Courses in Agriculture for the Secondary Schools of Texas
Courses in Agriculture for the Secondary Schools of Texas
Walter Francis Doughty
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Black prairie soils. 9. Vegetable or swamp soils. 10. Study each of the above named soil types according to the following outline: a. Where found. b. Peculiar characteristics. c. Agricultural importance. d. Crops best adapted to it. VTT. Clashes of soils with reference to moisture: arid; semi-arid: humid. VIII. Study each of the above named soils as follows : a. Where found. b. Natural vegetation. c. Kind of farming. d. Agricultural importance. e. Land values in each section. IX. Soil moisture.... 1. Kinds of soil moisture. a. Gravitational. b. Capillary. c. Hygroscopic. 2. Uses of soil moisture. a. Dissolves mineral plant foods and renders them available for plants. b. Transfers plant foods from soil to plant. c. Principal component of circulatory fluid of plants. d. Eegulates soil temperature. e. Regulates plant temperature. 3. Water capacity of different types of soils. 4. Amount of water required by different crops. % 5. Methods of controlling soil moisture-. a. Best methods of conserving moisture.
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