. Bulletin. onepound to 200 gallons of water, to destroy the plum curculio. August 11th, sprayed with the ammoniacal carbonate of copper,one pound to twenty-five gallons of water. Results. The trees sprayed retained their foliage much later thanthose unsprayed, as is shown by the illustration, plates VI, VII, andthere was less rotting of the fruit. Only a few plum warts developedon the sprayed trees and those that appeared seemed to have becomeestablished the previous season. To determine whether concentrated solutions of Paris green in theBordeaux mixture could be used without injury to the f
. Bulletin. onepound to 200 gallons of water, to destroy the plum curculio. August 11th, sprayed with the ammoniacal carbonate of copper,one pound to twenty-five gallons of water. Results. The trees sprayed retained their foliage much later thanthose unsprayed, as is shown by the illustration, plates VI, VII, andthere was less rotting of the fruit. Only a few plum warts developedon the sprayed trees and those that appeared seemed to have becomeestablished the previous season. To determine whether concentrated solutions of Paris green in theBordeaux mixture could be used without injury to the foliage, it wasapplied in three proportions, 1 lb. to 50 gal., 1 lb. to 100 gal. and1 lb. to 200 gal. After a close and careful examination no injurycould be discovered from any of the solutions. EXPERIMENT NO. 5. Grape vines and all parts of the trellis were thoroughly sprayed forthe mildew and black rot, April 23d, with the three concentratedsolutions, sulphate of copper, sulphate of iron, and the Bordeaux.
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