468 STATE BOARD OF AGRICULTURE. 



of fruit trees at this time. By using a fine nozzle it can be sprayed upon 

 the trees and will go as far as twice the quantity of other insecticides. 

 For trees infested with San Jose" and other scale insects this will be a 

 cheap and effective remedy. Care should be taken to spray upon warm, 

 bright days, and while the trees are dry, so that the kerosene will 

 quickly evaporate and thus lessen the danger of injury to the trees. 



TOBACCO. 



Many insects can be destroyed by the use of tobacco dust or smoke, 

 hut for insects on orchard trees "tobacco water 1 ' will be better. It is 

 particularly valuable as a remedy for plant lice, although to be effectual 

 it should be applied before the leaves have closed over the insects. The 

 decoction can be made by soaking a half bushel of tobacco stems in a 

 barrel of water for five or six hours. If wanted for use immediately 

 the water should be hot. The stems can be used for several barrels of 

 water, the color and odor of the water indicating when they have been 

 exhausted. 



POTASH LYE. 



For spraying trees while dormant to destroy insects, fungi, and secure 

 a smooth bark, use 



Black potash 2 pounds 



(or concentrated lye 1^ " ) 



Water 5 gallons 



Care should be taken in preparing and applying this solution as it is 

 very caustic. It can only be used while the trees are dormant. 



The addition of one pound of lime and an ounce of Paris green to the 

 above makes it especially valuable for the trunks of trees to keep away 

 borers. 



WHALE OIL SOAP. 



For all classes of insects, and particularly for those that suck the sap, 

 whale oil soap, made from fish oil and potash, is an excellent remedy. 

 Among the best brands are those manufactured by James Good, Hurst 

 St., Philadelphia, who sells his Potash No. 3, at three and one half cents 

 per pound in barrel lots, and from five ro ten cents in smaller quanti- 

 ties. The Anchor brand of Leggett and Brother, 301 Pearl St., New York, 

 is sold at four cents per pound by the barrel, or at six and one half cents 

 per pound for fifty pounds. Both are reliable brands. 



For scale insects it should be as strong as one or even two pounds to 

 the gallon of water, to be applied hot while Ihe trees are dormant. After 

 growth starts the amount of water should be increased to five gallons to 

 a pound of the soap. Whale oil soap may be used in making kerosene 

 emulsion. 



