CIHM Microfiche Series (IMonograplis) ICMH Collection de microfiches (monographles) Canadian Inttituta for Histcrical Microraproductions / institut Canadian da microraproductiona historiquaa Technical and Bibliographic Notes / Notes techniques et bibliographiques The Institute has attempted to obtain the iiest original copy available for filming. Features of this copy which may be bibliographicaliy unique, which may alter any of the images in the reproduction, or which may significantly change the usual method of filming are checlced below. □ Coloured covers / Couverture de couleur □ Covers damaged / Couverture endommagde □ Covers restored and/or laminated / Couverture restaurte et/ou pelliculte Cover title missing / Le titre de couverture manque I Coloured maps / Cartes g^raphiques en couleur □ Coloured ink (i.e. other than blue or blacl() / Encre de couleur (i.e. autre que bleue ou noire) □ Coloured plates and/or illustrations / Planches et/ou illustrations en couleur I I Bound with other material / D D D D Reli6 avec d'autres documents Only edition available / Seule Edition disponible Tight binding may cause shadows or distortion along interior margin / La reliure serrte peut causer de i'ombre ou de la distorsion le long de la marge intdrieure. Blanl( leaves added during restorations may appear within the text. Whenever possible, these have been omitted from filming / II se peut que certaines pages blanches ajoutdes lors d'une restauration apparaissent dans le texte, mais, lorsque cela 6tait possible, ces pages n'ont pas 6\6 filmdes. Additional comments / Commentaires suppldmentaires: L'Institut a microfilm^ le meilleur exemplaire qu'il lul a 6t6 possible de se procurer. Les d^ils de cet exem- plaire qui sont peut-«tre uniques du point de vue bibli- ographique, qui peuvent modifier une image reproduite. ou qui peuvent exiger une nrKidificatlon dans la m«tho- de nonnale de filmage sont indiqute ci-dea^wus. I I Coloured pages/ Pages de couleur I I Pages damaged/ Pages endommagtes □ Pages restored and/or laminated / Pages restaur^es et/ou pelliculdes ^1 Pages discoloured, stained or foxed / Pages dteoior^es. tachet^es ou piqutes Pages detached / Pages ddtach^es Showthrough / Transparence Quality of print varies / Quality inhale de I'impression Includes supplementary material / Comprend du materiel suppldmentaire Pages wholly or partially obscured by errata slips, tissues, etc., have been refilmed to ensure the best possible image / Les pages totalement ou partiellement obscurcies par un feuillet d'errata, une pelure, etc., ont H6 filmtes ^ nouveau de fa^on k obtenir la meilleure inr«ge possible. Opposing pages with varying colouration or discolourations are filmed twice to ensure the best possible image / Les pages s'opposant ayant des colorations variables ou des ddcoiorations sont filmtes deux fois afin d'obtenir la meilleure image possible. D D n This HMn ■• fHimd at Mm raduetign ratio ctMctod below / Co doeumwit ««t fllin* au taux do rMiMtion ImSqu* d-dusous. lOx 14x 18x 12x 16x 20x 22x 7 26x 30x 24x 28x 32x Ttw eopv filiiMd h«r« hM bMn raproduoad thank* to tha ganaroahy of: Ubiwy AfrtwHun Camdi Tha imagaa appaaring hara ara tha baat quality poaalbia conaMaring tha condition and iaglbillty of tha original copy and In kaaping with tha filming contract spacificattona. Original eopiaa in printad papar covara ara fllmad baginning with tha front eovar and anding on tha last paga with a printad or llluatratad impraa- tion, or tha back covar whan approprlata. All othar original eopiaa ara fllmad baginning on tha first paga with a printad or llluatratad impraa* sion. and anding on tha laat paga with a printad or llluatratad imprassion. Tha laat racordad frama on aach microficha shall contain tha symbol ^^- (moaning "CON- TINUED"), or tha symbol ▼ (moaning "END"), whichavar appiias. IMaps. piatas. charts, ate. may ba fllmad at diffarant raduction ratios. Thosa too iarga to ba antiraly inciudad in ona axposura ara fllmad baginning in tha uppar laft hand corner, laft to right and top to bottom, as many framas as raquirad. Tha following diagrama illustrata tha mathod: 1 2 3 1 2 4 5 L'mwnplaira fllmA f ut