The concentration of macro nutrients in dry matter is
less than10mmole kg-1
excess of 10mmole kg-1
Elements that are present in the plant body in excess of _______ of dry matter are known as Macro-nutrients.
Assertion (A): Macronutrients are generally present in plant tissues in large amounts, in excess of 10 m mole kg−1 of dry matter.
Reason (R): Micronutrients are needed in very small amounts, less than 10 m mole kg−1 of dry matter.