Weeds of the Farm and GardenOrange Judd Company, 1912 - 281 páginas |
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... Germinating Pea 133 84 . Squash Seed Germinating 134 85 . Cross - Section of Buckwheat Seed 134 86 . Cross - Section of Date Seed 134 87 . Longitudinal Section of Kernel of Corn 134 88 . Common Brake 138 89 . Smooth Crab Grass 140 90 ...
... Germinating Pea 133 84 . Squash Seed Germinating 134 85 . Cross - Section of Buckwheat Seed 134 86 . Cross - Section of Date Seed 134 87 . Longitudinal Section of Kernel of Corn 134 88 . Common Brake 138 89 . Smooth Crab Grass 140 90 ...
Página 23
... germinate . In one case 8 per cent . of the seed was capable of producing new plants . In an investigation of quack grass in north- ern Iowa and Minnesota it was found that it is nearly always scattered near the grain elevators . Straw ...
... germinate . In one case 8 per cent . of the seed was capable of producing new plants . In an investigation of quack grass in north- ern Iowa and Minnesota it was found that it is nearly always scattered near the grain elevators . Straw ...
Página 32
... . I believe most seed merchants are beginning to realize the importance of selling good seed . The matter of germination is so unreliable and the seed varies from year to year so 32 Weed Impurities in Agricultural Seeds.
... . I believe most seed merchants are beginning to realize the importance of selling good seed . The matter of germination is so unreliable and the seed varies from year to year so 32 Weed Impurities in Agricultural Seeds.
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... germinated , notably those belonging to the pulse , water lily , and mallow families . In this connection the study made by Ewart on the Longevity of Seeds is of interest . Thus in some of the common Indian mallow or butter - print , 6 ...
... germinated , notably those belonging to the pulse , water lily , and mallow families . In this connection the study made by Ewart on the Longevity of Seeds is of interest . Thus in some of the common Indian mallow or butter - print , 6 ...
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... germination . He experi- mented with seven different kinds of weed seeds , as fol- lows : Great ragweed or kinghead ... germination of weed seeds . It was found that the seeds of different species showed great differences in germination ...
... germination . He experi- mented with seven different kinds of weed seeds , as fol- lows : Great ragweed or kinghead ... germination of weed seeds . It was found that the seeds of different species showed great differences in germination ...
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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