massachusetts 

 Agricultural Experiment Station 



BULLETIN No. 201 MARCH, 1921 



INSECTICIDES AND 

 FUNGICIDES 



FOR FARM AND ORCHARD CROPS 

 IN MASSACHUSETTS 



By E. B. HOLLAND, A. I. BOURNE 

 and P. J. ANDERSON 



On the quality of the insecticides and fungicides used 

 depends in large measure success in spraying and dusting 

 plants to control insects and diseases. Quality is to a 

 degree indicated by the guaranty; to a further degree by 

 the methods actually used in handling the material. 



This bulletin treats of the composition of insecticides 

 and fungicides, the conditions under which the various 

 materials and mixtures are effective, presents tables show- 

 ing standard formulas for application, a diagram showing 

 safe and dangerous mixtures of materials, and finally a table 

 showing the guaranties of a number of proprietary articles. 



Requests for Bulletins should be addressed to the 



AGRICULTURAL EXPERIMENT STATION 



AMHERST, MASS. 



