Weeds of the Farm and GardenOrange Judd Company, 1911 - 281 páginas |
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Página 4
... frequently injurious because they harbor fungi . The well - known club root of cabbage occurs on mustard and on other allied plants ; also on common pepper grass , and Dr. Halsted has shown that this is a frequent source of the disease ...
... frequently injurious because they harbor fungi . The well - known club root of cabbage occurs on mustard and on other allied plants ; also on common pepper grass , and Dr. Halsted has shown that this is a frequent source of the disease ...
Página 8
... frequent- ly in Iowa or in the United States as in Europe . Vegetative Repro- Many duction . weeds multiply by Fig . 2 . root . means of roots , Woolly thistle , a type of perennial stems , or both . In quack grass , one means of ...
... frequent- ly in Iowa or in the United States as in Europe . Vegetative Repro- Many duction . weeds multiply by Fig . 2 . root . means of roots , Woolly thistle , a type of perennial stems , or both . In quack grass , one means of ...
Página 10
... frequently enlarged bearing several more or less promi- nent lateral roots . The cocklebur , which belongs to the same family , has a tap root which is considerably thickened near the sur- face of the ground , and which has large ...
... frequently enlarged bearing several more or less promi- nent lateral roots . The cocklebur , which belongs to the same family , has a tap root which is considerably thickened near the sur- face of the ground , and which has large ...
Página 12
... frequently produce numerous roots when the plants are injured , although ordinarily these roots are straight and produce a single thick fleshy root . The characters of roots sometimes differ very materially in closely related species of ...
... frequently produce numerous roots when the plants are injured , although ordinarily these roots are straight and produce a single thick fleshy root . The characters of roots sometimes differ very materially in closely related species of ...
Página 16
... frequently carried in this way . So , too , are the foxtails . Prof. H. L. Bolley states that January 20 , he found in the contents of a snow drift of 28 square feet , 2 seeds of pig- eon grass , 5 of French weed , 2 of biennial ...
... frequently carried in this way . So , too , are the foxtails . Prof. H. L. Bolley states that January 20 , he found in the contents of a snow drift of 28 square feet , 2 seeds of pig- eon grass , 5 of French weed , 2 of biennial ...
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Términos y frases comunes
achenes alfalfa annual awned biennial blue grass bracts branched 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 grain fields 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 plant Plantago plantain plowing poisonous Polygonum prickly pubescent purple quack grass racemes ragweed roadsides roots rootstocks Rumex sepals sessile sheaths sheep sorrel shrubs slender smartweed smooth soil species spikelets spikes spreading Spurge squirrel-tail stamens stem stipules sulphate Sunflower sweet clover tall Texas three feet high toothed troublesome weed upper waste places weed seeds wild yellow
Pasajes populares
Página 45 - ... sold, offered or exposed for sale within this State, shall have affixed thereto, in a conspicuous place on the outside thereof, a legible and...
Página 281 - CHICAGO ASHLAND BUILDING PEOPLE'S GAS BUILDING 315-321 Fourth Avenue ISO Michigan Avenue Any of these books will be sent by mail, postpaid, to any part of the world, on receipt of catalog price. We are always happy to correspond with our patrons, and cordially invite them to address us on any matter pertaining to rural books.
Página 47 - This shall not, however, exempt the seller from the restrictions of section ten (10) of this act. Third. Seed that is held in storage for the purpose of being recleaned, and which has not been offered, exposed or held in possession of or for sale for the purpose of seeding. Fourth. Seed marked "not absolutely clean," and held or sold for export outside the state only.