Floating agriculture is a method used in Bangladesh where beds of rotting vegetation float on water and are used to grow crops. The floating beds are prepared using materials like bamboo, water hyacinth, and organic matter. Seeds are germinated in balls made of decaying plants that are placed on the beds. Vegetables are commonly grown, and the beds provide nutrients to the crops. Floating agriculture benefits food security and livelihoods in Bangladesh, but faces challenges from climate hazards, lack of knowledge, and scarce materials. With further research and investment, it has potential to increase food security in the face of climate change impacts.

1. Floating Agriculture :Application
and Prospect in Bangladesh
Presented by,
MD.IRTIJA RAIAN
Class Roll:Sh-60
Exam Roll:132690
Registration no:2018-426-692
Department of Soil, Water and Environment.
University of Dhaka.

2. • Introduction
• Preparation of Floating Bed
• Floating Beds in Bangladesh
• Methods used for seed germination
• Vegetables Cultivation on Floating Bed
• Nutrient status of the organic material in
Dhaps
• Biodiversity and ecosystem function in Dhaps
• Advantages and Disadvantages of the
technology
• Conclusion
PRESENTATION
OUTLINE

3. Introduction
 Floating agriculture is a way of producing food in areas that are
waterlogged for long periods of time.
The system employs beds of rotting vegetation that act as compost for
crop growth.
Floating agriculture is reasonably widespread in Bangladesh, specially
coastal areas and wetland haor areas.
About 60- 90% people in those areas are depended on this technique.

4. Preparation of Floating Bed
Floating bed requires
bamboo poles, a boat and
a simple tool.
Water hyacinth, aquatic
weeds and organic
materials like paddy
stubs, straw, and coconut
husk are used in bed
formation.
The size and shape of the
floating beds can vary
from region to region.
The space of open water
between two beds is kept
clear in order to ply small
boats for sowing, weeding
and harvesting.

5. Floating Beds in Bangladesh

6. Methods used for seed germination
Seeds are germinated in balls.
Balls are made of soft rotten Durali (Hygroryza
aristata) or Indurkani pana .
Which are dried in the sun for 3- 4 days to make
the ball ready.
Then seeds are inserted in the ball and covered
with rotten water hyacinth.
The balls are kept in a shade for 3-4 days and
balls are watered when they become dry.

7. Vegetables Cultivation on Floating Bed
Seedlings are grown on the floating beds maintaining some crop combinations
in various season.

8. Nutrient status of the organic material in Dhaps
Organic matter ranges from 20.76 to 42.88 percent.
Ammoniacal-nitrogen content ranges from 60 to 282 ppm against a critical value
of 150 for growing healthy vegetables.
Potassium is found in excess.
Phosphorus, manganese and iron are low.

9. Biodiversity and ecosystem function in Dhaps
Increase microbial diversity.
Conserve the aquatic diversity like Hyacinth,
Tepapana , Dalkulmi, aquatic insect etc.
Increase bird and fish diversity in the area.
Conserve the fisheries of a wetland.
Contribute to maintaining the agro-biodiversity.

10. Advantages of the technology
Increase food
security.
Prime nutrients
(N,P,K) are
abundant in
floating beds.
Water prevents
vermin, so no
pesticides are applied
in floating bed.
Increase
livelihood
security.
Less costly.

11. Disadvantages of the technology
Climatic hazards
such as flood,
intrusion of saline
water by swarm
spore etc.
Lack of
adequate
knowledge
about floating
farming.
Encouraging
insect and
rodent
infestation
Scarcity of raw
materials
(Bamboo, Straw,
Hyacinth etc.)

12. Conclusion
Floating agriculture demonstrates how an age-old natural-resource-based
solution can offer new dimensions to fight social challenges, such as climate
change - rising of sea levels and human socio-economic development. The
adaptability of floating agriculture in Bangladesh underscores its potential as
a sustainable model for food security within the climate uncertainties.
However, its long-term success requires continuous research, investment in
infrastructure and community engagement. In the near future, floating
agriculture will be one of the highest demandable agricultural method for
Bangladesh.

13. Thank you