The document outlines seedling production processes for vegetable crops, focusing on seed testing, soil media preparation, and soil sterilization techniques using a rice hull carbonizer. It details materials needed, sterilization procedures, and the importance of proper soil and media mixtures to prevent diseases and promote healthy seedling growth. Additionally, it emphasizes the significance of hygiene and the characteristics of ideal seedlings for transplanting.

1. SEEDLING PRODUCTION
OF
VEGETABLE CROPS
BY: MR. ANDRELORD GERON MEDINA

2. SEED TESTING METHODS
Seed testing is the process of determining the viability of the seed
being harvested by germination and implementing the methods
involve on pre-germination
processes.

6. Soil Media Preparation
Soil Sterilization
Weed control
Kills disease causing M.O
To avoid infestations of insect pest and
nematodes.

7. SOIL STERILIZATION USING RICE HULL CARBONIZER

8. January 6, 2012
Page:00
SOIL STERILIZATION USING CARBONIZER

9. 1.5 m 1.2m
CONCREATE FENCE
•Construct a fence using
hollow blocks to serve
as container.
•The size of the fence is
1.5m X 1.5m with 1.2m
height.
•Make a hole (2’’ dia.) to
served as breather
during burning.

10. G.I sheet as
stopper at the
opening of the
fence (75cm X
120cm(
4 pcs G.I pipe as
breather ( 1 ½” X 2
ft)
2 pcs empty can of
1 kg powdered milk
( served as mini
carbonizer on the
top potion)
Rice hull
carbonizer
available at
PhilRice (can
be fabricated)
MATERIALS INCLUDED FOR 1 SET OF STERILIZER

11. Materials needed:
1.Rice hull
2.Lighter/matches
3.Small pieces of fire woods/old papers or any
materials that can burn as starter
4.Small amount of diesoline as starter
5.Shovel
6.Soil mixture for sterilization (1:1 ratio of garden
soil and sand)
MATERIALS

12. PROCEDURES DURING STERILIZATION
1. Put rice hull at the flooring with 10cm thick.
2. Make a fire at the center using small pieces
of woods and scratched paper/plastic, put
small amount of diesoline to hasten the
firing.
3. Put the carbonizer when the burning start to
progress.
4. Put the stopper ( G.I Sheet).
5. Insert G.I. pipe inside the hole ( breather).
6. Add rice hull up to 40 cm thick. Make sure
that the burning inside the carbunizer
continue.
7. Put the soil to be sterilized at around 40 to
60 cm thick.
8. Put another layer of rice hull on top of the
soil with 20 to 40 cm thick.
9. Put the mini carbonizer (empty can) in the
layer of rice hull and make a fire inside of it
to burn the rice hull.

13. 1. It will take around 24 hours to
complete the sterilization process.
2. After 24 hours and when the smoke
coming out from the chimney of the
Carbonizer stop, the soil can now
be taken out in the container.
3. Remove ash on the top of the file.
4. Pulled up the stopper (G.I. sheet)
and take out the soil and the
carbonized rice hull at the bottom of
the file.
5. Mix the sterilized soil and the
carbonized rice hull or saw dust.
6. Put the mixture in a plastic bag and
sealed.
7. Around 1 to 1.5 cubic meter of
sterilized mixture can get from one
set of sterilization.
8. In the preparation of soil media for
seed sowing, one part of the soil
mixture plus one part of peat moss
can be use.
PROCEDURES AFTER STERILIZATION

14. SOIL MEDIA
PREPARATION
Without Rice Hull
Carbonizer

15. a. Select light soil preferably loamy type as
source of soil media. If the soil is clay, you will
need to have different ratio (more rice hull
ash).
b. Plow or rotavate the soil especially if it is
compact to make it friable for better
sterilization.
c. Apply enough water to moisten the soil for
better heat penetration during sterilization.

16. d. Cover it with dry rice hull to a depth of 60-90 cm.
Burn piled rice hull to sterilized the soil and kill weed
seeds. If the burning is longer, sterilization is better.

17. Collect partially burnt (carbonized) rice hull
or saw dust for mulching.

18. The sterilized soil are collected at a depth of
12 inches maximum and pulverized.

19. e. Sieve sterilized soil to remove clods and stones to avoid
clogging during tray filling.
f. Collect soil and mix with
rice hull ash properly.

20. 1 part of Sterilized Soil + 2 parts of Rice
Hull Ash/Carbonized Rice Hull (1:2 Ratio)
for silt loam soil
Disadvantages of improper soil media
mixture:
1. More soil than the recommended ratio
will hold more moisture – susceptible
to diseases and algae occurrence
2. Easily compacted – harder and less
root formation
3. More ash – easily dry, requires
frequent watering, poor root
formation

21. g) Mix sterilized soil and rice
hull ash/ carbonized rice hull
thoroughly.
Mixture of 1 part sterilized
soil and 2 parts rice hull
ash. (SOIL MEDIA)

23. a) Ensure that trays are perfectly clean.
Disinfect trays with
fungicide and
Disinfectant (Zonrox).
Hygiene is the first
defense against
diseases.

24. Stack of clean trays with plastic on the floor

25. b) Place clean plastic on the floor as matting to avoid
contamination of soil media. Fill the tray with the soil media
properly.
c) Pat lightly, DO NOT
COMPACT. Scrape excess
soil media.
Filled Trays

27. 1. Prick seedlings with relatively uniform in size
– 4-5 leaf stage.
2. Prick seedlings that are disease-free.
3. Prick seedlings that have well developed root
system.
What are ideal seedlings for
pricking?

28. Seedling size ideal for pricking

29. GOOD PRICKING

30. GOOD PRICKING

31. Pricked trays laid perfectly in the bed

33. THANKYOU