KEASURESFORCONTROLLING HARMFUL GRAPE-ROOT WORM Special Investigation Made hy Iturcau of Entomology at Washington Spruylna With Arsenical Poison Is HicommttiJiJ. tivallon maintained ihroiiKhout tbe Whi-re a vineyard la dcflroyed for ny reason tin) hind fhould Ic devoted to Bomn other crop than Rrmi for at least duo ytar prior to retting grapca on tht land aKHln. In other wurdu, new vlneyanlrt hhould be wet on new land and newly planted vines should bo kept as thrifty h possible between planting and the bearing of the first crop fruit. During this lime each Adult (Enlarged). Hummer the vlneyardlst nhould keep a sharp lookout for beetles. When these are numerous they skeletonize skele-tonize the leaves, and this greatly retards re-tards the growth of the plant. During the last 10 or 15 years the fntpe-root worm has attracted much nttentlon on account of ravages In Vineyards In Ohio, I'eiiiiHyl vuula and New York. American varieties of grapes had bwn rather free from Insect In-sect attacks on the roots up to that time, but the grape root worm Is now recognized as the inoht serious of the Insects that feed on our grapes. A special Investigation by the bureau of entomology at Washington has been made the subject of a report, bulletin No (!. from which the following extracts ex-tracts are made: After discussing the vineyard conditions, condi-tions, remedial measures tested and various field experiments to control the pest, the report recommends spraying the vines with an arsenical poison when the beetles feed on the foliage. They feed much more freely Immediately after emergence from the ground than later on. hence the advisability ad-visability of spraying promptly. A sharp lookout fchould. therefore, be kept from the middle of June forward. If pupae are found In the soil the beetles may be expected to emerge within a week or ten days. The formula for-mula recommended consists of arsenate arsen-ate of lead three pounds to t0 gallons bordeaux, the 65 formula. When pupae are discovered the soil beneath the trellis should be removed by the horse hoe and carefully and thoroughly stirred with the hand hoe. flip Larva (Enlarged). The efficiency of this method may be Increased ly throwing up a ridge of earth beneath the trellis during the last cultivation preceding summer to encourage the worms to form their pupal cells above the roots of the vine, anil thus admit destruction by cultivation without serious Injury to the vine roots. No experiments with oil, carbon dlsulphlde, fertilizers, salt, etc., have been found effective In controlling con-trolling the pest while in the ground, and no spray has been of use in destroying de-stroying the eggs because these ara protected by the bark. 'v tDlrl pon generally exhibits serious, permanent Infestation be- Pup (Enlarged). cause the vines have by that time grown somewhat rough, and there are crevices In which the females may lay. When the vines In a producing vine- i yard have been badly Injured they may frequently be renovated by cut ting back to the ground, so the llm Ited vitality may be devoted tc making vegetable growth. A heavy ap plication of fertllUpr may be made the vines thoroughly sprayed wher the beetles appear, and thorough cul