. 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. LEGUMINOSAE (PULSE FAMILY) 227 when they remain green and succulent after grasses and other plants have become dry. But observation and experiment have demonstrated that, during the time of seed development, Lupines are very injurious to grazing animals, particularly sheep. Cattle usually reject the seeds, selecting the leafy parts of the plant which seem to contain little, if any, of the poisonous p
. 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. LEGUMINOSAE (PULSE FAMILY) 227 when they remain green and succulent after grasses and other plants have become dry. But observation and experiment have demonstrated that, during the time of seed development, Lupines are very injurious to grazing animals, particularly sheep. Cattle usually reject the seeds, selecting the leafy parts of the plant which seem to contain little, if any, of the poisonous property; but the seeds and pods contain a dangerous quantity of a substance known as lupinotoxin, which causes a disease called Iwpinosis, the acute form of which may cause death in a few hours, sometimes less than one. Sheep seem to have a preference for the pods, often nib- bling them from the plants and leaving the rest. Cornevin states that in 1880 more than fourteen thousand sheep died of this complaint in Germany, where Lupines of several species are much used as forage and for reclaiming sandy soils where clover does not readily "; This is rather a large species, one to nearly two feet tall, the stems erect and branching, covered with fine, appressed, silky hairs which give it a glaucous ap- pearance. Leaves on rather long petioles, the leaflets seven to ten, about two inches in length, short-spatulate, usually obtuse, smooth above but appressed hairy beneath, giving a glaucous appearance. Racemes Fig. 162. — Nebraska long and graceful, the flowers large and not lupine (Lupinus plat- crowded on the stalk, pale blue or pur- plish, the standard having a conspicuous blotch of darker color. Pods numerous, covered with appressed hairs, two- to five-seeded. (Kg- 162.) Means of control Prevent seed production by cutting while in early bloom or even before flowering. At times even the green fodder becomes dangerous, causing bloat and other symptoms of unwholeso
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectweeds, bookyear1919
