A Practical Course in Botany, With Especial Reference to Its Bearings On Agriculture, Economics, And Sanitation
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In our eReader you can find the full English version of the book. Read A Practical Course in Botany, With Especial Reference to Its Bearings On Agriculture, Economics, And Sanitation 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 Practical Course in Botany, With Especial Reference to Its Bearings On Agriculture, Economics, And Sanitation
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To quickly assess the difficulty of the text, read a short excerpt:
Consider the value of forests in protecting crops from exces- sive evaporation by acting as wind breaks. Study the effect of the fall of leaves upon the formation of soil. In any undisturbed forest tract turn up a few inches of soil with a garden trowel and see what it is composed of.
Notice what kind of plants grow in it. Note the absence of weeds and account for it. Compare the appearance of trees scattered along windy hillsides, where the fallen leaves are constantly blown away, or in any po...sition where the soil is unrenewed, with those in an undisturbed forest, and then give an opinion as to the wisdom of hauling away the leaves every year from a timber lot.
(3) In Section VII, observe, in different kinds of leaf mosaics, the means by which the adjustment has been brought about and the purpose it sub- serves. Make a list of plants illustrating the two habits. Notice the form and position of petioles of different leaves, and their effect upon light ex- posure, drainage, etc., and the behavior of the different kinds in the wind.
What to read after A Practical Course in Botany, With Especial Reference to Its Bearings On Agriculture, Economics, And Sanitation?
You can find similar books in the "Read Also" column, or choose other free books by Andrews, Eliza Frances, B. 1840 to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Consider the value of forests in protecting crops from exces- sive evaporation by acting as wind breaks. Study the effect of the fall of leaves upon the formation of soil. In any undisturbed forest tract turn up a few inches of soil with a garden trowel and see what it is composed of.
Notice what kind of plants grow in it. Note the absence of weeds and account for it. Compare the appearance of trees scattered along windy hillsides, where the fallen leaves are constantly blown away, or in any po...sition where the soil is unrenewed, with those in an undisturbed forest, and then give an opinion as to the wisdom of hauling away the leaves every year from a timber lot.
(3) In Section VII, observe, in different kinds of leaf mosaics, the means by which the adjustment has been brought about and the purpose it sub- serves. Make a list of plants illustrating the two habits. Notice the form and position of petioles of different leaves, and their effect upon light ex- posure, drainage, etc., and the behavior of the different kinds in the wind.
What to read after A Practical Course in Botany, With Especial Reference to Its Bearings On Agriculture, Economics, And Sanitation?
You can find similar books in the "Read Also" column, or choose other free books by Andrews, Eliza Frances, B. 1840 to read onlineMoreLess
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