40 MAINE AGRICULTURAL EXPERIMENT STATION. I91I. 



allowed to settle. The clear liquid was then drawn off and 

 diluted to make a barrel full before using. In 1885 Wm. 

 Saunders* also recommended for pear blight a self-boiled lime 

 and sulphur wash consisting of 8 pounds sulphur and one-half 

 bushel of lime with boiling water, the mixture to be applied as 

 a whitewash with brushes, and for mildews he advised appli- 

 cations of the clear sulphur liquid drawn off from this wash 

 and greatly diluted."** This was the forerunner of Mr. W. M. 

 Scott's now well known "self boiled" lime sufphur preparations. 



In spraying peach trees in the Pacific Coast States with boiled 

 lime sulphur solutions for the control of the San Jose scale it 

 was found that this insecticide also served in some way as a 

 fungicide, in that a winter application acted successfully as a 

 preventative of peach leaf curl (Bxoascus deformans (Berk.) 

 Fuckel) the following spring. Possibly it was this fact that 

 furnished a hint of the availability of lime-sulphur solutions 

 for other fungous parasites. 



Experiments at the New York (Geneva) Station in 19027 

 developed the fact that lime-sulphur applied in early spring for 

 the control of San Jose scale had an apparent fungicidal effect 

 in controlling apple scab. {Vcnturia Pomi (Fr.) Wint.) Later 

 work at this station also took into account the fungicidal value 

 of the early lime-sulphur application as a substitute for the first 

 bordeaux-arsenical spraying. $ As this application was made 

 before foliage developed it gave no indication of the value of 

 the sulphur solutions for summer use. Summer spraying at 

 a strength sufficient to control San Jose scale on Japan plums 

 was injurious to the trees. 



Experiments in making a lime-sulphur wash without boiling 

 were reported without data as to trials. § 



*Report of the U. S. Commissioner of Agriculture, 1885, pp. 43-44. 



**Scott, W. M. "Self Boiled Lime Sulphur Mixture as a Promising 

 Fungicide." U. S. D. A., Bureau of Plant Industry Circular i, (1908). 



tLowe, V. H. and Parrott, P. J., "San Jose Scale Investigations IV. 

 Part I." N. Y. Agric. Expt. Sta. Bui. 228 (1902), pp. 405-407. 



IParrott, P. J., Beach, S. A. and Woodworth, H. O. "The Lime- 

 Sulphur-Soda Wash for Orchard Treatment." N. Y. Agric. Expt. Sta., 

 Bull. 247, (1904). 



Parrott, P. J., Beach, S. A. and Sirrine, F. A. "Sulphur Washes for 

 Orchard Treatment." N. Y. Agric. Expt. Sta. Bull. 262, (1905). 



§Lowe, V. H. and Parrott, P. J. loc. cif. Part III. 



