Contents Artificial Nutrition

Because of the intensity of cultivation in many regions of the world, notably among the larger producers of food and fiber crops (where there is repetitive use of the same tracts of land year after year), the uniformity of nutrient content, as may have been present in the virgin soil, cannot be assumed In fact, experience has shown that Ihe same soil class may vary widely in nutrient content from one field to the next. The ability of soils to provide plant nutrition is a reflection of how the soils have been artificially treated (fertilized and conditioned) over the remote and recent past and... 

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