TAILIEUCHUNG - FORMATION AND CHARACTER OF THE SOIL

In the foregoing section, we have studied the character of plants and the laws which govern their growth. We learned that one necessary condition for growth is a fertile soil, and therefore we will examine the nature of different soils, in order that we may understand the relations between them and plants. What is a fixed character of | FORMATION AND CHARACTER OF THE SOIL What is a necessary condition of growth In the foregoing section we have studied the character of plants and the laws which govern their growth. We learned that one necessary condition for growth is a fertile soil and therefore we will examine the nature of different soils in order that we may understand the relations between them and plants. What is a fixed character of soils How is the chemical character of the soil to be ascertained What do we first learn in analyzing a soil How do the proportions of organic or inorganic parts of soils compare with those of plants Of what does the organic part of soils consist The soil is not to be regarded as a mysterious mass of dirt whereon crops are produced by a mysterious process. Well ascertained scientific Pg 66 knowledge has proved beyond question that all soils whether in America or Asia whether in Maine or California have certain fixed properties which render them fertile or barren and the science of agriculture is able to point out these characteristics in all cases so that we can ascertain from a scientific investigation what would be the chances for success in cultivating any soil which we examine. The soil is a great chemical compound and its chemical character is ascertained as in the case of plants by analyzing it or taking it apart. We first learn that fertile soils contain both organic and inorganic matter but unlike the plant they usually possess much more of the latter than of the former. In the plant the organic matter constitutes the most considerable portion of the whole. In the soil on the contrary it usually exists in very small quantities while the inorganic portions constitute nearly the whole bulk. Can the required proportion be definitely indicated From what source is the inorganic part of soils derived Do all soils decompose with equal facility How does frost affect rocks Does it affect soils in the same way The organic part of soils consists of the same .

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