14G INSECTICIDES, FUNGICIDES, AND WEED KILLERS. 



mow it prematui'ely and only leave a small strip of lucerne where all 

 the larvae will take refuge ; this strip is then limed. 



Anthonoimis Piri, Boh. (anthonome of the pear) ; A. Pomorum 

 (apple blossom weevil). — Poubelle limes the trees in autumn with a 

 mixture of lime 22-33 lb., flowers of sulphur 22 lb., gelatine 6-6 lb., the 

 whole mixed with water to a thick paste which is spread on the trunks 

 after removing the moss. 



Haltica A7npelophaga, Geur. (altise of the vine). — The green altise 

 which ravages the leaves of the vine may be destroyed by projecting 

 powdered lime on to the vines (Audibert). 



Crioceris Asparagi, L. (asparagus beetle). — Vial advises to dust 

 the asparagus with impalpable slaked lime preferably in the morning 

 dew. 



Melolontha vulgaris, L. — Webster tried to destroy the larvae of the 

 cockchafer in fields by utilizing the heat given off by lime in slaking. 

 Trials made in a field infected with white-worm did not give good 

 results. Kitzema Bos also tried, but without success, to destroy insects 

 injurious to forests, e.g. LopJiynis Pini, L. similis, Trachea pinijjerda, 

 Gaatro pacha Pini, by spreading on the soil of the forests a large 

 amount of quicklime. 



Agriotes Linearis, L. — If lime is not directly injurious to the 

 larvae of this insect spread on the fields, it helps greatly to diminish 

 their numbers. According to Schilling annual liming yields still more 

 complete results. This improvement is due to the transformation 

 effected by the lime on the soil, which after having been wet and 

 charged with humus favourable to the evolution of the larvie becomes 

 drier after liming and unfit for their development. 



Gryllotalpa vulgaris (mole cricket). — In Italy this orthoptera is 

 removed by liming at the rate of 16 cwt. to the acre. 



The larvae of some Hymenoptera are very sensitive to lime. 



Neniatus ventricosus, Kl., N. Bibis, Scop, (the gooseberry and 

 current saw-fly). — Lime in itself forms a good means of destroying 

 their larvae. Firor, however, prefers a mixture of 4 '4 lb. of lime and 

 2-2 lb. of powdered tobacco which he spreads on the shrub after 

 moistening it. 



Selandria [Eriocampia) adumhrata, Kl. (slimy caterpillar, slimy 

 larvae of pear saw-fly). — Lime forms an excellent means of destroying 

 this sticky larva which skeletonizes the leaves of the pear. 



Amongst the Lepidoptera a few may also be combated by lime. 

 The large white garden butterflies are destroyed by dusting freshly 

 :slaked lime on plants and then watering them (Vial). 



Cheimatobia brumata, L. (the winter moth, Evesham moth), Sesia 

 ■mj/opi/ori)iis, Bid. (sesia of the pear), Cirapholita Weberiana, W. V. — 

 The liming of the trunks prevents the females of these butterflies from 

 depositing their eggs. The caterpillars of the last two butterflies may 

 be destroyed by plastering the trees with a thick milk of lime mixed 

 with clay (Taschenberg) and applied at the time the caterpillar is mak- 

 ing its ravages. 



Tingis piri. — This Hoiiiptera has been successfully combated 

 by lime, which ought to be applied as a whitewash in February. 



