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NTA AbhyasNTA Abhyas 2020Mineral Nutrition
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Macronutrients (macro-elements or major-elements) are required by plants in larger amounts (generally present in the plant tissues in concentrations of 1 to 10mg/gram of dry matter). Carbon, hydrogen, nitrogen, oxygen, phosphorous, potassium, calcium, sulfur, and magnesium are the nine macroelements in plants.