This document discusses different types of fertilizers, including organic and inorganic fertilizers. Organic fertilizers come from plant and animal sources like manure, compost, and bone meal. They provide benefits like improving soil structure and aeration. However, they also have low nutrient concentrations and it can be difficult to determine application rates. Inorganic or synthetic fertilizers are manufactured chemicals identified by their nutrient percentages like 12-12-12. They contain fillers added during packaging to prevent drying and hardening.

2. Fertilizers
These are substances added to
the soil to enrich and increase
soil fertility.

3. Types of Fertilizers

4. -It is a type of fertilizer taken from plant
and animals sources such as manures,
compost, and bone meal.
-It is also called natural fertilizer.
Organic Fertilizers

5. Compost
-It is the decayed grass,
stalks, hays, rice hulls,
kitchen waste, and
animal manure.

6. Humus
-It is when a compost is
fully decomposed and
looks like a fine black
soil.

7. Advantages of Using Organic Fertilizer
1. It reduces soil hardening.
2. It widens the feeding zones of plants for food.
3. It provides better aeration. There will be spaces for
the free circulation of air.
4. It increases the water-holding capacity of the soil.
5. Organic matter furnishes food supply for beneficial
microorganisms in the soil. It adds fertility to the soil.

8. Disadvantages of Using Organic Fertilizer
1. Usually have plant nutrients in low concentration,
thus it takes longer time for these nutrients to used
by plants.
2. It I hard to determine how much fertilizer to use in a
given area.

9. Inorganic Fertilizer
- These are also known as commercial or synthetic
fertilizers.
- These types of fertilizers are made from chemicals
that underwent manufacturing process.
- These are identified by a combination of numbers like:
1-1-14, 12-12-12, 12-24-12, and 15-15-15.

10. Fillers
- These are inactive ingredients added to the fertilizer’s
packaging to keep it from drying out, hardening, and
changing.
- Examples of it are sand and granular limestone.

11. N – Nitrogen -19%
P – Phosphorus -19%
K – Potassium -19%