Types of Fertilizers Overview

Which of the following are classified as macronutrients?

Organic fertilizers are synthetic compounds that are derived from living or formerly living materials.

What are the three main elements that are most important in plant nutrition?

Biofertilizers contain living microorganisms that exert direct or indirect beneficial effects on ______ growth and crop yield.

Match the following fertilizers with their respective categories:

Which of the following elements is NOT considered an essential mineral element for higher plants?

The principle of crop nutrition known as the 'Law of the Minimum' states that crop yields are directly proportional to the amount of the most abundant nutrient.

What are the two macronutrients that plants acquire directly from air and water?

A plant deficiency in ______ can lead to misshapen or stunted new leaves.

Match the following elements with their classification in plant nutrition:

Essential mineral elements can replace each other to support optimal plant growth.

Which of the following elements is NOT a macronutrient for higher plants?

What is the primary principle behind the 'Law of the Minimum' in crop nutrition?

Which of the following elements is NOT a primary macronutrient in fertilizers?

The Haber-Bosch process is an industrial nitrogen fixation process that converts atmospheric nitrogen into usable forms for plants.

What is the primary function of nitrogen in plant growth?

The chemical symbol for phosphorus is ______.

Which of the following fertilizer products is a compound fertilizer?

Match the nutrient deficiency symptoms with the corresponding nutrient:

Plants can directly utilize nitrogen gas from the atmosphere.

What is the source of phosphate in fertilizers?

Which of the following is NOT a raw material used in the production of NPK fertilizers?

Potassium contributes to plant health by regulating photosynthesis, nutrient uptake, and disease resistance.

What are the three major nutrients present in NPK fertilizers, and what are their corresponding roles in plant growth?

The grade of a fertilizer refers to the percentage of the three major nutrients: ______, ______, and ______.

Match the type of fertilizer with its characteristics:

Rock phosphate is a readily available form of phosphorus that plants can easily absorb.

Which of the following is an example of a potassium-based fertilizer?

Explain the difference between single superphosphate (SSP) and triple superphosphate (TSP).

The formula to calculate the amount of fertilizer material required is A = (Rx100)/______.

What is the recommended rate of phosphorus (P) needed for a 1 ha area if 50 kg of fertilizer (15-5-20) is used?

The continuous use of chemical fertilizers can improve soil organic matter (SOM) content.

What are the three main elements that are most important in plant nutrition, as represented by the N-P-K values in fertilizers?

Match the following fertilizers with their respective guaranteed analysis percentages:

What is the unit of measurement for the recommended rate (R) in the formula A = (Rx100)/C?

What is the primary cause of the decline in soil organic matter (SOM) content due to the continuous use of chemical fertilizers?

The overuse of chemical fertilizers can lead to ______ in the soil, reducing its fertility.

The direct application of fertilizers can lead to a pH imbalance in the soil.

Which of the following is a direct consequence of eutrophication caused by excess fertilizer runoff?

Excess fertilizer runoff can lead to the formation of harmful _______ in water bodies.

What are two ways farmers can reduce fertilizer runoff and minimize environmental pollution?

Match the health consequences with their potential association with excessive fertilizer use: