SUBSEQUENT CARE OF THE PLANT 



177 



much used: Quicklime, 201bs.; sulfur (flour or flowers), 15 Ibs.; 

 water, 50 gals. Place the lime in a kettle. Add hot water grad- 

 ually in sufficient quantity to produce the most rapid slaking 

 of the lime. When the lime begins to slake, add the sulfur and 

 stir together. If convenient, 

 keep the mixture covered 

 with burlap to save the heat. 

 After slaking has ceased, 

 add more water and boil t 

 mixture one hour. As the 

 sulfur goes into solution, a 

 rich orange-red or dark green 

 color will appear. After boil- 

 ing sufficiently, add water to 

 the required amount and 

 strain into the spray tank. 

 The wash is most effective 

 when applied warm. This 

 mixture can be applied safely 

 only when the trees are dor- 

 mant, late in the autumn 

 after the leaves have fallen,, 

 or early in the spring before Fig. 73. Disease of cucumber leaf, the dying 

 the buds swell. margin indicating that the trouble is due 



299a. Bordeaux mixture to 80me cuttin - ff of tbe food ^w^y. 

 is the standard fungicide. It is made of copper sulfate, 5 Ibs. ; 

 stone lime or quicklime (unslaked), 5 Ibs.; water, 50 gals. The 

 strength varies according to the plant to be sprayed. Bordeaux 

 maybe prepared in the following way: 



Copper snlfatc. Dissolve the required amount of copper sul- 

 fate in water in the proportion of one pound to one gallon several 

 hours before the solution is needed; suspend the copper sulfate 

 crystals in a sack near the top of the water. In case large quan- 

 tites of stock solution are needed, two pounds of copper sulfate 

 may be dissolved in one gallon of water. Lime. Slake the lime 

 in a tub or trough. Add the water slowly at first, so that the lime 

 crumbles into a fine powder. If small quantities of lime are used, 



