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Rice post harvest management-Bangladesh context 

Debashish Chanda, Ph.DPost Harvest & Business Model Specialist 

IRRI Bangladesh

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Why is Post-Harvest Management Important?

Food Safety

Quality assurance

Better storage

Better protection from pests

Reduce economic & physical losses

Better marketing opportunities

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Post harvest losses in Bangladesh

(Present scenario)

Production of Rice per year = around 30 million tons

Post harvest loss of Rice = 10 15 % per year (approx)

Post harvest loss of F & V = 30 40 % per year (approx)

In value losses (all crops) cost = around 30,000 crore BDT

If we can reduce these losses only 3% , we can save 1.0million tons food crops.

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Causes of post harvest losses

Generally these include:

Inefficient harvesting and handling methods

Labor shortage during harvest season

Harvesting immature and over-mature crops

Poor processing techniques

Limited drying facility

Excess rain-fall expose

Lack of storage facilities

Rough transportation/load/unload

No or poor access to new technology

No farmers friendly business model

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Post harvest steps

Harvesting

Threshing (and winowing)

Moisture control (drying)

Cleaning/grading

Bagging

Fumigation (for seed)

Storage

Parboiling & milling

Transportation

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Harvest Handling

Harvest in dry and sunny weather to avoid extra moisture

Harvest only in appropriate ripening stage (80%)

Use combined harvester if available/possible

Do not mix grain for milling with seed production

Take moisture measurement after harvesting

Use appropriate harvest tools

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Harvesting

Harvesting mainlymanually (almost 99%)

 Very rare use ofreapers and combinedharvesters

Combined harvester ismore appropriate and

cost effective

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Field drying

Panicle drying, usuallyfarmers dry their paddy2-3 days in the field

Dry up to 17-18%

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Threshing

Most of the farmersnow use mechanicalthresher like fullymechanized, open

drum thresher andpedal thresher

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Drying for storage

Drying traditionally

(sun drying)

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Mechanical dryer

Low-cost seed dryer

Flat bed dryer

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Cleaning & grading for seed

Pre-cleaning

Fine cleaning

Grading

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Storage

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Storage technology

IRRI Super bagCocoon

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Parboiling

Soaking

Parboiling

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Milling

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Post harvest flow chart 

HarvestingPre-drying

in fieldThreshing Winnowing Drying

StorageParboiling and dryingFor milling

Processing (precleaning, fine

Cleaning, grading)and fumigation

for seed

Harvesting

Packaging

MarketingMarketingUtilization by

consumer

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