FUNGICIDES 55 



action for a week or more after having been sprayed on the 

 foliage. In the meantime it may have been removed by rain. 

 Less danger of scorching, and no clogging of nozzles, 



Pickering, Spencer V., F.R.S., Eighth Report Wobi*rn 

 Experimental Fruit Farm (1908). 



Self-boiled lime sulphur mixture. This preparation, advo- 

 cated by Dr. W. M. Scott of the U.S. Department of Agri- 

 culture^ is a combination of lime and sulphur boiled with only 

 the heat of the slaking lime, and is primarily intended for 

 summer spraying, as a substitute for Bordeaux mixture, where 

 the latter is injurious to the foliage and fruit, as in the case of 

 the peach and certain varieties of apples. It is, however, dis- 

 tinctly stated that Bordeaux mixture is the better fungicide, 

 and should be used except in those cases where scorching of 

 the foliage or russeting of the fruit follows its use. 



A satisfactory mixture consists of 8 Ib. of good quicklime 

 and 8 Ib. of sulphur to 50 gallons of water. Place the 

 lime in a barrel, and pour on a gallon of water to start it 

 slaking, and to keep the sulphur off the bottom of the barrel. 

 Then add the sulphur in a purely powdered state, adding 

 more water to slake the lime into a paste. Considerable 

 stirring is necessary to prevent caking at the bottom. After 

 the violent boiling which accompanies the slaking of the lime 

 is over, the additional quantity of water should be added to 

 to make up fifty gallons, or at all events sufficient to check 

 the boiling. Five to fifteen minutes are required for this pro- 

 cess, according to whether the lime is quick acting, or 

 sluggish. 



Before commencing spraying the mixture should be strained 

 through a fine sieve to keep back the coarse particles of lime, 

 but all the sulphur should be worked through the sieve. 

 When spraying, the mixture should be kept constantly stirred, 

 otherwise it settles to the bottom, and js not evenly applied. 



Paris green for the destruction of insects may be mixed 

 when used for spraying apples, but as this substance is 

 injurious to the peach it should not be used when this tree is 

 sprayed. 



Scott, W. M., 7.6". Dept. Agric., Bureau of Plant Industry, 

 Circ. No. 27 (1909). 



