. The principles of agriculture, a text-book for schools and rural societies . iftyplant, other than aquatic plant, growing in a florists pot, andexclude all the air by keeping the soil saturated with water, oreven by keeping the bottom of the plant standing deep in water,and note the checking of growth, and, in time, the decline of theplant. The remarks on draining (65, 78) show how undrainedsoils are often saturated with water ; and no matter how muchraw material for plant-food may exist in such a soil, it is un-available to the plant. The reader can now guess why crops arepoor and yellow on
. The principles of agriculture, a text-book for schools and rural societies . iftyplant, other than aquatic plant, growing in a florists pot, andexclude all the air by keeping the soil saturated with water, oreven by keeping the bottom of the plant standing deep in water,and note the checking of growth, and, in time, the decline of theplant. The remarks on draining (65, 78) show how undrainedsoils are often saturated with water ; and no matter how muchraw material for plant-food may exist in such a soil, it is un-available to the plant. The reader can now guess why crops arepoor and yellow on flat lands in wet seasons. On the importanceof air in soils, read Chapter ix. of Kings Soil. 895. On the effects and necessity of tillage, read Chapter Roberts Fertility of the Land, and Chajjter xii. in KingsSoil. A most interesting diversion in this connection is aperusal of Jethro Tulls famous book on Horse-Hoeing Hus-bandry (53c). Copies of Cobbetts edition may frequently befound in antiquarian book stores. 91a. The trench left by the plow is a furrow. The earth. ^
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Keywords: ., bookcentury1900, bookdecade1910, bookpubl, booksubjectagriculture
