148 HORTICULTURAL MANUAL. 



in the hands of the user under the name of "woriny 

 cherries." 



A common habit of all the curculios is, when alarmed, 

 to draw up as if dead and drop to the ground. Advantage 

 is taken of this habit in the way of jarring the tree, caus- 

 ing the dropping of the insects on sheets spread beneath 

 during the first stages of fruit development. In the larger 

 fruit sections an inverted umbrella-like frame covered with 

 cotton cloth, divided in the centre so as to pass the stem, 

 is rolled on low wheels under the trees for the reception 

 of the curculios. The morning and evening are found to 

 be the most favorable periods for this work. In some of 

 the largest commercial stone-fruit orchards of New York, 

 Ohio, and Georgia this plan keeps the curculio in check 

 with less trouble and expense, it is claimed, than can be 

 done by spraying. 



But spraying is relied on by other growers of the cherry, 

 plum, and peach. The trees are sprayed, just as the buds 

 begin to expand, with arsenite of lime solution (156). 

 This reaches some of the adult insects under bark scales, 

 and many are on hand to feed on the first opening leaf and 

 fruit buds. The second spraying with the same mixture 

 should be given soon after the blossoms have fallen. If 

 rains follow a third spraying may be required. 



In spraying with the arsenite of lime for codling-moth 

 and curculio we are also waging a successful warfare on 

 the canker-worm, tent -caterpillar, bud-moth, and about 

 all leaf- or bud-eating insects. 



158. Spraying for the Bark and Leaf Aphis. 



Kerosene Emulsion. The scale insects, plant-lice, and 

 the true bugs (Ileteroptera) that suck their food from the 

 leaves or young growth of plants and trees cannot be con- 

 trolled by spraying with the arsenites or other poisons used 

 for the bud- and leaf-eating insects. The leading remedies 



