THE SPRAYING OF FRUITS. 257 



have fallen, 25 per cent, kerosene and water mixture; 2 and 3, 

 in spring, before buds open, repeat i. 



PEACH Brown-rot. i, Before buds swell, copper-sulphate 

 solution ; (2, before flowers open, Bordeaux mixture) ; 3, when 

 fruit has set, repeat 2 ; 4, repeat after ten to fourteen days ; 

 5, when fruit is nearly grown, amoniacal copper carbonate; 6, 

 7, etc., repeat 5 at intervals of five to seven days if necessary. 

 Curculio. See Plum. 



CHERRY Black-knot. As for plum. Rot. i, As for plum. 

 Aphis. i, 10 per cent, kerosene and water when insects first 

 appear; 2, 3, repeat at intervals of three to four days if neces- 

 sary. It is essential to be on time with this treatment. Slug. 

 i, When insects appear, arsenites, hellebore or air-slaked 

 lime; 2, 3, repeat i in ten to fourteen days if necessary. 

 Curculio. See Plum. 



QUINCE Leaf -blight or Fruit-spot. i , See under Pear. Rust. 

 Same treatment as for leaf-blight. Curculio. See under 

 Plum. 



ROSE-CHAFER or ROSE-BUG. A very difficult insect to com- 

 bat. There is no good remedy. Spraying thick lime white- 

 wash on the plants is a fairly good repellant. Kerosene emul- 

 sion is also partially efficient. Hand-picking and bagging the 

 fruit, where these means can be employed, are always to be 

 recommended. The insects breed in sandy lands. These 

 breeding places should be kept in constant tilth, and never 

 seeded down. 



SAN JOSE SCALE. For nurserymen with infested stock, fumi- 

 gation with hydrocyanic-acid gas; for those with infested 

 growing trees, a crude oil and water mixture from 60 to 80 per 

 cent. , dependent upon the specific gravity of the oil. Details 

 on the methods of application may be obtained from many 

 experiment station bulletins. Whale-oil soap and kerosene 

 emulsion are no longer practicable remedies, because they 

 are so costly and disagreeable to apply. Resin washes are 

 used with success in California. 



2. The Vineyard. 



Anthracnose. i, Before buds break in spring, sulphate of 

 Von and sulphuric-acid solution ; 2, repeat i after three or 

 17 



