u 



for the destruction of the rust mite. One of the eómmendable 

 features of the concoetion is that it does not kill the parasities. 

 The formula is as follows : 



English Metric. 



Sulfur (the sublimed powder 



is best) . . . . 10 to 15 pouds or 4.5 to 6.8 K. 



"Wheat flour 4 lbs. or 19 kilos. 



"Water 100 gallons or 380 litres. 



The flour should be boile'd with water to make a paste and 

 the sulfur should be stirred with a small amount of water. Mix 

 thoroughly and apply with a spray pump. 



The sulfur mixture acts slowly on the mites and in a time 

 of frequent rains might not be satisfactory. 



SULFUR DUST.— Unadulterated sulfur dust may be used 

 against red spider and rust mite of citrus tres and against 

 various other mites. The application may be made by simply 

 throwing the flowers or sulfur upon the affected plañís or it may 

 be made with a dust gun. The application should be heavy. As 

 with the sulrur and flour paste the efficiency of the treatment is 

 doubtful if frequent showers prevail at the time of application. 



TOBACCO DECOCTION.— Probably one of the most prac- 

 ticable of the contact sprays for use in Cuba is the tobáceo dec- 

 oction prepared from the refuse stems, bits of leaf, etc., from the 

 tobáceo factories. 11 is used principally upon sofi bodied inseets 

 such as plant tice, etc., and probably has a grater field of 

 application in the vegetable gardens than in any other place. 

 There is no danger of injury to the plants Prom its use. For- 

 mula : 



English Metric. 



Tobacco 1 Ib. or 0.5 kilo. 



Water 1 gal. or 3.8 litres. 



Boil until a deep brown liquid results; pour off and dilute 



to make two gallons. 



