. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. 26 GRAMINEAE (GRASS FAMILY) out. Professor Spillman succeeded in cleansing a plot of Johnson- grass in one year, without loss of the use of the ground, by a sys- tem of fall plowing, with a turning plow capable of turning every inch of the sod, harrowing thoroughly for the purpose of loosening the soil, and then removing the rootstocks with an implement called a root-digger, or grass-hoe. This method
. A manual of weeds : with descriptions of all the most pernicious and troublesome plants in the United States and Canada, their habits of growth and distribution, with methods of control . Weeds. 26 GRAMINEAE (GRASS FAMILY) out. Professor Spillman succeeded in cleansing a plot of Johnson- grass in one year, without loss of the use of the ground, by a sys- tem of fall plowing, with a turning plow capable of turning every inch of the sod, harrowing thoroughly for the purpose of loosening the soil, and then removing the rootstocks with an implement called a root-digger, or grass-hoe. This method is discussed in detail in Bulletin 72 of the Bureau of Plant Industry. CRAB-GRASS Digitaria sanguinalis, Scop. (Syntherisma sanguinalis, Nash.) Other English names: Finger Grass, Polish Mil- let, Purple or Large Crab-grass. Introduced. Annual. Propagates by seeds and by rooting at the lower joints. Time of bloom: July to September. Seed-time: August to October. Range: Throughout the world. Habitat: Cultivated ground, waste places. The seeds of this grass must be very long- lived, for, though it is never sown, let the ground be cultivated, and as a general thing Crab-grass will be there. In the Southern States this is regarded as a good thing, for the spon- taneous growth of the grass in grain fields after harvest often yields a heavy crop of nutritious hay and good pasturage after that. It is in gardens, lawns, and cultivated ground that the plant makes itself a plague, particularly in a moist season. (Fig. 5.) Culms one to four feet long, decumbent or creeping at base, and putting forth roots wher- ever the joints are in touch with moist soil. Sheaths and basal part of the blades rough and more or less hairy, the blades three to six inches long and a quarter to a half-inch wide. Spikes er^\D%itariaT^ usually three to six in number but occasionally guinalis). x i. as many as ten, two to five inches long, gener-. Please note that these images are extracted from scanned page ima
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
