OBJECTIVE FORESTRY

Detailed explanation-1: -The primary nutrients are nitrogen (N), phosphorus (P), and potassium (K). These essential elements are required by plants in higher quantities than elements that fall into the other category. Additionally, each of these three elements perform crucial functions in plant biology.

Detailed explanation-2: -Nitrogen (N) Nitrogen is a key element in plant growth. It is found in all plant cells, in plant proteins and hormones, and in chlorophyll.

Detailed explanation-3: -Plants require at least 14 mineral elements for their nutrition. These include the macronutrients nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) and sulphur (S) and the micronutrients chlorine (Cl), boron (B), iron (Fe), manganese (Mn), copper (Cu), zinc (Zn), nickel (Ni) and molybdenum (Mo).

Detailed explanation-4: -Nutrients get into the soil many different ways: from decomposed animal waste and dead plants, the atmosphere, weathering of rocks and bacteria conversions. When soils are used to grow foods, the soils need to be kept healthy, as a lot of nutrients are taken up by plants and not replaced.