. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. DISEASES OF CROPS. Prevention.—IniestBA seeds should not be sown. Farmers should make a practice of examining their seeds —and especially foreign seeds—before sowing or drilling. Cure. — (1) " Kiln-drying, if judiciously performed, would destroy the larvse, without affecting the germinat- ing power of the seeds. About 120° F. is held by some authorities to be a safe and sufficient maximum of heat to accomplish ; But it must be borne in mind that kiln-drying is of
. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. DISEASES OF CROPS. Prevention.—IniestBA seeds should not be sown. Farmers should make a practice of examining their seeds —and especially foreign seeds—before sowing or drilling. Cure. — (1) " Kiln-drying, if judiciously performed, would destroy the larvse, without affecting the germinat- ing power of the seeds. About 120° F. is held by some authorities to be a safe and sufficient maximum of heat to accomplish ; But it must be borne in mind that kiln-drying is of use only for comparatively new A Fig. 42.—CoBN Theips {Thrips cerealium). A. Com thrip (enlarged). B. Its nat. size. C. Larva of thrips (enlarged). What would be the use of kiln-drying seeds which have already lost the greater part of the farinaceous matter and possibly the germs damaged by the larvse of this pest ? It is impossible for such seeds to produce any- thing like satisfactory crops. (2) Washing the floors, etc., of granaries with soft soap and paraffin oil, and lime- washing the ceilings, destroy this pest. The Wheat or Corn Thrips {Thrips cerealium, Thrips tritici, Fig. 42)i belong to the natural order Physopoda. The members of this order are generally 1 For an excellent account of various species of Thrips, see Linde- man's Die am Getreide Lebenden Thrips arten Mittelrusslands, pp. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Griffiths, A. B. (Arthur Bower), 1859-. London : G. Bell
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Keywords: ., bookauthorgriffith, bookcentury1800, bookdecade1890, bookyear1890
