. Maize; its history, cultivation, handling, and uses, with special reference to South Africa; a text-book for farmers, students of agriculture, and teachers of nature study. Corn; Corn. 4io MAIZE CHAP. X. out on the surface of the invaded parts as a black dusty mass. To quote Mr. Pole Evans (i, 2, and 3): " The black powder or smut consists of myriads of microscopic reproductive bodies, com- monly known as spores. They serve to propagate the fungus and dissemin- ate the disease,tand corre- spond in function to seeds in the higher plants. Each spore is brown and spheri- cal, and measures
. Maize; its history, cultivation, handling, and uses, with special reference to South Africa; a text-book for farmers, students of agriculture, and teachers of nature study. Corn; Corn. 4io MAIZE CHAP. X. out on the surface of the invaded parts as a black dusty mass. To quote Mr. Pole Evans (i, 2, and 3): " The black powder or smut consists of myriads of microscopic reproductive bodies, com- monly known as spores. They serve to propagate the fungus and dissemin- ate the disease,tand corre- spond in function to seeds in the higher plants. Each spore is brown and spheri- cal, and measures about one thirty-three hun- dredths of an inch in dia- meter. Under favourable conditions these spores germinate, and give rise to a number of secondary bodies, which are blown about by the wind. " It is found that the spores germinate more readily, and also give rise to a larger number of secondary bodies, in fresh stable manure than in ordinary soil. Conse- quently, if a heavy dressing of fresh stable manure is applied to land infested with smut spores just before planting, the risk of infection will be much greater to plants growing in such ground, inasmuch as more secondary bodies will be produced than would have occurred in untreated land. "As the secondary spores are able to infect all young and tender parts of the maize plant, their presence in the maize lands should be prevented as far as possible. This can best be done by removing and burning all smutted plants, by using seed free from smut spores, and by avoiding the use of fresh stable manure at the time of ; This parasite is said to occur wherever maize is grown. It appears to be spreading in some parts of South Africa. In some cases in the Standerton District, Transvaal, it was found. Fig. -Maize smut or brand on the Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illu
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectcorn, bookyear1914
