Show Spray Controls on ro s Bacterial Spot Disease of Peaches Found in Orchards in Different Different Differ Differ- I ent Sections Prepared by tho United Department of or Agriculture A new spray containing zinc and lime Ume which promises to give ghe commercial control of bacterial spot of peaches has been developed by the United States Department of Agriculture This discovery is especially Important since I this Is the first time so far as known I that a bacterial disease of or fruits has hns been heen brought under un er direct control by I spraying I Disease Long Known I no ln Bacterial spot Slot has been known to I disease plant specialists for about 20 years but It Is only within the past 10 or 12 years that the disease has bas become seriously destructive over o extensive ex ex- areas It occurs In practically I all ull peach sections of ot the eastern half halt 1 of at the country but causes serious loss mainly in sections in which the soils are light and comparatively low In fertility Tests Testa carried on In southern Indiana and In Arkansas have shown that sIx sis I applications of or the spray at Intervals of ot two weeks beginning at petal fall raU greatly decrease the effects of ot the disease disease dis dis- ls- ls ease with no Injury to fruit or foliage In addition there was a a. stimulation which resulted In larger and darker green leaves It was found also that lea lead arsenate might be he used In connection connection connection tion with tills this t material thus reducing labor costs Its Composition The spray solution Is prepared by using 4 pounds of ot zinc sulphate 4 pounds s of hydrated lime and CO GO gallons gal gal- Ions lons of or water One pound of ot aluminum sulphate may be a added where agitation agitation agitation tion is s poor or entirely lacking as fiS this helps to keep the material In sion slon One of the first recommendations In Inthe Inthe inthe the control of bacterial spot of ot peaches Is to keep the orchard In do a high state of ot vigor through good cultivation pruning fertilization control of ot borers borers borers bor bor- ers etc In spraying it is necessary to cover the fruit and the under side of the leaves thoroughly |