HORTICULTURE

Detailed explanation-1: -Plants absorb nitrogen from the soil as both NH₄⁺ and NO₃⁻ ions, but because nitrification is so pervasive in agricultural soils, most of the nitrogen is taken up as nitrate. Nitrate moves freely toward plant roots as they absorb water.

Detailed explanation-2: -The three main nutrients are nitrogen (N), phosphorus (P) and potassium (K). Together they make up the trio known as NPK.

Detailed explanation-3: -Nitrogen is an essential macronutrient for plant function and is a key component of amino acids, which form the building blocks of plant proteins and enzymes. Proteins make up the structural materials of all living matters and enzymes facilitate the vast array of biochemical reactions within a plant.

Detailed explanation-4: -In fact, plants take up nutrients as ions. For example, the three major plant nutrients nitrogen (N), phosphorus (P), and potassium (K) are taken up by plant roots as follows. +, a cation) or nitrate (NO3 –, an anion). – or HPO4 2–, both anions. K is absorbed as K+, a cation.

Detailed explanation-5: -Uptake processes. Nutrients in the soil are taken up by the plant through its roots, and in particular its root hairs. Phosphorus. Potassium. Calcium. Magnesium. Micronutrients. Non-essential nutrients.