20 FU^^GI AND FUXGICIDES 



Sulphur. — Flowers of sulpliur form a valuable 

 fungicide to use against yarious mildews and other dis- 

 eases. The powder may be applied directly to the sur- 

 face of the plants to be protected, or used as a wash, or 

 in fumes. 



COMBIXIXG FUNGICIDES WITH IXSECTICIDES 



It is often desirable, in applying the fungicides 

 used in spraying, to combine with them certain insecti- 

 cides, to destroy insects attacking the crop at the same 

 time. The adyantages of this, in saving time and ex- 

 pense, are obvious. The following two combinations 

 have been found practicable : 



Bordeaux Mixture and Arsenites. — Add four 

 ounces of London purple or Paris green to fifty gallons 

 of Bordeaux mixture. This is one of the very best 

 combined insecticides and fungicides. It can be used 

 safely and effectively upon a great variety of crops — 

 such as potatoes, for Colorado beetles and blight ; apples 

 and 23ears, for insects and scab ; and plums and peaches, 

 for curculio and leaf or fruit diseases. To use uj^on 

 fruits the Green formula is probably the best, as too 

 large an amount of copper sulphate occasionally prevents 

 the perfect development of apples and pears. The 

 remarks on page 16, concerning late applications of 

 the Bordeaux mixture, are equally applicable to this 

 combination. 



Copper Arsenic Solution. — The Ohio Experi- 

 ment Station recommends the folio win 2: combination : 

 Copper carbonate, six ounces ; Paris green, four ounces ; 

 ammonia, two quarts; lime water, fifty gallons. ''The 

 copper carbonate and Paris green may be mixed and dis- 

 solved in the ammonia (more or less ammonia will be 

 required, according to the strength), after which add 

 the lime water. By lime water is here meant clear lime 

 water made by dissolving as much lime in water as it 



