A Unit in Agriculture
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In our eReader you can find the full English version of the book. Read A Unit in Agriculture Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book A Unit in Agriculture
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To quickly assess the difficulty of the text, read a short excerpt:
Soil Temperature.
Review Exercise 19. Which of the soils was warmest? What coldest ? In the same jar of soil insert two thermometers, one to the depth of 2 inches and one 6 inches. Do you notice any difference in the temperature shown? Try this experiment out of doors and note the temperature of the air as shown by the third thermometer sus- pended a foot above the ground. Make three observations the same day, one at 8:00 a. M. , one at 2:00 p. M. And one at 6:00 p. M. Is the surface of the soi...l warmer or colder than the air? Is this true of all times of the day? If not, when? Is the average temperature of the surface soil higher or lower than the average temperature of the air? Which is more nearly uniform, the temperature of the air, the surface soil or the soil at a depth of 6 inches? Do you know whether each of your conclusions above will hold for different seasons of the year? Should seeds be planted deeper or shallower in early spring or late spring? Why?
Ex. 27. Soil Drainage.
Take two flower pots the same size and label them 1 and 2 re- spectively.
What to read after A Unit in Agriculture?
You can find similar books in the "Read Also" column, or choose other free books by Joseph Doliver Elliff to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Soil Temperature.
Review Exercise 19. Which of the soils was warmest? What coldest ? In the same jar of soil insert two thermometers, one to the depth of 2 inches and one 6 inches. Do you notice any difference in the temperature shown? Try this experiment out of doors and note the temperature of the air as shown by the third thermometer sus- pended a foot above the ground. Make three observations the same day, one at 8:00 a. M. , one at 2:00 p. M. And one at 6:00 p. M. Is the surface of the soi...l warmer or colder than the air? Is this true of all times of the day? If not, when? Is the average temperature of the surface soil higher or lower than the average temperature of the air? Which is more nearly uniform, the temperature of the air, the surface soil or the soil at a depth of 6 inches? Do you know whether each of your conclusions above will hold for different seasons of the year? Should seeds be planted deeper or shallower in early spring or late spring? Why?
Ex. 27. Soil Drainage.
Take two flower pots the same size and label them 1 and 2 re- spectively.
What to read after A Unit in Agriculture?
You can find similar books in the "Read Also" column, or choose other free books by Joseph Doliver Elliff to read onlineMoreLess
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