Show FARM FA nr TAR OIL EMULSION FOR v OR APPLE APHIS spraying early advised to kill eggs on oil trees by arthur J farley professor of urology um rutgers university wilu service servi e e any period of war warm m weather in the spring is an ideal time tim e for the application on of a tar oil emulsion spray for the control of a apple aphis this material in at erial if applied at the proper strength will kill the aphis eggs now on the trees the stock emulsion as received from irom the manufacturer or dealer will contain 66 83 or 98 per ce cent n actual tar oil this should be diluted d it to provide 25 per cent actual tar oil in the diluted spray growers who have had difficulty controlling the apple aphis would do well to apply one of the tar oil emulsions while the trees are dormant and the temperature is above freezing since the treatment offers one of the most effective methods of control plans for applying tar oil emulsion sion should be made early enough to insure the completion of the job by the time the fruit buds appear silvery since the use of such a ml mixture after that stage of bud development may cause serious injury furthermore the application of excessive amounts of material should be avoided in the interest of safety and economy it is important however that the trees be completely coated with the spray since any aphis eggs which are missed will not be killed best results are obtained by floating the material into the tree with the wind in the form of a fine mist |