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8 > Image 8 of Kentucky fruit notes, vol. 4, No. 2, March 1950

Part of Kentucky Agricultural Experiment Station

4 ' 8 . Several materials will control the pest. Cne of these is lead arsenate. It is thought that the use of less lead arsenate and more DDT during the last several seasons has caused the build-up of the red-banded leaf roller. In apples, it is suggested that where a heavy carry -over is known to exist, Z lb of lead arsenate and 2 lb of lime be added to the regular pink bud spray. Also, since lead arsenate is recommended in the calyx and first and second cover sprays, this will, in turn, aid against the leaf roller. Where the pest makes a sudden appearance on either apples or peaches and must be checked at once, this can be done by spraying with Z lb of 50 percent Rhothane (also known as TDE) wettable powder to each 100 gal or 1 qt of the 25 percent Rhothane emul- sion per 100 gal. This is more effective than lead arsenate and can be used at times when it is not desirable to use lead arsenate. Parathion at the rate of 3/4 lb of 15 per- cent Rhothane emulsion per 100 gal will also control the leaf roller, when Rhothane is not available. _ While this pest can be very serious, it need cause no great concern for it can also be controlled fairly easily. The important thing is to watch the orchard closely for this and all other pests so that control measures can be applied before serious damage is done. 1949 STRAWBERRY INSECT CONTROL VVORK I } W., D. Armstrong Strawberry insect pests have caused heavy losses to the crop in Kentucky the past few years but recent tests offer great promise of effective control., The strawberry crown borer, an old pest, was more active and damaging in 1948 and 1949 than in a num- ber of years. The strawberry weevil, often referred to as the "clipper," has caused ser- ious crop reductions in the Bowling Green and Benton sections of southern and western I; Kentucky, but is not reported in damaging numbers elsewhere. lt has long been a major ' pest in Tennessee. The tarnished plant bug causes many cat~-faced, hardnosed, or "button" berries. This pest was serious in 1948 in several parts of the state but was less serious in 1949, It goes and comes and is more widely distributed than either the crown borer or P the weevil. It was definitely established in 1948 that the tarnished plant bug caused a type of cat-facing that had often been mistakenly credited to frost injury or malnutrition. In 1949 it was established also that the small millipede or "thousand legger" caused serious injury to berries in the Experiment Station plots and in many commercial fields. Injury was caused when this small pest ate into the berries, chiefly on the lower side or where they touched the ground. Thousand leggers" were often found curled up in the cavities they had dug into the berries. In an untreated plot, 30 percent of the berries at , one picking were injured by millipedes. It was also observed in 1949 that extensive strawberry leaf injury was caulsred late in the summer (chiefly in old patches) in central and northern Kentucky by the adult of the strawberry root worm,. a small shiny black beetle.