66 THE REPORT OF THE No. 10 



can certainly be obtained with many kinds of plants. Careful handling in taking down and storing 

 away the cheese cloth and framework would ensure the lasting of these for at least two or three 

 years. Such enclosures are manifestly unsuitable for the cultivation of plants like egg-plants 

 and cucurbits, which need the intervention of insects for the fertilization of the flowers. 



The Carrot Rust-liy (P.'iila rusie, Fab.) is merely an intermittent enemy of the carrot in 

 Ontario. It occasionally appears and does a considerable amount of injury, particularly to red 

 carrots. In the Maritime Provinces, where it seems to find conditions better suited to its 

 development and where these are certainly more like those in its Jl^^'opean home, the Carrot 

 Rust-fly is a regularly occurring enemy of the carrot. During the past summer I was surprised 

 to find at Ottawa the same insect attacking the roots of Celeriac, or Turnip-rooted Celery. Dr. 

 E. P. Felt, State Entomologist of New York, also records a similar injury to celery in his 

 report for 1902. The galleries in the roots of the celery are marked with the same bright rusty 

 red colour which is noticeable on carrots. Strange to say, this year carrots grown in a bed 

 almost adjoining the Celeriac showed no trace of injury ; but it should be stated that these 

 carrots were sown very late in the season, not until July, which may have had some bearing 

 on the case ; for it has been noticed by several growers that, when carrots are sown late, the 

 injury is much less, even in districts where the Rust-fly is abundant. This insect passes the 

 winter in the puparium, which is formed in the earth around the roots, or in the sand in which 

 they are stored for winter. The adult flies emerge the following spring and lay their eggs at 

 the roots of young cari-ots, frequently, as was observed by Miss Ormerod, creeping down be- 

 neath the surface wherever any crevices occur. The first appearance of attack is on the outside 

 of the young roots, and more often towards the tip than higher up. At the same time some of 

 the leaves of the carrot turn purple, which is also an indication of injury, and such plants 

 should be pulled out as soon as noticed. When carrots are harvested at the end of the season, 

 the injuries by the ma-j'gots are frequently inconspicuous, although the root may be honey- 

 combed in every direction as will be seen when it is cut for cooking. When carrots are grown 

 for table use, they are rendered worthless on account of the discolored tunnels which traverse 

 the root in every direction. The remedies for this insect are sowing in new ground, sowing 

 late, and the protection of growing plants with deterrent applications, such as kerosene emul- 

 sion, one part to ten of water, or a carbolic wash, such as the Cook wash mentioned above 

 under Radish Maggot, to be sprayed along the rows immediately after hoeing or thinning out ; or 

 the dusting of sand, land plaster, or ashes, which have been saturated with kerosene at the 

 rate of half a pint to three gallons, may be practised instead. The liquid washes, however, are 

 rather better, because they wash soil around the roots again, and fill up all crevices which may 

 have been made when thinning out, and into which the females might creep to lay their eggs. 

 When carrots or celery have been stored in earth or sand, this should be carefully buried in a 

 deep hole, so that the flies on hatching may be prevented from getting out. 



Owing to the wet autumn, injuries from Slugs and Millepedes have been more frequent 

 than usual. These are not insects, but advice concerning them is usually asked from entomo- 

 logists. For Slugs light top-dressings of salt or fresh lime at short intervals are very useful. 

 For Millepedes applications of nitrate of soda have proved effective — at the same time this 

 salt is an exceedingly valuable and quick-acting fertilizer for all vegetation. 



The Asparagus Beetles (Grioceris asparagi, L., and C. IS-punctata, L.) have continued to 

 do some damage in the Niagara district ^nd have also evidently increased their area of infesta- 

 tion. In last year's report Mr. Mofltat recorded the 12-spotted Asparagus Beetle as haying 

 occurred abun dantly at London, Ont. During the past summer the common Asparagus Beetle 

 (Fig. 25) was found much further east than it has been found before. Mr. J. Macnamara 

 sent in specimens from Bracondale, close to Toronto ; so, there is a probability, as asparagus is ' 



