The following formulas are from the New York Agricultural Station and are reliable:
| Normal, or 1.6 per cent. Bordeaux Mixture | |
|---|---|
| Copper Sulphate (blue vitriol) | 6 pounds |
| Quicklime (good stone lime) | 4 pounds |
| Water | 50 gallons |
Dissolve the copper sulphate by putting it in a bag of coarse cloth, and hanging it in a wooden or earthen vessel containing five or six gallons of water. After the copper sulphate has dissolved, dilute with water to twenty-five gallons; slake the lime, and add twenty-five gallons of water; mix the two, and keep thoroughly stirred while using. If the mixture is to be used on Carnations, or the like, it will adhere better if a pound of hard soap be dissolved in hot water and added.
| Kerosene Emulsion | |
|---|---|
| Hard Soap | ½ pound |
| Boiling Water | 1 gallon |
| Kerosene | 2 gallons |
Dissolve the soap in the water; add the kerosene, and churn with a spray or force-pump until they unite and have the appearance and consistency of buttermilk. Dilute with water to twenty-five or thirty gallons before applying.
| Paris-green Solution | |
|---|---|
| Paris green | 1 pound |
| Water | 50 gallons |
Keep constantly stirred when using.
Hot-water Bath
The hot-water bath will, in nearly every case, take the place of insecticides and give better results, as it thoroughly cleanses the foliage and leaves no bad effects, if not too hot. Heat to 140° if for spraying, and use before it cools; 136° if the plants are to be dipped.