raprodult grie* i la g«n4rMiti da: Aflriwltura CanMh Laa imagaa auivantaa ont *t4 raproduitaa avac la ' pitia grand aoin, compta tanu da la condition at da la nattat* da I'axamplalra film*, at an con'ormM avac laa eonditlona du contrat da fllmaga. Laa axamplalraa originaux dont la eouvartura an papiar aat imprimte aont filmte an commanfant par la pramlar plat at an tarminant soit par la darnlAra paga qui comporta una ampralnta d'Impraaalon ou d'llluatration, soit par la sacond plat, aalon la cas. Tous laa autras axamplalraa originaux aont fllmia an commanpant par la pramMra paga qui comporta una ampralnta d'Impraaalon ou d'illustratlon at an tarminant par la darnMra paga qui comporta una talla ampralnta. Un daa symboiaa suivants apparaltra sur la darnl4ra Imaga da chaqua microflcha, salon la cas: la symbola — »• signifia "A SUIVRE". la symbola ▼ signlfia "FIN". Las cartas, planchas. tablaaux. ate, pauvant itra fllmte k das taux da reduction difftrants. Lorsqua la documant ast trop grand pour itra raproduit an un saul cllchA, il ast film* i partir da I'angla 8up*riaur gaucha. da gaucha i droita, at da haut an iMs, an pranant la nombra d'imagas n*cassalra. Las diagrammas suivants illustrant la m*thoda. 2 3 5 6 MKMCOPV mOUniON TBT OUtT (ANSI and >SO TEST CHART No. 3) A /APPLIED IM^GE I 1653 Eoit Main Strett Roch«t«r. Hmm York 1*609 USA {71«) 482 - 0300 - Phon. (718) 2M- 5989 -Foil CANAPA. DBF %JIT1IEVT or AOmiCTULTURE mOMOLOOICAL S&AVCH. C. (JoBDON Hbwitt, Dominion Kntomumhiht. Crop Protrelion Leaflet No. ^. Root Maggots and Their Control. In aprinflT, when cabbagea and cauliflowers are net out, or when radishpH, onions, beans, and other plants appear above the soil, small flies, somowiiat reseniblinn the common house-fly but rather smaller and more slender, may \tc i»«on flyinjr nlKiut close to the ground, depositing small, white, elongated egtfs on the «tem» of the plants or adjacent thereto. These eggs hatch in a few days, and the small white miiggots at once burrow down and destroy the roots. In the caae of the Cabbage Root Maggot (Phorbia hratsicm Bouchfe) there are three or four generations during the season. The Importet! Onion Maggot (Hylemyia aniiqua Mg.) also has several generations, and injury by these species may continue from May until autumn. The chief damage is effected in May and during June. The latter species, so far as we know, only attacks onion plants. Injury by the Seed-corn Maggot (Phorhia fuseiceps Zett.) is largely confined to the seedlings of such plants as corn, beans, and peas. The annual loss caused by these insects in Canada amounts to many thousands of dollars. I>'ft hud pl»nt-ShowinB nropwiy plsoed (liac. Right hand plant -C»relei«ly placed diac. (Original). • By Arthur Gibson, Chief AsaUtant EntomoU;, , in chargr of Field Crop Insect Investl- gatlona. 36777 632.704 C212 MEANS OFCONTROLIJNM! ROOT MAOOoTS. Tht Cabb«ffe Boot Xavffot. Onf-fily Tarred FAt Papier />«(*.—( '«l>l>a(jc>i hikI caiiliflowrrs inuy U- pnitpftM! from injury by placiiiK bmuihI the Hti'iii* of <'iiih at tin- tiiiii- tln-y aro planted out, a dim". hoxaKoiial or itqu«rt> in itha|N'. mail*- of oin-ply tarnnl felt painr. A t illuatratpd can be made by any px|)ert blaekHinith. The hladex of the tool are made of steel bent in the form of a half hexafion and then takinK an aeute anKlc reach nearly to the eentre. The port makiuK the iitar-iiha|N'd eut '\* fcrnM-d from a separate pieee of xteel xo attaehed to the handle aw to make a elo«e joint with the blade. The dotted line^ shown at r indieat(> how the tool is \ised. The edge of the tarred felt paper should firtit be cut by uainfi one edne of the tool. By thus plae- iuK tlie tool where the dotted lines are shown and striking the handle with a hammer, or wtrnden mallet, a complete hexaiional disc is cut out similar to that shown at B. One yaril of tarred felt paper is sufficient to make about 2(K) discs, each of which is 2^ inches in diameter. Some irrowers use a siiuiirc d'sc. For gardens requir- ing only a few discs, these could be easily cut out with a sharp knife. The square discs should Im' 2J inches b.v 2i inches, with a slit running from one side