Insecticides, Fungicides and Spray Machinery 173 



and the molasses mixed with 1 gallon water. The 

 lemons or oranges should be chopped into %'ery fine par- 

 ticles and put in the sirup and the poisoned bran 

 moistened with the sirup until it makes a stiff mash. 

 It should be applied very late in evening by putting one 

 spoonful near each plant or by broadcasting over field. 

 It is strongly recommended for cut-worms and army- 

 worms. 



Bordeaux mixture is used in combatting most fungous 

 diseases and also repels certain insects, such as flea- 

 beetles. It is prepared as follows : 



Unslacked lime 4 pounds. 



Copper sulfate (bluestone) 4 pounds. 



Water 50 gallons. 



The lime should be slacked in enough water to make a 

 milk of lime solution, and the bluestone should be dis- 

 solved in water to take the amount in the formula. 

 The bluestone solution should then be poured into the 

 lime and this mixture diluted to the full 50 gallons 

 strength. It is important that. very cold water be used 

 in preparing this spray, if possible ice water. The 

 mixture should be kept in a very cool place. Bordeaux 

 mixture may be combined with any of the insecticides, 

 thus making a dual spray. 



Carbon bisulfid is a fumigant and should not be ap- 

 plied to live plants of any kind. It is valuable as 

 a storage product insecticide. It is bought from drug- 

 gists in small tin packages or demijohns.. It is a liquid 

 and is applied by using 3 to 4 pounds of the material 

 to 1000 cubic feet space for a period of 30 hours. It 

 should always be placed in an open vessel on top of the 

 material to be fumigated. To be effective, it must be 



