Weeds of the Farm and GardenOrange Judd Company, 1912 - 281 páginas |
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Página 7
... perennial plant has a natural existence of more than two years . These plants produce stems and roots which send up flower stalks year after year . Examples of this class are morning glory , milkweed , horse - nettle , and horse ...
... perennial plant has a natural existence of more than two years . These plants produce stems and roots which send up flower stalks year after year . Examples of this class are morning glory , milkweed , horse - nettle , and horse ...
Página 8
... perennial stems , or both . In quack grass , one means of multiplication is by stems commonly called " roots , " which are divided into a series of joints at which new shoots are produced . The same structure occurs in germander or wood ...
... perennial stems , or both . In quack grass , one means of multiplication is by stems commonly called " roots , " which are divided into a series of joints at which new shoots are produced . The same structure occurs in germander or wood ...
Página 10
... perennials , have not only perennial roots but rootstocks also . A rootstock is simply a stem growing beneath the surface of the ground . Many weeds have strong tap roots , this being especially true of biennial weeds like the Canadian ...
... perennials , have not only perennial roots but rootstocks also . A rootstock is simply a stem growing beneath the surface of the ground . Many weeds have strong tap roots , this being especially true of biennial weeds like the Canadian ...
Página 12
... perennial plants , like Canada thistle , morning - glory , horse nettle , and milkweed , spread exten- sively through the ground . The root of a common milk- weed was traced by Mr. Garner and Mr. Lyle Clapper for a distance of 14 feet ...
... perennial plants , like Canada thistle , morning - glory , horse nettle , and milkweed , spread exten- sively through the ground . The root of a common milk- weed was traced by Mr. Garner and Mr. Lyle Clapper for a distance of 14 feet ...
Página 48
... perennial ( Lolium perenne ) . 96 Rye grass , Italian ( Lolium italicum ) . 95 Sorghum ( Andropogon sorghum ) . 96 Sorghum , for fodder 90 Timothy ( Phleum pratense ) . 96 Wheat ( Triticum ) 85 98 90 160 888 75 85 89 85 85 65 90 70 70 ...
... perennial ( Lolium perenne ) . 96 Rye grass , Italian ( Lolium italicum ) . 95 Sorghum ( Andropogon sorghum ) . 96 Sorghum , for fodder 90 Timothy ( Phleum pratense ) . 96 Wheat ( Triticum ) 85 98 90 160 888 75 85 89 85 85 65 90 70 70 ...
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Términos y frases comunes
achenes alfalfa annual awned biennial blue grass bracts branched brome grass bull thistle C. M. King calyx Canada thistle carpels cent Cirsium clover seed clusters cocklebur common weed corn corolla crab grass crop cultivated curled dock dodder erect Europe five five-lobed four foxtail fruit germination glabrous glumes hairy herb horse nettle impurities inches long involucre Iowa lanceolate leaf leaves linear lobes marsh elder meadows milkweed Minnesota Missouri morning glory mustard native North numerous oats oblong ovary ovate ovules panicles pappus pastures pepper grass perennial petals petioled pigweed pinnately pistil Plantago plantain plants plowing poisonous Polygonum prickly pubescent purple quack grass racemes ragweed roadsides roots rootstocks Rumex sepals sessile sheaths sheep sorrel slender smartweed smooth soil species spikelets spikes spreading Spurge squirrel-tail stamens stem stipules sulphate Sunflower sweet clover Texas three feet high toothed troublesome weed U. S. Dept upper waste places weed seeds wild yellow