there are ___ nutrients essential for crops. of these, ___ are required in large quantities and are known as macronutrients whereas seven nutrients required in small quantities is known as___.
Essential nutrients: primary nutrients which support the growth of the plants.
Macronutrients: nutrients that are required in large quantities for plant growth and development, such as phosphorus, magnesium, potassium, nitrogen, calcium, and sulfur.
Micronutrients: nutrients that are required in trace quantities for plant growth such as molybdenum, manganese, chlorine, copper, boron, zinc, and iron.
Final answer: There are 13 nutrients essential for crops. of these, 6 are required in large quantities and are known as macronutrients, whereas seven nutrients required in small quantities are known as micronutrients.