. The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists . , not less than 150 differentdiseases of plants are now known to be due to theattacks of parasitic bacteri
. The standard cyclopedia of horticulture; a discussion, for the amateur, and the professional and commercial grower, of the kinds, characteristics and methods of cultivation of the species of plants grown in the regions of the United States and Canada for ornament, for fancy, for fruit and for vegetables; with keys to the natural families and genera, descriptions of the horticultural capabilities of the states and provinces and dependent islands, and sketches of eminent horticulturists . , not less than 150 differentdiseases of plants are now known to be due to theattacks of parasitic bacteria. Some of the commonestbacterial diseases of plants are, fire-blight, crown-gall,olive-knot, soft-rot of vegetables, potato-scab, cucum-ber-wilt and black-log of potatoes. Fungi (see Vol. Ill) are perhajjs responsible for farthe greater number of the diseases of plants. They arethe causal agents in such well-known diseases as apple-scab, brown-rot of plums and peaches (Fig. 1285),black-rot of grapes, (Fig. 1286) bitter-rot of apples,brown-rot of lemons, late blight of potatoes, peach- DISEASES AND INSECTS DISEASES AND INSECTS 1023 leaf-curl, heart-ot and canker of trees, mildew ofmany plants, rusts and smuts of cereals (Figs. 1287,1288, ! Experiment Station); in fact the mereenumeration of the more common fungous diseases ofplants would fill many columns in this volume. Algie, low forms of green plants, most of them livingju water or very damp places. Few are known to pro-. 1281. Currant foliage attacked by the leaf-spot fungus. ( X li) duce disease in plants. The red rust of tea is one ofthe best known algal diseases. Parasitic angiosperms,—flowering plants, of whichthere is no inconsiderable number, causing more orless injury to the plants upon which they live. Theseparasites are usually markedly degenerate in one ormore respects, as a result of their parasitism, beingoften without true roots, or without leaves and fre-quently without chlorophyl green. As examples w
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Keywords: ., bookcentury1900, bookdecade1910, bookpublis, booksubjectgardening
