Show spray controls bacterial spot disease of peaches found in orchards in different sections prepared by th united department of AtTl culture A new spray zinc and lime which promises to ghe commercial control of bacterial spot of peaches has been developed by the united states department of agriculture this discovery Is especially important since this la the first time so far as known that a bacterial disease of fruits has been brought under direct control by spraying disease long known bacterial spot has been known to plant disease specialists tor about 20 years but it Is only within the past 10 or 12 years that the disease has become seriously destructive over extensive areas it occurs in practically nil peach sections at the eastern halt of the country but causes serious loss mainly in sections in which the soils are light and comparatively low la fertility tests carried on in southern indiana and in arkansas have shown that six applications of the spray at intervals of two weeks beginning at petal fall greatly decrease the effects of the disease with no injury to fruit or foliage in addition there was a stimulation which resulted in larger and darker green leaves it was found also that lead arsenate might be used in connection with this material thus reducing abor costs its composition the spray solution Is prepared by using 4 pounds of zinc sulphate 4 pounds of hydrated lime and CO gallons of water one pound of aluminum sulphate may be added where agitation Is poor or entirely lacking as this helps to keep the material in suspension one of the first recommendations in he control of bacterial spot of peaches s to leep the orchard in a high state of vigor through good cultivation pruning fertilization control of borers etc in spraying it Is necessary to cover the fruit and the under side of the leaves thoroughly |