. Fruits, vegetables and flowers, a non-technical manual for their culture. protected fromfreezing too hard by a layerof straw, leaves and them moist and may be brought intoflower a pot at a time andfurnish pleasure fromThanksgiving to April—agamut of color and delight-ful fragrance. Plant Lice.—The mostprevalent insect pest at-tacking house plants is theplant douse, a little greeninsect feeding upon theunder side of leaves andtender shoots. Another form is black. Both forms are combated by tobacco concoctions obtain-able ready-made at the seed store; also, the plants may
. Fruits, vegetables and flowers, a non-technical manual for their culture. protected fromfreezing too hard by a layerof straw, leaves and them moist and may be brought intoflower a pot at a time andfurnish pleasure fromThanksgiving to April—agamut of color and delight-ful fragrance. Plant Lice.—The mostprevalent insect pest at-tacking house plants is theplant douse, a little greeninsect feeding upon theunder side of leaves andtender shoots. Another form is black. Both forms are combated by tobacco concoctions obtain-able ready-made at the seed store; also, the plants may be fumigated withburning tobacco, dusting the leaves with tobacco dust, and by sprayingthe leaves with soap in solution. The insect must be ivet with the solu-tion, so care must be exercised in spraying to reach the under side of theleaves. Another common pest is the brown scale which attaches itselffirmly to branch or leaf and resists water and fumigation. It can beremoved by brushing the leaves and by kerosene emulsion, which, how-ever, may injure a tender Btilbs Grown in Water-tight Receptacle.^ REFERENCE. Manual of Gardeinng. Bailey. > Courtesy of The Countryside Magazine, N. Y. PART II PLANT DISEASES, INSECT ENEMIESAND THEIR CONTROL (197) CHAPTER 18 Diseases of Garden and Orchard Crops; and Their Remedies By Dr. Mel. T. CookPlant Pathologist, New Jersey Agricultural Experiment Station When any of the various parts of a plant are not doing their workproperly the plant is said to be diseased. The disease frequently causespoor growth or poor fruit, or both; and in case of our cultivated plants, anunsatisfactory crop. The most important causes of plant diseases are fungi, bacteria, slimemoulds, parasitic flowering plants, insects, mites, nematodes, unsatisfactorysoil, too much or too small amount of moisture, unfavorable temperature,gas fumes and smoke. Some plant diseases occur for which there are nosatisfactory explanations. Plant diseases may be detected by
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