. Essay on the Hessian fly, wheat midge, and other insects injurious to the wheat crops [microform]. Wheat; Insects; Blé; Insectes. I'lUZB kshay: Folt is one pound to a gallon of water, laid on with a plasterer's brush, tho opera- tor walking down one furrow and up another, thus sprinkling both sides of the land. Or tho mixture may bo applied with a watering pot; in either case, there must be a second person to replenish tho supply to tho operator. Two pcrsonn will thus sprinkle four aercs a day. Tho modim-ojiemmti of tho salt destroying the puccinia is this : this plant being a fungus, its p
. Essay on the Hessian fly, wheat midge, and other insects injurious to the wheat crops [microform]. Wheat; Insects; Blé; Insectes. I'lUZB kshay: Folt is one pound to a gallon of water, laid on with a plasterer's brush, tho opera- tor walking down one furrow and up another, thus sprinkling both sides of the land. Or tho mixture may bo applied with a watering pot; in either case, there must be a second person to replenish tho supply to tho operator. Two pcrsonn will thus sprinkle four aercs a day. Tho modim-ojiemmti of tho salt destroying the puccinia is this : this plant being a fungus, its principal constituent is water, upon salt being applied, tho watery particles arc immediately absorbed, and thus tho mildew plant is destroyed. The action of salt upon , in making mushroom catsup, explains this theory. Rust is also a disease of tho wheat plant caused by a minuto fungus of the ooniomycetous order of plants. Tt is commonly ascribed by botanists to two species of tho genus UreuoâUrcJo luhhjo, and uredo luicarin, which probably are mere varieties of tho mildew fungus or imcclnia. It attacks wheat at all stages of its growth. The fungi have commonly an oraugo brown or rusty irou colour, when tho ppores are spherical tho disease is termed V. nihiyo, when they are oblong the fungus is called l\ linearis. Tho plants when affected seem as if they were dusted with a rusty powder, especially after the sporules have burst through the epidermis or skin of the stem. It is said to prevail more among tho rough chaffed wheats than others The rust is not so injurious as the true mildew, though it causes great havoc when it appears in the later stages of growth of the wheat plant. Tho predisposing causes arc the same as in the case of mildew; it is sometimes readily dissipated by an outburst of sunny weather, especially when attended with a healthy breeze playing over the grow- ing crop. The remedies arc the same as those mentioned for mildew. In the case of both mild
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Keywords: ., bookcentury1800, bookdecade, booksubjectinsects, booksubjectwheat
