122 EXPERIMENTAL FARMS. 



64 VICTORIA, A. 1901 



As large a proportion of scales appear to have been removed by the thinnest washes 

 in this experiment as by the thickest. It would seem, from some of the results 

 obtained, that the thicker and stickier mixtures had the effect of glueing the scales to 

 the trees, thus counter-balancing in a greater or less degree the action of the lime in 

 loosening them. In all cases, many scales were removed from the trees, but a few 

 were so badly affected that they were still badly affected after being sprayed. 



EXPERIMENT TO DETERMINE IF THERE WOULD BE ANY INJURY TO THE TREE 

 FROM LIME IF APPLIED WHEN BUDS WERE BURSTING. 



As it was not known whether the lime would have any injurious effects on the 

 young growth of the trees (no injury having been observed when the trees were 

 sprayed when dormant), the following experiment was made:— 



An apple tree which was considerably infested with bark-louse, was chosen for 

 this purpose. The formula used for the first spraying was 2 pounds lime, 1 gallon 

 water, 1 quart skim-milk, 5 ounces salt; and for the second spraying the same, 

 without the salt. At the time of the second spraying the leaf buds were bursting. 

 The lime covered the young leaves, which were just showing, and no injury resulted. 

 The tree bloomed freely, and there evidently had been no injury to the flower buds. 

 The young lice began running at the usual time. 



EXPERIMENT TO DETERMINE THE EFECT OF A LIME MIXTURE ON THE SAN JOSE 



AND NEW YORK SCALES. 



An experiment was tried at Niagara in December, 1899, to determine if a lime 

 mixture sprayed on peach trees would have any effect on the San Jose scale. Ten 

 trees were used, all of which were more or less infested with it. 



Three trees received one application ; two trees, two applications ; two trees, 

 three applications; and three trees, four applications. The various sprayings were 

 made between December 21, 1899, and January 4, 1900. The formula used was 60 

 pounds lime, 10 pounds salt, 6 gallons skim-milk, and from 28 to 30 gallons water. 

 A very thick and strong mixture. 



The trees were examined on June 21, 1900, but no injury to the scales could be 

 detected. 



T^our plum trees which were infested with the i^ew York scale were sprayed on 

 December 21, 1899, with the same mixture. Two trees received one application and 

 two, two applications. These trees were also examined on June 21, 1900, but the lime 

 had evidently not had any effect on this insect either. 



No injury was caused to either the plum or peach treesi by the use of the lime 

 mixture. 



EXPERIMENTS IN PROGRESS. 



Experiments are in progress this winter to determine, if possible, the most econ- 

 omical and satisfactory formula to use in spraying to eradicate the oyster-shell bark- 

 louse. 



HOW TO MAKE AND APPLY THE LIME MIXTURE. 



Only good stone lime should be used. The lime is slaked in warm water, stirring 

 it so that it will slake well, and the remainder of the water is then added, and the who'e 

 thoroughly stirred. It is then strained through a sieve having a mosh about one-twclt'th 

 inch in diameter, and is ready for use. A mild day should be chosen, so that the mix- 

 ture may have a chance to flow about the scales without freezing. It. is more satisfac- 

 tory to apply the mixture while it is yet warm. A less strength than 2 pounds of lime 

 to 1 gallon of water can be sprayed through a largo barrel pump without danger of 

 clogging, but if 2 pounds or more to 1 gallon is used it is necessary to use a smaller 

 pump so that it may be cleaned easier should it clog. 



