. 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. CBUCIFEBAE (MUSTARD FAMILY) 175 Canada. It is immensely prolific and its seeds have long vitality. Cold does it no harm and chemical sprays that kill other Mustards do not in the least affect it. Other crops cannot crowd it out, for it is the better crowder, seeding in dense timothy sod almost as readily as in a mellow fallow. Blooming "from snow to snow" and constantly developing fruit, it
. 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. CBUCIFEBAE (MUSTARD FAMILY) 175 Canada. It is immensely prolific and its seeds have long vitality. Cold does it no harm and chemical sprays that kill other Mustards do not in the least affect it. Other crops cannot crowd it out, for it is the better crowder, seeding in dense timothy sod almost as readily as in a mellow fallow. Blooming "from snow to snow" and constantly developing fruit, it requires and absorbs much of the food and moisture in the soil, starving the ac- companying crops almost to worthless- ness. T. N. Willing, Chief Weed Inspector of the Northwest Territory, says, "It will pay well to drop all other work and fight this weed when it is first ; (Fig. 120.) Stem six inches to two feet tall, smooth, bright green, often simple but usually branching at the top. Root-leaves long oval, broadest at tip, with long petioles; stem-leaves lance-shaped and clasping with a pair of pointed ears at the base; all leaves coarsely toothed. When bruised, the plant exhales a most disgusting gar- licky odor; if it is eaten by milch cows, the dairy products are spoiled. Flowers clear white, very small, in thick, flat terminal clusters; beginning to mature at the bottom of the cluster, they leave be- hind a long raceme of the fruits, standing out on slender, wiry, upcurved pedicels about as long as themselves. Silicles flat, about three-fourths of an inch across, pale green at first, broadly winged at the sides, notched at the top, two-celled, the division being across the narrowest part, as in Shepherd's Purse.; each side contains two to eight seeds. As the pods ripen they turn to a rusty orange color, making the weed very conspicuous when grow- ing with grain or clover. Seeds deep reddish brown, flattened ovoid, roughened with fine curved ridges abou
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
