කලාව
රූපලාවණ්ය සහ සුවතාව
ශිල්පය
සංස්කෘතිය සහ ඉතිහාසය
විනෝදාස්වාදය
පරිසරය
ආහාර සහ පාන
ප්රතිලෝම ඉංජිනේරු
විද්යාවන්
ක්රීඩා
තාක්ෂණය
පැළඳිය හැකි
English
Jute Harvesting and Retting — Extracting Jute Fiber in Bangladesh
Detailed instructions on cultivation, harvesting, retting, and fiber extraction of jute (Corchorus capsularis and Corchorus olitorius) in Bangladesh. Bangladesh produces approximately 33% of the world's total jute. Jute grows in warm, humid climates, is sown in March-May and harvested in July-September. This blueprint describes every step including jute identification, determining harvest time, bundling, selecting retting sites, the retting process, fiber separation, washing, drying, grading, and storage.
මධ්යම
3-5 days (including retting)
උපදෙස්
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Understanding the Jute Plant
Understanding the Jute Plant
Jute is a fiber crop of the genus Corchorus. There are two main species: tossa jute (Corchorus olitorius) and white jute (Corchorus capsularis). Tossa jute is golden in color, stronger, and smoother — it is called the Golden Fiber. White jute is comparatively coarser and less lustrous. Bangladesh produces approximately 33% of the world's total jute and is the second largest jute-producing country in the world. The jute plant grows 2-4 meters tall and fiber is extracted from its bark.
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Understanding Jute Land and Climate Requirements
Understanding Jute Land and Climate Requirements
Jute grows best in hot and humid climates. A temperature of 24-37 degrees Celsius and relative humidity of 70-90% are required. Annual rainfall of 1500-2500 mm yields good harvests. Low-lying alluvial soil rich in silt (silty loam) is ideal for jute — the Ganges-Brahmaputra-Meghna delta in Bangladesh is the best in the world for this reason. Seeds are usually sown in March-May (Chaitra-Baishakh).
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Determining the Harvest Time
Determining the Harvest Time
The jute plant is ready for harvesting 120-150 days after sowing, usually in July-September (Shraban-Bhadra). Signs of the right time: small flowers begin to bloom (yellow on tossa jute, white on white jute). Harvesting at the onset of flowering yields the best fiber quality — soft, smooth, and strong. Delaying too long makes fiber hard and coarse.
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Cutting the Jute Plants
Cutting the Jute Plants
Jute plants are cut close to the ground (2-5 cm above soil level) in a single stroke with a sharp sickle (da). Morning is best — less sun intensity and worker fatigue. Cut plants are left in the field 2-3 days for leaves to fall off, which reduces water pollution during retting.
අවශ්ය මෙවලම්:
Steel Sickle5
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Bundling the Jute Plants
Bundling the Jute Plants
After leaves have fallen, jute plants are tied into small bundles of 20-30 plants. Butt ends are aligned evenly. They are tied tightly near the base with jute bark or rope. Bundles too large cause uneven retting since water cannot reach inner plants. Each bundle should be hand-carryable.
මෙම පියවර සඳහා ද්රව්ය:
Jute Twine1 මිටිය6
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Selecting the Retting Site
Selecting the Retting Site
For retting, select a clean water body with slow current — ponds, canals, wetlands, or calm river sections. Water depth must be at least 1-1.5 meters. Clean, slightly acidic water (pH 6-7) gives better results. Stagnant polluted water causes poor fiber color and odor. Sunlit open water bodies are preferable as temperature accelerates bacterial activity.
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Retting the Jute
Retting the Jute
Bundles are completely submerged in water, weighted down with wooden logs, banana stems, or earthen weights. The retting process takes 10-20 days depending on temperature and water quality. Warm water (30-34 degrees Celsius) accelerates the process. Clostridium and other anaerobic bacteria break down pectin and lignin, loosening fiber from the woody core (pith).
