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iiiiseil)le oils have both proven themselves efficient for the 

 control of San Jose scale. We generally prefer the lime- 

 sulfur in preference to the oil for apples on account of its 

 comparative low cost, while we always recommend the use 

 of lime-sulfur in preference to oil for peaches, not only on 

 account of the high cost of the oil, but also because of the 

 efficiency of the lime-sulfur in controlling peach leaf curl. 

 For apple orchards that are very badly infested with San 

 flose scale we sometimes recommend an application of oil in 

 the late fall, followed bj^ an application of lime-sulfur in the 

 spring. For such insects as red-bugs, plant lice and lea! 

 hoppers, we are using a combination of whale-oil soap and 

 black leaf 40 at the rate of 4 pounds of soap and one pint of 

 black-leaf to 100 gallons of spray mixture. The soap in 

 this combination, although of some value as an insecticide is 

 primarily added as a spreader for the black-leaf. The main 

 objection to black-leaf 40 and similar materials is its high 

 cost, but so far we have been unable to find a substitute that 

 is cheaper and at the same time practical and efficient. A 

 recent report on investigational work along this line con- 

 ducted by the Virginia Agricultural Experiment Station 

 indicates that a practical method may be developed whereby 

 fruit growers will be able to prepare nicotine decoctions of 

 uniform strength from tobacco stems, and sweeping. IIow- 

 ever, it seems doubtful if such a method will ever be practi- 

 cal except for those fruit growers who ai'e able to buy 

 tobacco stems or sweepings at a very low figure. 



Among the fungicides mentioned a few in omen ts ago, 

 concentrated lime-sulfur (commercial and home-made) is 

 now the most popular material in New Jersey for apples, and 

 for the dormant spring spraying of the peach, while self- 

 boiled lime-sulfur is by all means the most common fungi- 

 cide in use for summer spraying the peach. A few of our 

 ]>each growers are using very dilute concentrated lime-sul- 

 fur as a summer spray for the peach, but we do not 

 recommend it on account of the great liability of its causing 

 serious Inirning of the foliage. Bordeaux mixture is still 



