INORGANIC FERTILIZERS

Macro-nutrients. Nitrogen.
Phosphorus. Potassium.

By the end of the lesson, the learner should be able to:



To identify plants macronutrients.
To classify macro-nutrients as fertilizers and liming elements.


To identify role of nitrogen in plants.
To state symptoms of nitrogen deficiency in plants
To identify role of phosphorus in plants.
To state symptoms of phosphorus deficiency in plants.

To identify role of potassium in plants.
To state symptoms of potassium deficiency in plants.

List down macro- elements.
Q/A: Definition of an ion; expose ionic form of elements.

Discuss, giving examples the role of nitrogen and the deficiency symptoms.
Discuss, giving examples the role of phosphorus and the deficiency symptoms of phosphorus.


Discuss, giving examples the role of potassium and the deficiency symptoms.

Yellowish-green / brown leaves.
Purple flowers.




Curled leaves,
Chlorotic leaves.

KLB BK II
1-2
KLB BK II
Pgs 2-3

INORGANIC FERTILIZERS

Phosphorus. Potassium.

By the end of the lesson, the learner should be able to:
To identify role of phosphorus in plants.
To state symptoms of phosphorus deficiency in plants.

To identify role of potassium in plants.
To state symptoms of potassium deficiency in plants.

Discuss, giving examples the role of phosphorus and the deficiency symptoms of phosphorus.


Discuss, giving examples the role of potassium and the deficiency symptoms.

Purple flowers.




Curled leaves,
Chlorotic leaves.

KLB BK II
Pgs 2-3

INORGANIC FERTILIZERS

Magnesium. Calcium.

By the end of the lesson, the learner should be able to:
To identify role of magnesium in plants.
To state symptoms of magnesium deficiency in plants.
To identify role of calcium in plants.
To state symptoms of calcium deficiency in plants.

Discuss, giving examples the role of magnesium and the deficiency symptoms.

Discuss, giving examples the role of calcium and the deficiency symptoms.

Thin stems with reduced nodulation.

Tomatoes with blossom end rot.

KLB BK II Pgs 4-5

INORGANIC FERTILIZERS

Sulphur. Carbon, Hydrogen & Oxygen.

By the end of the lesson, the learner should be able to:
To identify role of sulphur in plants.
To state symptoms of sulphur deficiency in plants.


To explain the photosynthetic role of carbon, hydrogen and oxygen.

Discuss, giving examples the role of sulphur and the deficiency symptoms.



Briefly highlight the role of carbon, hydrogen and oxygen in photosynthesis.

crop leaves

Pg 5

INORGANIC FERTILIZERS

Micro-nutrients.

By the end of the lesson, the learner should be able to:
To identify plants micronutrients and state their roles.
To identify deficiency symptoms of minor nutrients in plants.

Q/A: Compare micronutrients with macronutrients hence define a micronutrient.
Exposition: Teacher gives examples of micronutrients and exposes their roles and deficiency symptoms.

Chart: Macronutrients,
micronutrients,
their ionic forms and deficiency symptoms.

Pg 6

INORGANIC FERTILIZERS

Classification of Fertilizers. Straight and compound fertilizers.

By the end of the lesson, the learner should be able to:
To identify criteria used to classify inorganic fertilizers.

To distinguish between straight and compound fertilizers.
To give examples of:
- Straight fertilizers.
- Compound fertilizers.

Teacher briefly exposes the classification criteria.

Detailed discussion.
Teacher presents the fertilizers and helps students to identify them.

CAN
ASN
SA
DAP, MAP, Urea.

KLB BK II Pg 8

INORGANIC FERTILIZERS

Nitrogenous fertilizers.

By the end of the lesson, the learner should be able to:
To state characteristics of nitrogenous fertilizers.

Group experiments- Dissolving nitrogenous fertilizers in water.
Discussion: Other characteristics of nitrogenous fertilizers.
Giving examples of nitrogenous fertilizers.

(NH4)2 SO4

ASN

KLB BK II Pg 9-10

INORGANIC FERTILIZERS

Nitrogenous fertilizers.

By the end of the lesson, the learner should be able to:
To state characteristics of nitrogenous fertilizers.

Group experiments- Dissolving nitrogenous fertilizers in water.
Discussion: Other characteristics of nitrogenous fertilizers.
Giving examples of nitrogenous fertilizers.

