2^ SCIENTIFIC AGRICULTURE September, 1921 



depositing their tiiiy yellowish eggs upon This has to be applied with the greatest 

 the wood of the current season's growth, care so as to cover tlie smallest twig, in 

 chieflv upon the fruit spurs. order to enclose the eggs deposi ed thereon 

 ^ ^ ^ m a firm coat of whitewash. The best re- 

 Injuries Caused by the Insect. suits can only be obtained by making two 



,.„ ,. i; <.K„ ;„uar.t"« uf.rk Mi-e applications, the second as soon as the first 



The chief results or the insect s woik die 1 1 > 



the shrivelling up of the blossoms and the Has ariea 



tiie siuneiuiife ui , . ,i„,,,.T,in<r of If caretullv done this metliod has several 



tunnng yellow and ^^^sequent dioppmg ot ^^^^ r^ ^^^^ ^^^^ .^^^^^^ ^^.^ ^ 



a large ^^7^^'^^^" ^;';^3,^" '^;i,,. '-'^f ed before they have done any damage and 



appeai-s to be no det e J^^^^^ there is not the same danger of spray in- 



the affected parts, "^^^^ , '^^^^.V The dam J^^'^' ^« i« encountered later. On the other 



the work of the green apleJmg^^^^ J^ ^^ ^^^^^^^ ^^^ ^^^^^^^^ disadvantages. It 



age seems to result ^^^^^-^^^^ f ^"\^*^^^ j"^ :^ i, impossible to get on heavy clay land with 

 :l,r^'w^r 'tile.: r ^^:t':it:L the lleavy spra/ outfi. at this time of the 

 tt^ insectl mav be quite numerous with- year. Furthermore, the great care neces- 

 riie insetis ma i ^^ ^^^^^ ^^^ .smallest twigs and the 

 out the damage ^^^'^^^'^^^^ he dam large amount of liquid required to do good 

 there is a "^^^^^^'^ ^,^^\^^\f,f ., .^^^e' Tt , work makes the task quite a formidable 

 age i« proportionates ^^^^^^ f^^^-urv wi one. For those who are able to carry out 

 also altogether ^^^^^^^^J^f .^^^^.^^^^J^^^Vn this method and are willing to take the re- 

 prove to be cumulatne a d increase ni .^ ^^.^^ satisfactory re- 

 tensity from year to >eai. ^^^^^ i 



How to Control. 



1 The method that, up to the present, ACCREDITED HERDS OF ('AXADIAX 



has proved most satisfactory, is to spray UA£^. 



with nicotine sulphate (Blackleaf 40) ^ . , , ^^ , „ , . ,„ . r ^n , 



The stmigth of 4 of a pmt to 100 gals of o22 Herds Undergoing ruberculin 1 est 



water using a pressure of at least 250 En dot Ju l>. 



pounds and ^l;''^^^'^^Z^ Ottawa, Aug. 16. - The accredited herd 



drench the ^"^^V^, V,^ttaZ i e iu t"^ bet^e plan for the elimination of bovine tuber- 



the 'blossom pink stage, i.e. just K^^^.^^ ^^^.^^^ ^^^^ .^.^.^^^^^ .^^ ^^^^ ^,^^.^^^^ 



theblo«or>en ^^^ ^..^^^^ States four years ago and was^started in 



no^'dered tobacco dust or nicotine-sulphur Canada two years later by the Department 



ust containtng two percent or more of of Agriculture, has made remarkable pro- 



B aclleaf 40, aL, destroy a large propor- fess. n this country at the end of July 



i3idtKiedi -iw, a „,-,nlipH at the last, o22 herds were undergoing the tuber- 



tion of the »;«e^ts,^^hen appl ed at the ,^ ^^ ^^^^ ^^^^^^^^ ^^ ^^^^ veterinary of- 



same period, but a e no ^y^^f J^^ ^e as a ^^ ^^^^ ^^^^^^ ^^ ^^^.^^^^^^ ^^^^^^^^ ^^ 



spray properly applied, it dusting is npnprtmpnt New herds are bein" 



.;rHfticed about twice as much material the Depaitment. iNe\\ nereis are Demg 



prdcticeci, doouT \''')l rln^tincr -And placed under test as rapidly as possible, 



v^hould be used as in ordinary ciusting duci i i- .• * 



sriouiu oe u^cLi „,!+,. coroirp -1 but the applications are so numerous as to 



the greatest care employed to secure a \\, x? 4.1 4. p<r * i n 



ine oi«'*'^*^j^/^ /* ^ exceed the power of the staff to handle 



good distribution ot the dust. ^^^^^^^^ 



3. A third method tliat ma>- be em- ^^^"^^^^ ^^^^^ ^^^ ^^^^j^. .^^. .^^y, ^^^^^ ^^^^^ ^.^ 



idoyed if desired is to apply a heavy lime ^^^^^^ ^^^^^ ^^^^^^ ^^^^^ ^^^^^ 3 3^^^ reactors had 



wash to the trees wh^n the buds are swel- ^^^^^^ condemned, the amount of compensa- 



ling, but before they have burst. 1 he best ^.^^^^ allowed reaching $396,464.33. The 



time is when they just begin to snow an .^^.^^..^^.^ ^.,^^t ^^^ ,,.^^.1- p^r herd has been 



indication of green at the tips. 1 his wash jj-yo.l.OO. The extent of the work in the 



is made as follows: Tnited States will bp ai>])reciated when it 



y^-j^^p 100 lbs. is stated that the amount voted by Con- 



o i| 20 lbs. gress this year for compensation and sal- 

 Water ... • 100 gals. aries is five million dollars. 