මෙම පියවර සඳහා ද්රව්ය:
Banana Stem Weights5 කැබලි8
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Checking the Retting Progress
Checking the Retting Progress
From 8-10 days after retting, check progress daily. Lift a plant and pull the bark at the butt end — if it separates easily from wood, retting is complete. Over-retting weakens fiber and darkens color. Under-retting leaves woody pieces attached. Cessation of surface bubbles signals completion.
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Stripping the Fiber
Stripping the Fiber
Once retting is complete, bundles are lifted from water. The worker stands waist-deep and pulls bark from each plant's butt end. Fiber comes out like long threads. The woody core (shola/pith) is discarded. Fiber is rinsed by shaking in water to remove residual pectin and wood particles. A skilled worker strips 25-30 kg raw fiber per day.
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Washing the Fiber
Washing the Fiber
Stripped fiber must be thoroughly washed in clean water 2-3 times. Submerging and shaking by hand removes dirt, residual pectin, and mud. Well-washed fiber takes on a bright golden color — a sign of high quality. Foul-smelling or darkish fiber is considered low quality.
මෙම පියවර සඳහා ද්රව්ය:
Distilled Water (1 Liter)50 ලීටර්11
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Drying the Fiber
Drying the Fiber
Washed fiber is dried in the sun, hung on bamboo frames or ropes for air circulation. Direct sunlight for 2-3 days fully dries the fiber. Never dry on the ground — soil contamination reduces quality. Cover during rain. When moisture drops below 12-14%, fiber is ready for storage.
අවශ්ය මෙවලම්:
Bamboo Drying Frame
Hanging Rope12
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Grading the Fiber
Grading the Fiber
Dried fiber is classified by quality using two grading systems: Bangla White (BW) for white jute and Bangla Tossa (BT) for tossa jute. Criteria: color (bright golden is best), strength, smoothness, cleanliness (woody particles/dirt), and length (longer is more valuable). BT-A and BW-A are the highest grades.
අවශ්ය මෙවලම්:
Sorting Table13
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Bundling and Storing the Fiber
Bundling and Storing the Fiber
Fiber is tied into separate bundles by grade, each weighing 5-8 kg. Store in a dry, cool, well-ventilated warehouse on elevated pallets to protect from floor moisture. Excessive moisture causes fungal growth and weakens fiber. Farmers sell fiber at local markets (haats) or jute trading depots (arats).
මෙම පියවර සඳහා ද්රව්ය:
Jute Twine1 මිටිය
Wooden Storage Pallet2 කැබලිඅවශ්ය මෙවලම්:
Weighing Scale14
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Uses of Jute Pith (Shola)
Uses of Jute Pith (Shola)
The remaining woody stem (jute stick or shola) is not discarded — it serves multiple purposes. Used as cooking fuel, for building house fences, and for charcoal production. Modern applications include particle board and activated carbon manufacturing. No part of the jute plant goes to waste — a completely zero-waste crop.
ද්රව්ය
4- 1 මිටියස්ථානගත
- 5 කැබලිස්ථානගත
- 50 ලීටර්ස්ථානගත
- 2 කැබලිස්ථානගත
අවශ්ය මෙවලම්
5- ස්ථානගත
- ස්ථානගත
- ස්ථානගත
- ස්ථානගත
- ස්ථානගත
CC0 පොදු වසම
මෙම බ්ලූප්රින්ට් CC0 යටතේ නිකුත් කර ඇත. ඔබට අවසර නොමැතිව පිටපත් කිරීම, වෙනස් කිරීම, බෙදා හැරීම සහ භාවිතා කිරීම කළ හැක.
බ්ලූප්රින්ට් හරහා නිෂ්පාදන මිලදී ගැනීමෙන් නිර්මාතෘට සහාය වන්න නිර්මාතෘ කොමිසම විකුණුම්කරුවන් විසින් නියම කළ, හෝ මෙම බ්ලූප්රින්ට්හි නව අනුවාදයක් සාදා ආදායම බෙදා ගැනීමට ඔබේ බ්ලූප්රින්ට්හි සම්බන්ධතාවයක් ලෙස ඇතුළත් කරන්න.