(NH4)2 SO4

ASN

KLB BK II Pg 9-10

INORGANIC FERTILIZERS

Phosphatic fertilizers.
Potassic fertilizers.

By the end of the lesson, the learner should be able to:
To state characteristics of phosphatic fertilizers.
To give examples of phosphatic fertilizers.
To state characteristics of potassium fertilizers.
To give examples of potassium fertilizers.

Group experiment: Dissolving SSP in water and carrying out litmus tests.
Discuss further properties of SSP, DSP, TSP.

Group experiments: Solubility in water, litmus tests.
Discuss properties of KCl, K2SO4.

SSP
DSP
TSP
KCl
K2SO4

 KLB BK II Pg 1-12
PKLB BK II g 11-12

INORGANIC FERTILIZERS

Fertilizer Application.

By the end of the lesson, the learner should be able to:
To describe methods of fertilizer application.

Q/A: Teacher elicits responses on methods of fertilizer application.
Brief discussion of the methods highlighted.
Q/A: Advantages and disadvantages of each method.

KLB BK II Pg 12-13

INORGANIC FERTILIZERS

Fertilizer Application.

By the end of the lesson, the learner should be able to:
To describe methods of fertilizer application.

Q/A: Teacher elicits responses on methods of fertilizer application.
Brief discussion of the methods highlighted.
Q/A: Advantages and disadvantages of each method.

KLB BK II Pg 12-13

INORGANIC FERTILIZERS

Fertilizer Rates.

By the end of the lesson, the learner should be able to:
To determine % of nutrient(s) of a fertilizer.
To calculate fertilizer ratio.
To find the amount of fertilizer required per unit area (hectare).

Problem solving and explanations.
Worked examples.
Supervised practice.

chart

KLB BK II Pg 14-15

INORGANIC FERTILIZERS

Fertilizer Rates.

By the end of the lesson, the learner should be able to:
To determine % of nutrient(s) of a fertilizer.
To calculate fertilizer ratio.
To find the amount of fertilizer required per unit area (hectare).

Problem solving and explanations.
Worked examples.
Supervised practice.

chart

KLB BK II Pg 14-15

INORGANIC FERTILIZERS

Carbon cycle and Nitrogen cycle.

By the end of the lesson, the learner should be able to:
To explain ways in which carbon / nitrogen is removed / returned to the atmosphere.

Assignment method / Group discussion.

Charts: Carbon cycle
Nitrogen cycle.

KLB BK II Pg 16-20

INORGANIC FERTILIZERS

Soil Sampling.
Soil Testing.

By the end of the lesson, the learner should be able to:
To define soil sampling.
To state methods of sampling soil.
To describe soil sampling procedures.

To define soil testing.
To explain importance of soil testing.
To test soil pH.
To explain effect of soil pH on crops.

Expositions &
Detailed discussion.
Q/A: Definition and importance of soil testing.
Q/A: Definition of pH in terms of acidity / alkalinity.
Class standard experiments: Determining soil pH.
Discussion: Optimum pH range for crops.

Charts: Transverse and ziz-zag soil sampling methods.
Litmus paper, indicators, pH colour chart.

KLB BK II Pg 20-22
KLB BK II Pg 22-24

INORGANIC FERTILIZERS

Soil Testing.

By the end of the lesson, the learner should be able to:
To define soil testing.
To explain importance of soil testing.
To test soil pH.
To explain effect of soil pH on crops.

Q/A: Definition and importance of soil testing.
Q/A: Definition of pH in terms of acidity / alkalinity.
Class standard experiments: Determining soil pH.
Discussion: Optimum pH range for crops.

Litmus paper, indicators, pH colour chart.

KLB BK II Pg 22-24

INORGANIC FERTILIZERS

Soil Testing.

By the end of the lesson, the learner should be able to:
To define soil testing.
To explain importance of soil testing.
To test soil pH.
To explain effect of soil pH on crops.

Q/A: Definition and importance of soil testing.
Q/A: Definition of pH in terms of acidity / alkalinity.
Class standard experiments: Determining soil pH.
Discussion: Optimum pH range for crops.

Litmus paper, indicators, pH colour chart.

KLB BK II Pg 22-24