Diseases & insects of the home garden . smart, but is not poisonous. INSECTICIDESTwo kinds of insecticides are used for controlling insects, stomachpoisons and contact poisons. Stomach poisons, such as lead and lime arsenate, and paris green, areused for all insects which injure plants by chewing the leaves or stems,like striped cucumber beetles and potato beetles. Contact poisons, such as kerosene emulsion and nicotine sulphate, which kill by touchingthe insects, are forsucking insects likeplant lice and squashbugs. Stomach poisonsare of no value forsucking insects. LEAD-ARSENATE.—Lead-
Diseases & insects of the home garden . smart, but is not poisonous. INSECTICIDESTwo kinds of insecticides are used for controlling insects, stomachpoisons and contact poisons. Stomach poisons, such as lead and lime arsenate, and paris green, areused for all insects which injure plants by chewing the leaves or stems,like striped cucumber beetles and potato beetles. Contact poisons, such as kerosene emulsion and nicotine sulphate, which kill by touchingthe insects, are forsucking insects likeplant lice and squashbugs. Stomach poisonsare of no value forsucking insects. LEAD-ARSENATE.—Lead-arsenate is soldby most druggists andseedsmen both as apowder and as a is a good remedy fornearly all kinds of j)estswhich eat the leaves ofgarden plants. Itisusedeither mixed with wateras a spray or as a drypowder dusted onplants. HowtomaJcethe ,, N J • . u, . , , . —Take 1 levelteaspoon- FlG. 44. — A compressed-air sprayer suitable for larger gardens and » i n i i i i small fruit trees. lul ot powdered lead-. DISEASES AND INSECTS OF THE HOME GARDEN 29 arsenate for each pint of water. Mix thoroughly and apply withsprayer. If lead-arsenate paste is used, take 2 teaspoonfuls for eachpint of water to make a spray mixture. Hoiv to mix dust poison.—Where a sprayer is not available, a dustmay be used. This is made by thoroughly mixing 1 pound of pow-dered lead arsenate with 3 pounds of air slaked or powdered lime. Thismixture is put into a cheesecloth bag and dusted onto the plants byshaking the bag lightly over them. OTHER STOMACH POISONS, such as arsenate of lime and arsenateof zinc may also be bought from dealers. These are used like lead-arsenate, either in paste or powdered form. Directions for making themixtures will be found on the packages. NICOTINE SULPHATE.—For small gardens use a teaspoonful of nico-tine sulphate in a gallon of water. A 1-inch cube of hard soapshould be shaved up and thoroughly mixed into the directions for mixi
Size: 1514px × 1650px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublisherwashingtongovtprin
