Weeds of the Farm and GardenOrange Judd Company, 1911 - 281 páginas |
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Página 12
... species that live from year to year , the size of the root becomes an index of the persistency and pestiferousness of the plant . " Then he comments upon the length of roots of a great many different weeds , stating that the common ...
... species that live from year to year , the size of the root becomes an index of the persistency and pestiferousness of the plant . " Then he comments upon the length of roots of a great many different weeds , stating that the common ...
Página 27
... species of weed seeds was compiled by D. C. Snyder and Charlotte M. King in the Botanical Labora- tory of the Iowa state college . To ascertain the number of seeds per pound in any given variety multiply the num- ber per gram by 453.584 ...
... species of weed seeds was compiled by D. C. Snyder and Charlotte M. King in the Botanical Labora- tory of the Iowa state college . To ascertain the number of seeds per pound in any given variety multiply the num- ber per gram by 453.584 ...
Página 36
... pulse , and mint families had a Becquere also made a vitality of seeds , and prolonged vitality . Later study of the prolonged he found of the 550 species studied by him , the age of seeds varied 36 WEEDS OF THE FARM AND GARDEN.
... pulse , and mint families had a Becquere also made a vitality of seeds , and prolonged vitality . Later study of the prolonged he found of the 550 species studied by him , the age of seeds varied 36 WEEDS OF THE FARM AND GARDEN.
Página 37
Louis Hermann Pammel. species studied by him , the age of seeds varied from 125 to 135 years , and that a few of the old seeds germinated , notably those belonging to the pulse , water lily , and mallow families . In this connection the ...
Louis Hermann Pammel. species studied by him , the age of seeds varied from 125 to 135 years , and that a few of the old seeds germinated , notably those belonging to the pulse , water lily , and mallow families . In this connection the ...
Página 38
... of weed seeds . It was found that the seeds of different species showed great differences in germination ; in general the results of 1902 and 1903 indicated that stratification in sand and 38 WEEDS OF THE FARM AND GARDEN.
... of weed seeds . It was found that the seeds of different species showed great differences in germination ; in general the results of 1902 and 1903 indicated that stratification in sand and 38 WEEDS OF THE FARM AND GARDEN.
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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.