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Not all fertilizers contain potassium. A lot are built to Increase foliage, and so consider nitrogen. Other folks address much more distinct deficiencies or choose to offer only micro-nutrients in its place.يلعب النيتروجين دورًا حيويًا في تشجيع نموّ أوراق الأشجار بشكل صحيّ، وذلك من خل