. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 672 ADDITIONAL EXERCISES "Dflute this stock resin solution with 8 parts of water before adding to the Bordeaux mbcture, that is in preparing a so-gallon barrel of the mixture, the copper sulphate and lime are diluted enough to make 40 gallons after which 2 gallons of stock resin solution are diluted to 10 gallons, then added to the ; This solution exceeds ordinary Bordeaux in adhesive properties and has been highly recommended for asparagus rust. Method of Malting Sma
. A text-book of mycology and plant pathology . Plant diseases; Fungi in agriculture; Plant diseases; Fungi. 672 ADDITIONAL EXERCISES "Dflute this stock resin solution with 8 parts of water before adding to the Bordeaux mbcture, that is in preparing a so-gallon barrel of the mixture, the copper sulphate and lime are diluted enough to make 40 gallons after which 2 gallons of stock resin solution are diluted to 10 gallons, then added to the ; This solution exceeds ordinary Bordeaux in adhesive properties and has been highly recommended for asparagus rust. Method of Malting SmaU Quantities of Bordeaux Mixture.—Two half-barrel tubs are made by sawing a barrel through the middle. One tub is used for the blue-stone solution and the other for the milk of lime, and each tub should contain 23 gallons. One man dips the blue-stone solution with a bucket and pours it into a barrel and another man simultaneously dips up and pours in bucketfuls of the milk of lime. Fine ocsh scran onlfuinel to atnun Bordcoax. U^tbe mixture at once m^proipr-*' Sproyer Fig. 237.—Diagram showing easy method of making small quantities of Bor- deaux mixture. (After Coons, G. H., and Levin. Ezra, Spec. Bull. 77, Mich. Agric. Coll. Exper. Slat., March. 1916.) The lime solution should be kept \Tell stirred. If only a single barrel is to be made, the materials may be dissolved in the dilution tubs, but if a number of lots are re- quired the materials can be kept in stock solutions and simply transferred by dipping. No matter what quantity of mixture is to be made up, it is necessary to strain the materials through a wire strainer. The best type is made of brass wire with 18 to 20 meshes to the inch (Fig. 237). For details see Waite, M. B.: Fungicides. U. S. Fanners' Bull. 243 (1906). In large operations stock solutions should always be used, as the time required to dissolve the material is saved. These can be prepared of both copper sulphate and the lime. Dissolve copper sulphate in
Size: 2066px × 1209px
Photo credit: © Central Historic Books / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectfungi, bookyear1917
