. Essay on the Hessian fly, wheat midge, and other insects injurious to the wheat crops [microform]. Wheat; Insects; Blé; Insectes. HESSIAN FLY, MIDGE, AC. 21 ticable, and if possible, neighbours should arrange amongst themselves to sow adjoining fields in the same year. Feed all the wheat, or other straw, which may be infected, in racks or pens, or on confined spots, and in April set fire to all refuse fragments about the racks, and on or before the first of May carefully burn all the straw which has not been fed. The refuse of wheat, such as screenings, &c., should also be destroyed, as
. Essay on the Hessian fly, wheat midge, and other insects injurious to the wheat crops [microform]. Wheat; Insects; Blé; Insectes. HESSIAN FLY, MIDGE, AC. 21 ticable, and if possible, neighbours should arrange amongst themselves to sow adjoining fields in the same year. Feed all the wheat, or other straw, which may be infected, in racks or pens, or on confined spots, and in April set fire to all refuse fragments about the racks, and on or before the first of May carefully burn all the straw which has not been fed. The refuse of wheat, such as screenings, &c., should also be destroyed, as the pupa case is hard, and not easily softened by dampness or ;f These directions are worthy of careful attention,* as being the remedies pro- posed by those who have become painfully and practically acquainted with this destructive insect. A free use of manure and thorough tillage, by promoting a vigorous and rapid growth of the plant, is likely to render it less liable to suffer from the attacks of this insect. Large fields, sown with a liberal supply of seed, will probably escape better than those that arc smaller and thinner sown, as the insects will not be able to penetrate so far when about to lay their eggs. Hence the advantage of neighours combining where possible, to have their wheat sowa in a large block. CHAPTER VII. DIPTERA. Cecidomyioe—Hessian Fly—Wheat-midge—History—Devastations—Remedies. Under this order are classed all insects having only two wings, with two little knobbed threads in the place of hind wings, and a mouth formed for sucking or lapping. The word Diptera signifies two-winged. The young insects hatched from the eggs of gnats and flies belonging to this order, are fleshy larvae, usually of a whitish colour, and without legs. W. ^ Ventral view of the terminal tegmenta of the abdomen. {Mag.) Joints of Antmnoe. Male.—[Mag.) Nat. Size. HESSIAN flt. M"/''.—(Mag.) The far-famed Hessian fly, and the wheat midge, belong to the fa
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Keywords: ., bookcentury1800, bookdecade, booksubjectinsects, booksubjectwheat
