8. OBJECTIVES
Identify the common types of
fertilizer used in aquaculture
Calculate the fertilizer requirements for
a given aquaculture pond on specific
parameters.
Show appreciation on the importance of
correct fertilizer requirement applied in
pond.
10. Direction:
1. The teacher will provide information sheets to each Group.
2. Each Group will create a concept map from the information sheets provided by the teacher.
3. Each group will be given 10 minutes to do the activity.
4. Each group will choose a member to present their outputs.
5. The outputs of each group are rated according to the rating rubrics.
Criteria 3 2 1
Promptness
The group who finished
the activity on or before
the given time.
The group who finished
the activity 3 minutes af
ter the given time.
The group who finished the
activity more than 5 minute
s the given time.
Cooperation
All the members actively
participated in performi
ng the activity.
1 member did not
actively participate.
More than 1 member
did not actively
participate.
Accuracy
All the answers are
correct.
One answer is not
correct.
More than one answers
are not correct.
11.
12. Types of Fertilizer and Its Advantages and Disadvantages
1.Organic Fertilizer
are fertilizers that are naturally produced and co
ntain carbon (C). Typical organic fertilizers include mi
neral sources, all animal waste including meat proce
ssing, manure, slurry, and guano, plant based fertiliz
ers, such as compost, and bio-solids. Ex: cow dung,
pig manure, poultry wastes, carabao manure, compo
st, green grass.
13. Types of Fertilizer and Its Advantages and Disadvantages
Advantages:
Contains nutritive substances indispensable for the biolo
gical cycle.
Favorable actions in the soil structure.
Favorable action on the development of zooplankton.
14. Types of Fertilizer and Its Advantages and Disadvantages
2. Inorganic fertilizer
is synthetic, artificial and commercial fertiliz
er comprised of minerals and synthetic chemicals.
Most of the minerals in inorganic fertilizer are min
ed from the earth, and balanced inorganic fertilizer
s are high in all three macronutrients and can cont
ain ammonium sulfate, magnesium sulfate, and po
tassium chloride
15. Types of Fertilizer and Its Advantages and Disadvantages
Advantages:
It will give immediate effect in terms of phytoplankton production even with
small quantity.
Available in the market.
Dissolved nutrients become readily available for phytoplankton.
Disadvantages:
Gets easily in the mud, soil; hence, nutrients are lost.
Expensive
16. Kinds of Inorganic Fertilizer as to Nutrient Composition
a. Single fertilizer- contains only one element
Example: Urea (45-0-0)
Superphosphate (0-20-0)
Ammonium sulfate (21-0-0)
b. Incomplete fertilizer- contains two element
Example: Mono ammonium phosphate (16-20-0),
Diamonium phosphate (18-46-0)
c. Complete fertilizer- contains 3 major elements (nitrogen, phosphorus, and potassium)
Example: Triple 14 (14-14-14) Triple 12 (12-12-12).
17. Formula of Computing Fertilizer Requirement
Amt. of Fertilizer = Rate of Application X Area
Example:
The total production area is 0.8 hectare (ha). How much chicken manure is
needed if the application rate is 2.0 ton/ha?
Solution:
Amt. of Fertilizer = Rate of Application X Area
= 2.0 ton/ha x 0.8 ha
Amt. of Fertilizer = 1.6 ton
