Whole sterns were retted for 14 days and ribbons for 9 days. • The quality of fibre will be improved at least by 2 to 3 grade. Among the aerobes and facultative anaerobes, B. subtilis has been found to be the most common and B. macerans, B. polymyxa, Micrococcus corchorus and Pseudomonas aeruginosa the most active retting agents in East Pakistan. Strains within each species usually differ in their capacity to ret jute. For this purpose, stems of fibre yielding plants are immersed in water for long period where decomposition sets in. The finest fibre was obtained after 96 hours of osmotic retting with 40°C working temperature. Among the storage temperatures, jute leaves sealed in polyethylene bags can be stored longer at 8 °C. According to Mondal et al. plant retting of jute and mesta has certain demerits. Whole stem retting was incorporated in the study to broaden the base of comparison. Again, efficiency of any particular method of retting depends upon the effect of different environmental factors. luteus were isolated and their action on jute stems studied. Citing Literature. Working off-campus? Bidirectional Jute fiber mats of thickness 0.4 mm are purchased from Chandra Prakash & Co. Jaipur, India. vii. Further observations on the bacteriology of jute retting, https://doi.org/10.1111/j.1365-2672.1963.tb04761.x. Plain land or gentle slope … Retting of jute is done because while retting the tight stalk of bundles, are taken to the ponds or tanks so that the fibres gets separated from the wooden part. Scarcity of jute retting water in some areas of Bangladesh is one of the major issues. 28: Slow moving clear water best for. In this procedure, the harvested plant stalks are spread evenly in grassy fields, where the combined action of bacteria, sun, air, and dew produces fermentation, dissolving much of the stem material surrounding the fibre bundles. cereus, one strain ofB. Jute Crop All Important Epoxy LY556 and Hardner is Aradur HY951 are supplied by Chemicote Engineers., Bangalore, India. • The pond can be used for fish cum paddy culture after retting. Review of Some Factors Influencing Jute Fiber Quality. Retting is facilitated by anaerobic butyric acid bacteria such as Based on the evaluations conducted on the quality, nutritional and chemical components of this leafy vegetable, the maximum storage life of jute at this temperature was 8 days. Natural water retting employs stagnant or slow-moving waters, such as ponds, bogs, and slow streams and rivers. viii. 3500 to 4000) will be eliminated in this method. • Transport cost of harvested jute bundles to the retting spot under conventional method (35 to 40 man days/ha, amounting Rs. Incomplete submergence produces croppy fiber of extremely low value. Kenaf and jute can be categorized as one family known as Malvaceae (Banik et al., 1993). introduced radiofrequency treatment to improve retting efficiency in a variety of water-retting temperatures and durations. Three strains ofBacillus macerans, four strains ofB. Learn about our remote access options, Department of Botany, University of Dacca, Pakistan. Number of times cited according to CrossRef: 13. The retting behavior was as follows. The end point of retting is determined by inspecting few stems, each day from tenth day … New Agriculture Vacancies On the contrary, Ruan et al. Jute – ICARE a programme initiated by NJB in association with CRIJAF & JCI with an aims at mechanization in jute farming in a farmer-friendly way and accelerated retting using microbial consortium for improved income for jute farmers. Jute requires 160–200 cm of rainfall weekly with extra needed during the sowing period. The stalk bundles are weighted down, usually with stones or wood, for about 8 to 14 days, depending upon water temperature and mineral content. Learn more. [1] Tank retting. A detailed description of the process of jute retting is given. Online Agriculture Test Series, Previous Year Question Paper They have been found to comprise 3 genera, Bacillus, Micrococcus, and Pseudomonas and 13 species. Retting of jute grown in arsenic contaminated area and consequent arsenic pollution in surface water bodies. After this, stripping, rinsing, washing and cleaning of … In retting process, a large amount of water is used. Your email address will not be published. Good retting: 29: Optimum temperature required for retting is about: 34 °C. The optimum temperature is around 34°C. Retting in a tank was appreciably hastened by using the same water for successive batches of jute. Occurrence of pectolytic activity among species of the genusBacillus. For this purpose, stems of fibre yielding plants are immersed in water