256 THE SPRA YING OF FRUITS. 



every few days if necessary). Everything depends upon 

 being on time. Sticky bands or straps placed around the 

 trunks of the trees are effective in keeping the female moths 

 from ascending. Bud-moth. i, As soon as leaf-tips appear in 

 buds, arsenites ; 2, repeat i before the blossom-buds open ; 

 (3, repeat 2 when blossoms have fallen). Codlin-moth. i, 

 Arsenites immediately after blossoms have fallen ; 2, repeat 

 i, seven to ten days later; (3, 4, arsenites at intervals of one 

 to three weeks, after 2 especially, if later broods are trouble- 

 some). Arsenites may be added to the Bordeaux mixture 

 and the two applied together with excellent effect. Two 

 sprayings are commonly sufficient for the codlin-moth larva. 

 Case-bearer. As for bud-moth. 



PEAR Leaf -blight or Fruit-spot. i, Just before blossoms 

 open, Bordeaux mixture ; 2, after fruit has set, repeat i ; 3, 

 the same two weeks later. If further applications are neces- 

 sary, use copper sulphate or ammoniacal carbonate of copper. 

 Leaf -blister. i, Before buds swell in spring, kerosene emul- 

 sion, diluted five to seven times. Psylla. i, When first 

 leaves have unfolded in spring, kerosene and water, 5-10 per 

 cent.; 2, 3, etc., at intervals of two to six days repeat i until 

 the insects are destroyed. Slug. Treat the same as for 

 cherry slug. Codlin-moth. Treat the same as for apple. 



The true pear-blight (or fire blight) cannot be controlled by 

 spraying, so far as known. This disease is distinguished by 

 the uniform dying of the entire leaf, and the leaves hang upon 

 the tree. The leaf-blight, mentioned in the last paragraph' 

 causes the leaves to become spotted and to fall. 



PLUM Brown-rot. As for peach, which see. Leaf-blight. 

 i, Copper-sulphate solution, before buds swell; 2, When 

 fruit has set, Bordeaux mixture; 3, 4, etc., repeat 2 at in- 

 tervals of two or three weeks; use a clear fungicide after 

 fruit is three-quarters grown. Black-knot. i, During first 

 warm days of early spring, Bordeaux mixture; 2, repeat i 

 when buds are swelling; 3, during latter part of May, repeat 

 i; 4, repeat i during middle of June; (5, repeat i in July). 

 All knots should be cut out and burned as soon as discovered. 

 Curculio. Spraying is not always satisfactory; jar the trees 

 after fruit has set, at intervals of one to three days during 

 two to five weeks. Plum Scale. i, In autumn when leave? 



