post harvest training
TRANSCRIPT
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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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