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That is expressed as a series of 3 figures that give The proportion (also known as “ratio” During this perception in the phrase) of each nutrient by excess weight. اتباع برنامج تسميد صحيح، وذلك لتقديم أقصى استفادة للنبات، وذلك لأن هناك بعض أنواع السماد التي تتعا