Archive image from page 242 of Dairy farming being the. Dairy farming : being the theory, practice, and methods of dairying dairyfarmingbein00shel Year: 1880 Fig. G9.—Sectkin through OV.\RY OF , AT- TACKED BY Smut. immediately lieueath. turn become also tlio prey of disease. These fui)<;'al diseases are known by such names as smut, Ijiuit, rust, mildew, and ergot. Some attack one part of a plant, others another. Smut attacks the younti' seed, and sometimes it de- stroys the glumes as well. It is indicated by masses of dark-coloured dust (the spores) emerging from the iuHoreseenee,
Archive image from page 242 of Dairy farming being the. Dairy farming : being the theory, practice, and methods of dairying dairyfarmingbein00shel Year: 1880 Fig. G9.—Sectkin through OV.\RY OF , AT- TACKED BY Smut. immediately lieueath. turn become also tlio prey of disease. These fui)<;'al diseases are known by such names as smut, Ijiuit, rust, mildew, and ergot. Some attack one part of a plant, others another. Smut attacks the younti' seed, and sometimes it de- stroys the glumes as well. It is indicated by masses of dark-coloured dust (the spores) emerging from the iuHoreseenee, and perhaps from that jiortion of the stem Barley, rye, wheat, and es- pecially oats are attacked by smut, wild grasses being less liable. In warmer countries, maize and millet suffer, swellings us large as a turnip being some- times produced in the former (Figs. (58 and 09). The bunt, brand, or pepper-brand infests all kinds of wheat, spelt being less liable to attack than other sorts, and winter wheat less than spring wheat. This fun- gus, like smut, attacks the young seed, which it destroys and re- places by a black greasy sub- stance of disagreeable odour. 70 and 71. Rust and mildew attack chiefly the leaves and stems, and not often the seads, so that the injury rests chiefly in the very bad quality of the straw; nevertheless, the grains suffer to some extent. Rust is first indicated by blotches of browh rust-coloured dust breaking out on the surface of the jjlant. Certain spnres are then produced which get transferred to the bar- berry plant, on the leaves of which another stage in the life-history of the fungus is completed, re- sulting in the production of a new set of spores which can only germinate on wheat or some similar plant. This disease usually attacks wheat, barley, and oats; it is Fig. 70.—Bunt less frequent in rye and pasture- grasses. Mildew forms a delicate web-like covering on the green leaves of clovers, turnips, mangolds, &c. Ergot, or ergot o
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