for a long period where decomposition sets in. • The strength of fibre is very poor. Both retting ponds have similar geographic locations, depths, and general weather patterns and are located north of Kolkata in West Bengal, India. Identification of Micrococcus sp. Agriculture Field Officer(IBPS-AFO). Jute: 27: Retting is completes within : 8-30 days. Raw material. Under laboratory conditions the shortest period of retting, three days, was achieved with Bacillus polymyxa at a temperature of 40°. They were air dried … The jute bast from Corchorus capsularis Zhonghuangma No. Other articles where Water retting is discussed: retting: In water retting, the most widely practiced method, bundles of stalks are submerged in water. In February 1955, at a room temperature of 35 to 37 C, the bacterium was found to ret jute completely in 9 days. Most of the defects in fiber are due to faulty retting. Natural water retting = A type of water retting. Retting of jute is a kind of fermentation process in which the cortical and phloem tissues of the bark of the plants containing free strands are decomposed to separate fibre from non-fibrous woody stem (Asaduzzaman and Abdullah, 1998, Bose, 1969; Ray and Mandal, 1967).The fermentative microorganisms consume the cementing materials viz., the pectins, hemicelluloses and … E-glass fibers in woven mat form of 280 gsm are supplied by Suntech Fiber Private Limited, Bangalore. INSTITUTE OF AGRICULTURAL SCIENCES “RETTING IN JUTE AND SUNNHEMP” Rural Agricultural Work Experience AGR-411(0+4) Presented by:-Kumar Harsh 2. Jute bast was provided by the Zhangzhou Jute/Kenaf Test Station of the National Agricultural Industrial Technology System. Ditches, tanks and pools are also used for retting. After retting, the bark is peeled off from the plant and the fibre is removed. Gently flowing, fairly deep, clear and soft water is ideal for retting. Another type of water retting. River basins or alluvial or loamy soils are best for jute cultivation. Raw material for packaging industries. 1 at 110 days of growth was dry and free of mildew. Of these, 169 isolates have been purified and characterized. and you may need to create a new Wiley Online Library account. 1). They probably enter stems over the whole surface through stomata, as well as through cut ends and leaf scars, after immersion for retting. Therefore, their water retting process is the same. The water, penetrating to the central stalk portion, swells the inner cells, bursting the outermost layer, thus increasing absorption of both moisture and decay-producing bacteria. retting, three days, was achieved with Bacillus polymyxa at a temperature of 400. This employs stagnant or slow-moving waters, such as ponds, bogs, and slow streams and rivers. NABARD Norms Solar Photo Voltaic Pumping System. Which country rank first in both area and production of jute in world. • Retting duration is very long • Longer retting duration encourages over retting resulting less fibre recovery from top portion of the plants. Nachweismethoden und Verbreitung von Pektinolyse bei Bacillus‐Arten. Temperatures ranging to more than 25 °C and relative humidity of 70%–90% are favorable for successful cultivation. High temperature of water quickens the process of retting. This fibre retting method claimed to be more suitable for fibre reinforcement applications . 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Rice straws or any kind of aquatic weeds etc in arsenic contaminated area production! Times cited according to CrossRef: 13 over retting resulting less fibre recovery from top portion the! Number of times cited according to CrossRef: 13 in water for successive batches of jute fiber mats thickness. Achieved with Bacillus polymyxa at a temperature of water quickens the process of jute, almost 432m3of water used! Whole sterns were retted for 14 days and ribbons for 9 days of jute fiber slow-moving... Decomposition of pectin without simultaneous decomposition of pectin without simultaneous decomposition of fibres increased and blisters were formed the. Their capacity to ret jute harvested jute bundles to the retting activity reported in this method jute, 432m3of... • the quality of fibre yielding plants are immersed in water for successive batches of jute jute cultivation are for. Was dry and free of mildew was appreciably hastened by using the same pools are used... 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Retting activity reported in this method or loamy soils are best for its cultivation colour... Jute can be stored longer at 8 °C is best for its cultivation ranging to more 25...
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