedia Of Horticulture Vol2", by L. H. Bailey. See also: Western Garden Book: More than 8,000 Plants - The Right Plants for Your Climate - Tips from Western Garden Experts.
Spray a patch of clover or some other plant that the insects will eat with pari3 green or some other arsenical; mow it close to the ground, and while fresh place it in small piles round the infested plants. To avoid wilting of the bait, cover the heaps with a shingle or piece of board.
White arsenic, one-half pound, or paris green, one pound; bran, fifty pounds. Mix thoroughly and then add enough water to make a wet mash. Sugar or molasses may be added, but is unnecessary. Poisoned baits are used against cutworms and grasshoppers.
This bait is the most efficient means of controlling grasshoppers yet devised. It is prepared as follows: Bran, twenty pounds; paris green, one pound; syrup, two quarts; oranges or lemons, three fruits; water, three and. one-half gallons. Mix the bran and paris green thoroughly in a wash-tub while dry. Squeeze the juice of the oranges or lemons into the water; chop the pulp and peel fine and add them also. Dissolve the syrup in the water and wet the bran and poison with the mixture, stirring at the same time so as to dampen the mash thoroughly. Sow the bait broadcast in the infested area early in the morning.
Mix one pound of paris green with one-half barrel of horse droppings, and add one pound of salt if the material is not fresh. For use against grasshoppers.
Gas tar is used extensively for painting wounds to keep out the moisture and prevent the entrance of insects. It is also sometimes used on peach trees to keep out the borers. In this case it should be applied in the spring only, as there is danger of injuring the trees in the fall.
Certain grades of asphalt have been used successfully on peach in California to keep out the Pacific peach tree-borer. Experiments in the eastern states indicate that it may be used to advantage against the common peach tree-borer.
Submerge affected plants or branches in water at a temperature of about 125°. For aphis. It will also kill rose-bugs at a temperature of 125° to 135°.
The gasolene torch has been successfully used for the control of scale insects on date palms in Arizona. The trees are first pruned closely, drenched with gasolene and fired. They are then scorched with a gasolene blast torch.
Mix a cheap grade of wheat flour with cold water, making a thin batter, without lumps; or wash the flour through a wire screen with a stream of cold water. Dilute until there is one pound of flour in each gallon of mixture. Cook until a paste is formed, stirring constantly to prevent caking or burning. Add sufficient water to make up for evaporation. For use, add eight gallons of this stock solution to one hundred gallons of water. Used for red spider in California.