CIHM Microfiche Series ({Monographs) ICIMH Collection de microfiches (monographies) Canadian Inttituta for Historical Microraproductions / Institut Canadian da microraproductions historiq uas Technical and Bibliographic Notes / Notes techniques et bibliographiques :6 ■=■# m ^ The Institute has attempted to obtain the best original copy available for filming. Features of this copy which may be bibliographically unique, which may alter any of the images in the reproduction, or which may significantly change the usual method of filming are checked below. D Coloured covers / Couverture de couleur I I Covers damaged / □ D D n 2] n n Couverture endommag^e Covers restored and/or laminated / Couverture restaur^e et/ou pelliculSe Cover title missing / Le titre de couverture manque Coloured maps / Cartes g^ographiques en couleur Coloured ink (i.e. other than blue or black) / Encre de couleur (I.e. autre que bleue ou noire) Coloured plates and/or illustrations / Planches et/ou illustrations en couleur Bound with other material / Reli^ avep d'autres documents Only edition available / Seule Edition disponible Tight binding may cause shadows or distortion along interior margin / La reliure serr^e peut causer de I'ombre ou de la distorsion le long de la marge int^rieure. Blank leaves added during restorations may appear within the text. 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ThI* item ti (ilmtd at tht rtduclion ratio chtcktd btlow / C« documtnt ttt tilml au taux d« reduction Indiqut cl-dtiseui. lOx 14x IBx 22x 26x 30x ^ 12x 16x 20x 24x 28x 32x The copy filmed here has been reproduced thanks to the generosity of: Library Agriculture Canada The images appearing here are the best quality possible considering the condition and legibility of the original copy and in keeping with the filming contract specifications. Original copies in printed paper covers are filmed beginning with the front cover and ending on the last page with a printed or illustrated impres- sion, or the back cover when appropriate. All other original copies are filmed beginning on the first page with a printed or illustrated impres- sion, and ending on the last page with a printed or illustrated Impression. The last recorded frame on each microfiche shall contain the symbol •^ (meaning "CON- TINUED"), or the symbol V (meaning "END"), whichever applies. Maps, plates, charts, etc., may be filmed at different reduction ratios. Those too large to be entirely included In one exposure are filmed beginning in the upper left hand corner, left to right and top to bottom, as many frames as required. The following diagrams illustrate the method: 1 2 3 L'exemplaire filmt fut reproduit grfice i la giniros'ni de: Bibliothique Agriculturt Canada Las imagas tuivantas ont iti raproduitas avac la plus grand soin. compta tanu da la condition at da la nattatd da I'axamplaira fllm«, at an conformity avac las conditions du contrat da filmaga. Le» axamplairas originaux dont la couvartura an papiar ast imprimia sont film«s an commandant par la pramiar plat at an tarminant soit par la darnlAra paga qui comporta una amprainta d'imprassion ou d'illustration, soit par la sacond plat, salon la cas. Tous las autras axamplairas originaux sont filmsignifia "A SUIVRE", la symbola V signifia "FIN". Las cartas, planchas, tablaaux, ate, pauvant ttra filmte i das taux da riduction difftranta. Lorsqua la documant ast trop grand pour 4tra raproduit •n un saul clich4, 11 ast film* « partir da I'angia sup«riaur gaucha, da gaucha k droite, at da haut ^n bas, an pranant la nombre d'Imagaa n4cassalra. Las diagrammas suivants illustrant la m^thoda. 2 3 5 6 Miaiocorv risoujtion test chart (ANSI and ISO TEST CHART No 2) /APPLIED IIVMG E Inc If';^ i JSl Mam SIfMl EXHIBITION CrRCTTLAB No. 24. DOMIXTOX OF PANADA. DEPARTMENT OF AGRK (TTFRE. EXPERIMENTAL FARMS. DIVISION or BOTANY. J. H. GRISDALE, B.Agr.. Director. H. T. GiJSSOW, Dominion Botmnitt. SEED TREATMENT FOR GRAIN SMUT. BY H. T. Ql'ssow. I.OST $12,000,000 Every yew- by the grain growers of Manitoba, Saskatchewan and Alberta fr«», smnt diMiase. alTecting their grain. How inch smut did y^nrtictS vZ gram? How much is your share of this 1i>«i.7 nL'l ^L Vu ^*" J-eat your grain before^owing*"I;^tt w^V .^„T UrVe"-tLr"^ ^ More ,„ the next-hence don't omit treatment. Thil'wTexS C Bluestonr solutim.-^ Lis. crmmercial blueatone to 50 Imn ...11..,- <■ Bluestone crystals dis«,lve rondily by tyin^ th. required qua ti^'v t; vT •nd suspending it ever night in a wooden barrel hold 7^ 50 " l" ' ; " """" ^'^ blueetone no iron vessel should be u»ed *^ " "^ *"'"• ^"^ X. J f";"^'"/"'"''""--! lb. of formnlin (of normal strength = 40 .v, byde) to 40 Imp. ^^nllons of water. >fix well before n.e ' '••■lit formalde- Steeping method.— ¥i]] 1„iks half full „f ifniii 1)!,, I move several times „p and dcnvn ,., dri e he i ' .,, ' ,,d T ' " ^n'"""" ^■''""■"• blue»tone not Uvs than 2 minutes and n. n r ' ., i '■" "''" '"""^'*«1 "■ Uolution not 1«. than 4 minutes alld ^ll m , ' . mmutt '"jT' 'I '""r'J" «nd ^read ou, ,„ .Ir.v. Neither ^l,„i„„ U mh. "Ul," Z 1 in It T ^r*'/"*'" |. quantity by „^ .^ f,.H solution. Sn.,„ halls .^S^ ^Ir^^J^^al ^ 61568—1 Sprinkling method. — Either solution of the same strengtii may be used. Forty gallons suffices to treat 40-50 bushels of grain. Heap grain on clean floor. Sprinkle solution over it with a broom or sprinkling can. Mix well by shovelling over. When thoroughly mixed spread out grain immediately to dry if hluettone ia used. When using formalin pile the grain and cover with clean bags. After three hours spread out to dry. For large quantities treat in a grain wagon, mix well and leave covered over night. Moist grain cannot feed the drill as freely as dry grain; for this reason adjust the drill carefully to allow free flow or the stand will ! -« too thin. Drying after treating. — Never expose wet grain to temperatures below freezing (32° F.). On sunny days spread out in the open to dry. If the weather is unsuit- able spread gruiu out on clean bam floor. Dry as quickly as posBible, if left wet too long it will sprout. Avoid re-infection. — If not careful the spores of the smut fungi will reinfert the grain after treatment. As long as the grain is wet there is no danger, but once dry the risk is greater. Use new bags for re-bagging treated grain or dp old bags into either solution used, dry them, and they may be used again. Com smut is not controlled by seed treatment. Remove infected plants or parts as soon as noticed. Note. — Loose smuts of wheat and barley are not controlled by seed treatment with chemicals. Hot water should be used for this purpose. For description of this method and other particulars see Bulletin No. 113, issued by the Experimental Fann, Ottawa. For information on the control of grain diseases, potato diseases and similar troubles write to H. T. aijssow. Dominion Botanist, CeiMral Experimtnial Farm, Ottawa.