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d. . Some of the worst insects which infest the strawberry appear 
the adult stage in swarms during a comparatively short period, 
i may then be entrapped by attracting them by lights exposed in 
fields, and so arranged that the insects approaching the lights 
11 be caught in vessels of water. A glass lantern so suspended 
r a tub of water that beetles flying against the glass will drop 
) the water beneath, is a simple and effective device which may 
depended upon to capture the May beetles and other adults of 
various white grubs., If the water be covered with a film of 
osene, the insects falling into it will be speedily killed. The 
ecial object of this method of warfare is to destroy the adults as 
y emerge, or as they resort to the field to lay their eggs. 
■ e. As a general measure of protection, it is sometimes expedient 
rake and burn the mulch and rubbish late in autumn, after 
ects have resorted to their winter quarters. 
) f. For thousand-legs in the strawberry field, the plan of seat¬ 
ing slices of potatoes or other vegetables between the rows, and 
ing by hand late at night and early in the morning the myria- 
Is attracted to them, has been recommended by good authority. 
g. Thick-stemmed weeds in and about the field should be de- 
iyed if the stalk-borer is likely to be injurious. 
4. Topical Applications. 
t 
: a. For all leaf-eating species occurring in summer after the 
it is inched, except possibly those which feed concealed within 
rolled and curled leaves, sprinkling or spraying with Paris green 
London purple in powder or suspended in water, is a feasible 
aedy. It must be remembered, however, that this method is of 
avail against insects which do not gnaw or bite the tissues of 
■ ; plant. It is recommended to destroy the leaf-eating beetles 
ose young are the strawberry root-worms. For this purpose the 
son should be applied during July and August. It is, of course, 
portant that it should be used no more freely than is absolutely 
3essary to accomplish the end desired. 
L h. Powdered hellebore is used, like the arsenical poisons men- 
aed in the preceding section, for the strawberry false-worm, Em- 
.jtus maculatus. 
1 c. For those species appearing exposed while the fruit is upon 
) plants, as well as for all those which are not provided with 
ing mouths, powdered pyrethrum is one of the most useful appli- 
dons. This may be either dusted upon the plants, due care being 
^en that it shall reach both the under and the upper surfaces of 
) leaves, or it may be thrown in a spray of water from a hand 
ce pump. 
1 d. The kerosene emulsion may be applied for the same pur¬ 
se as the pyrethrum mentioned above, except that it is not avail- 
le during the fruiting season. 
1 e. Applications of sulphur to the leaves, as well as a spray of 
ong soapsuds, are useful for some purposes. 
1 /. For subterranean larvae appearing locally, bi-sulphide of car- 
n or carbolic acid may be poured into small holes made in the 
rand, as recommended on another page under the discussion of 
nedies for the strawberry root-worms. 
