Show controlling CODLING MOTH liquid spray of lead arsenate Is re recommended om mended by expert of okla homa station A liquid spray of lend lead arsenate la Is about the only method 0 of controlling tile codling moth the spray commonly mon ay know as the lie calyx spray Is of greatest importance in preventing apples from becoming wormy use one and one halt half pounds pound of powdered lead ar arsenate nate to 50 glI gallons of water or 1 if the paste form of lead at ar m nate Is used add three pounds to 50 90 gallons lions of water the oung boung worms of the first brood usually enter the hie fruit through the calyx or blossom lilos som deml en I 1 of the tipple apple make the application after most ol of the petals have aidlen the rule usually followed Is to spray when about three fourths of the hie petals or bilte VAI parl rt of the blossom are shed to be effective tile application must be made before the calyx end of the apple closes after the calyx Is closed it Is almost impossible to force the poison into it the application should be maile made with a pump that will maintain nt least pounds constant pressure use a good strong spray spi ay hose bose and extension rod red equipped with aith a bordeaux nozzle or spray gun the spray must be forced into the c calyx alyx end of the apple this means that the tree must be sprayed from all angles rach each calyx cup must be loaded with poison because from this cup the young worm takes its first lunch do not omit the first or calyx spray it Is the most effective A few worms will evade the calyx spray some of them will first feed on the tender leaves and then entel entzi the lie fruit through the side instead ot of tile the end A second spray consisting of the same amount of lead arsenate added to 50 gallons of bordeaux borde aus mixture should be about two weeks after the first spray A complete spray schedule tor for controlling the codling moth Is not complete until four different sprays are applied the third spray should be the same as tile the second and applied about four weeks after the second spray the fourth spray li Is the same as the tle second and should be applied about four weeks after the third it would be better to omit the third and fourth than to omit the first and second the first should not be omitted cy by W B E jackson acting entomologist oklahoma agricultural experiment station |