Weeds of the Farm and GardenOrange Judd Company, 1912 - 281 páginas |
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Resultados 1-5 de 28
Página 12
... cent of the rootstocks , being found within four inches of the surface . From the nodes there arise numerous small fibrous roots . The roots of many perennial plants , like Canada thistle , morning - glory , horse nettle , and milkweed ...
... cent of the rootstocks , being found within four inches of the surface . From the nodes there arise numerous small fibrous roots . The roots of many perennial plants , like Canada thistle , morning - glory , horse nettle , and milkweed ...
Página 16
... cent fields . In prairie coun- tries the tumble habit is common for many weeds , as shown many years ago Fig . 7. Bull thistle " seed " scat- by Dr. Bessey . The seeds of tered by the wind . milkweed with a light fluffy coma are carried ...
... cent fields . In prairie coun- tries the tumble habit is common for many weeds , as shown many years ago Fig . 7. Bull thistle " seed " scat- by Dr. Bessey . The seeds of tered by the wind . milkweed with a light fluffy coma are carried ...
Página 23
... 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 is an @ Fig . 19 . Seeds ...
... 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 is an @ Fig . 19 . Seeds ...
Página 27
... cent of impurity obtained . A more accurate way is to use the table given below . This method is fairly accurate . We have for a number of years checked these results with those determined by weighing . If the weighing method is used ...
... cent of impurity obtained . A more accurate way is to use the table given below . This method is fairly accurate . We have for a number of years checked these results with those determined by weighing . If the weighing method is used ...
Página 29
... cent of one teaspoonful or 4 grams of timothy seed . Analysis of Seed ( Approximate ) .— In making an analy- sis of ... cent . Therefore 120 seeds equal 120/182 of per cent , or .659 per cent , and since 57 seeds of buckhorn equals 1 per ...
... cent of one teaspoonful or 4 grams of timothy seed . Analysis of Seed ( Approximate ) .— In making an analy- sis of ... cent . Therefore 120 seeds equal 120/182 of per cent , or .659 per cent , and since 57 seeds of buckhorn equals 1 per ...
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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