| OCR Text |
Show 43. make his land a permanent asset of the greatest value, should sacrifice sary, in little a temporary gain, rotating crops scientifically. if it is He must do nature demands for his ultimate good (but that is ondary) and the of his good this is fundamental). sible and should,be great fertilizer, The country. nation, and as study and his yet is little of the never-ending problem, used. fertility and its sec are Sewage used as people (and All sorts of fertilizers constructively neces is posa in this of the soil is significance cannot a be over-emphasized. Mrs. Mary Huston Gregory in her well written "Checking that conservation the Waste," says, means the prevention of five billion dollars worth of soil being washed into the problem is at sea every year. nation's fortune every year, Of course, erosion is growths will do much to allay it. much used Systems hillside farms. oan costing the checked. be more easily on of trees and grasses Farmers should abolish the economically constructed Gullies should be Above all, Many times already over it of this rectangular farming, which aids erosion. of terraces may be coverings. and carried on far Abundant steep slopes. magnitude Erosion is apparent. once The the the on proteoted with grass forests should be retained. control maintained by the forests water and floods has been exemplified. |
