rice post harvest management- bangladesh context debashish chanda, ph.d post harvest & business...
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![Page 1: Rice post harvest management- Bangladesh context Debashish Chanda, Ph.D Post Harvest & Business Model Specialist IRRI Bangladesh](https://reader035.vdocuments.mx/reader035/viewer/2022062520/5697c00b1a28abf838cc86fa/html5/thumbnails/1.jpg)
Rice post harvest management-Bangladesh context
Debashish Chanda, Ph.DPost Harvest & Business Model Specialist
IRRI Bangladesh
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Why is Post-Harvest ManagementImportant?
Food Safety
Quality assurance
Better storage
Better protection from pests
Reduce losses (quantity & quality)
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 1.0 million 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 (cutting – field drying – hauling)
Stacking/Piling - Threshing (and winnowing)
Moisture control (drying)
Fine cleaning (for seed)
Bagging
Fumigation (for seed)
Storage (paddy storage)
Parboiling & milling
Transportation - Marketing
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Harvest Handling
Harvest in dry and sunny weather to avoid extra moisture
Harvest only in appropriate ripening stage (80-85%)
Use combine harvester if available/possible
Do not mix grain for milling with seed production
Take moisture measurement after harvesting
Avoid delays in threshing and drying after harvesting
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Harvesting
Harvesting mainly manually (almost 99 %)
Very rare use of reapers and combine harvesters
Combine harvester is more appropriate and cost effective
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Field drying
Leaving the cut crop in the field and exposing it to the sun for drying
Panicle drying, usually farmers dry their paddy 2-3 days in the field
Dry up to 17-18%
For seed its better thresh after cutting and then dry
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Threshing
Most of the farmers now use mechanical thresher like fully mechanized open drum power thresher and pedal thresher
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Drying for storage
Drying traditionally (sun drying)
Use bite test to get m/c
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Mechanical dryer
Low-cost seed dryer Flat bed dryer
Mechanical dryer
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Cleaning & grading for seed
Pre-cleaning(for both seed and milling)
Fine cleaning(for seed)
Grading(for wheat, barley, maize, etc)
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Storage
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Storage technology
IRRI Super bagCocoon
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Parboiling
Parboiling (5-10 min)
Soaking (min 12 hours)
Parboiling (5-10 min)
Drying (12% - 16%)
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Milling
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Post harvest flow chart
Harvesting
Pre-drying in field
Threshing Winnowing Drying
StorageParboiling and drying For milling
Processing (pre cleaning, fine
Cleaning, grading)and fumigation
for seed
Harvesting
Packaging
MarketingMarketingUtilization by
consumer
Hauling
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