Agricoltura produttiva . Fig. 14.-campioni Di Semi in caso di legno, bottiglie tenute in posizione con shoestring.(.Agricoltura Jiducation.) aiutare a distruggerli. Quando un campo di fieno è arato e arrowedfor mais, quasi tutti i tipi di erbacce perenni sono uccisi. Esempi di perennials sono: Canada thistle, capanna erba, Johnson erba, ricciolo o bacino giallo, smart-weed, dandeUon (Fig. 105), alghe d'oro, alghe, nutsege, daisy bue-eye, taillee costola-erba, pianta a foglia larga, piaghe rosso, lino toad, cerotti bianchi e viola, aglio Avild, cicoria. Esercizio. - Raccolta Dei Campioni pesati. - nella fal

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Productive farming . Fig. 14.—Seed samples in wooden case, bottles held in place with shoestring.(.Agricultural Jiducation.) help destroy them. When a hay-field is plowed and harrowedfor corn, nearly all kinds of perennial weeds are killed. Examples of perennials are: Canada thistle, quack orcouch grass, Johnson grass, curled or yellow dock, smart-weed, dandeUon (Fig. 105), golden hawkweed, milk-weed, nutsedge, ox-eye daisy, rib-grass plantain, wide-leaved plan-tain, red field sorrel, toad flax, white and purple fall asters, Avild garlic, chicory. Exercise.—Collecting Weed Specimens.—In the fall ofthe year a collection of weeds should be made by the student.One set of the specimens should be kept at the school. Theymay be dried by spreading out the plants between large PLANT IMPROVEMENT, GOOD SEED 31 folded newspapers. Put the pile of papers and plants onthe floor; place over them a board and stone or other heavyobject. This pressuie will drive the moisture from the plants. Fig. 15.—Seeds mounted in holes in a wooden board and covered with glass.They are arranged by colors to aid in identifying other seeds. (AgriculturalEducation.) into the papers. Change the papers from day to day untilthe plants feel quite dry. They may then be fastened tosheets of paper or cardboard eleven by seventeen inches.Find the names of the weeds from any one who knows them, 32 PRODUCTIVE FARMING group them into annuals, biennials, and perennials. U.S. Far-mers Bulletin 28 will be of much help in the study of weeds.Exercise.—Seed Collection.—Let the pupils bring toschool in the fall such weed seeds as they can find upon theknown weeds. These may be carried in small papers or oldenvelopes on which the name of the plant is written. Thesemay be transferred to small bottles as in Fig. 14, or to holesin a seed board made like the one shown in Fig. 15. A col-lection of farm and garden seeds should also be made forthe school to use. REVIEW. 1. Tell of the value of sifting and fa

Parole chiave associate all'immagine

• bookcentury1900
• bookdecade1910
• bookidcu
• booksubjectagriculture