52 



keeping them away. It should be replaced as fast as new leaves appear. 

 In controlling these beetles on large fields of squash the best practice is 

 perhaps to keep the main crop well covered with poisoned Bordeaux, and 

 to reserve here and there, mainly about the edges of the field, a few plants 

 to act as traps; these trap plants should be kept well covered with lead 

 arsenate. Any fine dust, sifted ashes, lime or road dust, applied when the 

 plants are wet, will drive the beetles away for a time. Many growers keep 

 each young plant covered with cheese cloth until the first brood of beetles 

 has disappeared (second week in July at Ste. Anne's in 1909), or have 

 moveable cheese-cloth frames which will cover a number of plants. 



The Colorado Potato Beetle exacted its customary tribute. Lead 

 arsenate, 3 lbs. to the barrel, has proved most satisfactory here. Experi- 

 ments carried on by Prof. Blair seemed to show that better results are ob- 

 tained by applying this amount in two applications. Spray 1^ lbs. lead 



The potato beetle; a, eggs; b, grubs; c, pupa; d, adult. (Copied). 



arsenate to the barrel and repeat with the same as soon as the first is dry. 

 The beetles and egg-masses should be hand-picked early in the season, until 

 the plants have enough leaf -surface to carry considerable poison. 



Cut-worms were more than usually destructive. Young carrots, beets 

 and turnips sufi^ered most severely. When taken in time cut-worms are, as 

 a rule, easily controlled with poisoned bran mash scattered in the evening 

 about the base of the plants. In our experience the dry bran is not eaten 

 by the worms, hence it should be well moistened and applied late in the 

 day. Cut-worms are stout, cylindric, usually earth-coloured caterpillars, 

 larvae of Noctuid Moths. They remain hidden below the surface during 



