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Show Grapes Grapevine leaf hopper Nicotine sulphate, pint, soap, 2 pounds, water wa-ter to make 100 gallons. Early spring before symphs develop wings. Spittle bug Same as for grapevine grape-vine leaf hopper. Powdery mildew Dust with dusting dust-ing sulphur in summer as disease appears. Downey mildew Spray with Bordeaux Bor-deaux mixture or dust with sulphur just before blossom buds open. Crown gall Prune out infected branches during the dormant season. If vines are badly infected, remove and burn. This disease attacks chiefly the European varieties. Dead arm Prune out infected branches during the growing season when effects of disease can be observed. ob-served. If badly infected, remove the vines, take cuttings from disease-free rineyards. Walnuts Coddling moth control Begin application appli-cation as soon as work on green husks appear. May, June or July, spray with arsenate of lead, 3 lbs., water, 100 gallons. Walnut aphis Nicotine dust, 2 per cent. Apply when aphides appear. Pigs dormant spray and almonds dormant spray Same as for peaches. Insects that Feed Promiscuously Red Spider Dormant spray of lime sulphur as for peaches. This insect is particularly bad when the summer is devoid of rainfall. Also summer lime sulphur spray at of dormant strength. . Tent caterpillar Prune out and burn tent masses. Spray with arsenate arse-nate of lead and 300 gallons of water. Grasshoppers and crickets. Tear up breeding grounds with disk or spring tooth harrow; scatter arsenic bran mash in infested fields and around fruit trees. This mash is made by mixing 25 pounds bran, 1 pound white arsenate, 3 quarts molasses and enough water to moisten the mixture. mix-ture. Materials should be broadcast. Vegetable and Garden Insect Fests All sucking insects, squash bugs and aphis are controlled with poisonous pois-onous dust, either cyanogas dust, or nico dust. Chewing insects such as beetles, grasshoppers, cabbage worms, corn ear worm, Mexican bean beetle, etc., can be controlled with arsenic poison, and contact poisons such as j the above named dusts. |