. The more important fruit tree diseases of Ontario [microform]. Fruit; Pulvérisation et poudrage en agriculture; Spraying and dusting in agriculture; Fruits; Exploitations agricoles. Thorough spraying requires great care and constant study. One should follow always some system with each tree, otherwise he will be missing parts here and there. So-netimes the best way is to take the tree branch by branch. At other times it is better to move the rod slowly np and down and -ori* (.'rndiially from left to right or to left, seeing that everything is as one goes. The angle on the noz
. The more important fruit tree diseases of Ontario [microform]. Fruit; Pulvérisation et poudrage en agriculture; Spraying and dusting in agriculture; Fruits; Exploitations agricoles. Thorough spraying requires great care and constant study. One should follow always some system with each tree, otherwise he will be missing parts here and there. So-netimes the best way is to take the tree branch by branch. At other times it is better to move the rod slowly np and down and -ori* (.'rndiially from left to right or to left, seeing that everything is as one goes. The angle on the nozzles permits the spray being directed first in one way then back in the opposite way, so that both sides of a branch or of fruits may l)e more easily cov- ered. Often both sides of the branch may be covered by holding the nozzles against the wind and allowing it to drive the spray back. An apple tree capable of bearing five or six ban els of fruit will usually require from eight to ten gallons of spray, especially for the Codling Moth or for San .Jose Scale. DUSTINT, TREES FOll INSECTS AND Dusting fruit trees tor Insects and diseases. (Original.) D"ring the last few years considerable success has been obtained, especial", in New York State, In treating trees with dust instead of liquid sprays. The dm used consisted of from 85 per cent, to W jxt cent, of very finely ground sulphur and 10 per cent, to 15 per cent, of the powder form of arsenate of lead. It is applied by means of a blower driven by a gjsoline engine. (See figure.) This is a very rapid and clean way of treating trees. At least twenty acres of large apple trees can be done in one day. The above substances, however, are useless against San Jos6 Scale, and also against Aphids and Pear Psylla. Other dust materials to combat these are being manufactured, but their success is still uncertain. We ourselves have had only Iwo years' trial ot dusting, and are unable therefore to speak with certainty as
Size: 1908px × 1309px
Photo credit: © The Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, booksubjectsprayinganddustingin
