APPENDIX A. 



USEFUL INFORMATION. 



T 



COST OF INSECTICIDES. 



HE coi^t of insecticides depends on the lo^al i»-ices of the various ingredients, but 

 the following may be taken as average prices per 100 gallons (12 maunds) : — 



Ks. A. r. 



Lead arscuiate .... 

 Kerosene emulsion, soft soap 



„ „ hard „ 



Rosin wash .... 



„ compound 

 McDougal's Insecticide 

 Crude oil emulsion . . 



The quantity of insecticide used per acr 



Cotton or Tur .... 



Youug Sorglmm 



Sweet Potato, Groundnut, etc. 



Coffee 



Tea 



Mustard . . . • • 



Wheat . .■ . 



inous crops is as 



follows : — 



80 to 100 gallons. 



60 



60 



80—160 



75—150 



60—100 



50—80 



FORMUL/E. 

 I.— Lead Arseniate. 



Paste— One pound in 66 gallons of water with the addition of 3 pounds of lime 

 and 6 pounds of jaggery or gur if available. Stir well before applying. One ounce 

 of paste is the charge for a kerosene tin full of water or for the Knapsack Spraying 

 machine. 



Potvdet:—Om pound in 100 gallons of water with 5 pounds of lime and 10 pounds 

 of jaggery or gur. Stir well. The charge for a kerosene tin of water is two-thirds of 

 an ounce, about a teaspoonful. 



One pound miied well with 20 to 50 pounds of any fine neutral powder, such as 

 lime, ashes, road dust, etc. 



2. — Kerosene Emulsion. 



Boil half a pound of sliced har soap in 1 gallon of Water till dissolved. ^ Take 

 off the fire and add 2 gallons of kerosene, agitating or beating the mixture till the 

 kerosene is completely emulsified. This is stock solution to be diluted with 6 to 10 

 parts of water before use. With hard water more soap is required. 



3.^--Crude Oil Emulsion. 



One gallon of emulsion mixed with 66 gallons of cold water. The charge for a 

 kerosene tin full of water is half a pint. 



