. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 116 DISEASES OF CROPS. deeply ploughed, so tkat the stubble may be buried; or it may be cultivated, or scarified and the stubble harrowed together and carefully burnt" (Whitehead). (6) Farmers should " destroy ' flax-seeds * found (after threshing in- fested straw) in siftings or light ; (7) In the United States of America stubbles are burnt as they stand. In some cases this method might be advantage- ously applied in England. Cure.—(I) Dressings of gas-lim
. The diseases of crops and their remedies : a handbook of economic biology for farmers and students. Plant diseases. 116 DISEASES OF CROPS. deeply ploughed, so tkat the stubble may be buried; or it may be cultivated, or scarified and the stubble harrowed together and carefully burnt" (Whitehead). (6) Farmers should " destroy ' flax-seeds * found (after threshing in- fested straw) in siftings or light ; (7) In the United States of America stubbles are burnt as they stand. In some cases this method might be advantage- ously applied in England. Cure.—(I) Dressings of gas-lime, in either the autumn or spring, have been recommended for destroying the. Fig. 44.—The Wheat Midge or Ply {Cecidomyia tritici). A. LarvsB feeding on wheat. B and 0. LarvsD (nat. size and enlarged). D and E. Tlie Uy (nat. size and enlarged). larvsB, etc., of this pest. (2) Applications of lime, or a mixture of soot and lime, are also recommended for the same purpose. The Wheat Midge (Cecidomyia tritici, Pig. 44) be- longs to the same genus, and is therefore a near relative of the Hessian fly. It is a small, pale, orange-coloured fly, with clear, almost veinless wings. The female fly visits the florets of the wheat just as they are opening, and deposits its eggs amongst the reproductive organs of the florets, by means of a long, extensible ovipositor. The eggs (which are oblong and transparent) are hatched in. 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