to about a quarter of an inch beyond the centre and a cross cut made at the centre extend- ing one-quarter of an inch on either side. It is -mportant tliat the discs be placed around the stems of cabbages and cauliflowers immediately they arc set out. In plac- ing the disc, one side is raised suffit'iently to allow the part« of the star at the end of the slit to i>oint upwards and thus fit close to the stem. The whole disc is then presse*! down firmly so that it will rest evenly on the ground. Innerih-idi'K. — In small gardens, radislM>s ma.v l)e largely protecti-d b.v watering them, using an ordinary watering can with a small spout, once a week until they are ready for the table, with a decoction of fresii pyretlirum insect powder, or white helle- bore, 2 ouiict-s to each gallon of water, the first application to be made when the plants appear above the ground. I'mler acre or field conditions, the expense of such insecti- cides is prohibitive. In districts where turnips fre'ii turniiif an- Krown- !*" ' d-lH-tU nmy bi? ppitepted from iufeotatioii l>.v veriii|f thriii with clitfM-i-lotli friiiiH'» «<• pn-Vfiit the flien from miiiinir ni'«tt»>. to th«' plaiitu t<> di'inwit tlifir wtt". H.v »u thr iM'rtiiaiiiiit HfUi. In orilfr to lianli-n cabbaK"* "i"! <'«uliflow<>r« im-wn in m-r««i'in'«l m'<'«l-lMtl.<. tin- wri-i'iix ithoiili) In> miiovwl almut II wtik or ttii dn.vs Wforc triiii«|>lMiitiii({. Cu/(ural Control.— A* thi» mamroti* an- pw-m'nt tliMUKlmut the irmwii« M>aion, it \» advinaliU' to iiiiiaiiti> of i-pup*. -mli ii» tin- Ktuiiips of i-uli- liiiKti* and faulirtowi-rf.. Tlu- viilui- of KrowiiiK it>|h in ditTcnnt situatioim cadi y«'ar ix. of courw. undoubtfd. Crop rotation »lioiild thi-n-fori- iw priutiMtl. in which *urh iilxive-mentioneil croiw an- followc*! by plantx othj-r than thorn- of the i'ul>bB«f or niu*- tiini family. The Imported Onion Maggot. Poi*oned liait upra i/.—Kei-cnt i-xix'rimi'ntM have shown that tin- flies i>f the Onion MilKBot an- rciulily nttraottil to a iKiiitoiiHl bait »priiy niadt- a* follow*: — Sodium araenitr i ounce. Cheap molasHCH ' P'"*' Boilinit water 1 KftHou. The Hodiuni ars^nite i* first dissolved in the IniilinK water, and the molaH»es then added. When the mixture has eooled it may be applied from an ordinary wateriiiK can. with a small rose. The idea is to de|)<>sit the i)oi»oned solution on the RrowiiiR crop in the form of eoarse droiw. Acre plots of onions may l>e treated qiiiekly by the ojjcrator beffinninK at one end of the plot and walkiuK diagonally aerosH the erop baek and forward in a V-shai)ed manner, the strijH beiiift about 1.") or 2(> feet apart at the wide end. The first applieation should be made when the plants are about three or four inches hiffh, and four or five further applications u'-de about a week apart, choosiuK bright, calm days, sas. The iniis)rtant ))reventivcs, we think, would be to sow vigorous sei-ds not dcelKT than one or two inches, in (food season and in well-prepared soil. When seed is planted during a |)eriod of cold and damp weather, decay, of course, is liable to set in and the <'onditioiis jxissibly rendered more attrac- tive to the adult flies for egg-deiKtsition. As it is known that soil In which barn- ipp" TW t ni u ni Miggai yard manurf has been ui«d •• a f«srtiUaer i» iiarttcularljr »ubj«rt to attack, it U adriwUe to avoid th«> wr nf »twh irftttitmr a* munh an piiaaihkt in ik>M« in diatrirta infwtad witli the inaeot We thai] be pleanod (n hear from nny one ooncerning damage <>r trouble of any kind due to inMHH pMtn. No pontage ii required on nueh letten of inouiry when ttddreaaed-- Dominion KntomologUt, Pfpartm^nt of AgrieullHrf, Ottawa. Ont. Such inquiripd should bo accompanied, in all caw where it i« powible, by specimen* of the inioGta. The 'niecti should bo sent paclctni with their food plant in a strong wooden or tin box to prevent loss in transit. Packages up tn 12 ounceti in weight may be mailed free, and every package should bear or contain the sender's name and address, and be accompanied by a letter. Ottawa, Februr.ry 2o, 191». Publlshad by authority of Hon. T. A. Crsrar, Ministsr of Agrlcultura, Ottawa, Ont.