Abstract:The environmental stress such as salinity of soil or water is serious threat for field crops in the world, especially in arid and semiarid regions. To study salinity stress on jute (Corchorus capsularis), an experiment was laid out in factorial randomized block design keeping nine capsularis varieties (JRC-698, JRC-321, JRC-517, JRC-7447, JBC-5, JRC-212, JRC-80, JRC-532 and UPC-94) as one factor and four levels of salt concentrations i.e. control (Distilled H 2 O), 100, 160, 240 and 300 mM NaCl with three replications. Adverse effect of salinity increased with increasing concentration of sodium chloride. Among nine jute varieties the highest germination percentage (89.5%), root length (0.6 cm), shoot length (1.2 cm), fresh weight (93 mg) and dry weight (9.5 mg) of seedling were observed in 'JRC-698' at salt concentration at 160 mM NaCl as compared with other salt concentration. All growth parameters were recorded higher in control than other treatments. All growth parameters were decreased up to 240 mM NaCl concentration and it was completely inhibited at 300 mM NaCl. Variety 'UPC-94' was the most susceptible to salinity stress. Hence, white jute varieties, JRC-698 and JRC-517 can be grown at 160 mM NaCl concentration.
A study was conducted to evaluate the salinity tolerance of white jute (C. capsularis) cultivars. Five white jute cultivars were assessed for different salinity concentrations (0, 100, 150, 200 and 250 mM NaCl) in a split plot design with three replications per concentration under greenhouse condition. A total of fifteen plants were sampled from each treatment ten days after treatment with NaCl to determine morphological and physiological parameters. I n c r e a s e d N a C l concentrations reduced all the morphological and physiological parameters such as plant height, root length, number of leaves, leaf area, shoot and root dry weight, relative leaf water content (RLWC), chlorophyll, protein, proline content, + K accumulation in shoot and leaves, but water saturation deficit (WSD) + and Na contents were increased in the shoot and leaves. The study revealed that among all cultivars assessed JRC-532 and JRC-321 showed relatively better performance against salt stress whereas cultivar JRC-517 was found more susceptible to salt stress.
A field experiment was conducted during the year 2011-13 to study the nutrient management based on soil test to achieve the target yield of jute and rice and their effect of soil nutrient status for jute-rice cropping system. The target yield of jute fibre (3.5 t/ha) with -6% deviation and target yield of rice (5.5 t/ha) were achieved with application of 100% NPK based on ST-TY based along with 5 t/ha Farm Yard Manure (FYM). The highest system productivity (11.7 t/ha) and benefit-cost ratio (3.16) was also recorded higher with application 100% NPK based on ST-TY based along with 5 t/ha FYM. The nutrient uptake by crops and soil nutrients status were higher after three year of jute-rice cropping sequence when NPK were applied with FYM. Hence, combination of inorganic and organic (FYM) fertilizer could achieve target yield and maintain the soil fertility status.
A field experiment was conducted to study the effect of nutrient and crop residue incorporation on productivity jute based cropping system in split plot design during 2012-14. The main plot comprised of five cropping sequences viz., rice-rice, jute-rice-wheat, jute-rice-baby corn-jute (for leafy vegetable), jute-rice-garden pea, jute-rice-mustard-mungbean andfour nutrient management practicesviz. 75% recommended doses of fertilizers (RDF) with and without crop residue (rice, wheat, corn, garden pea and mungbean with their respective cropping sequence) and 100 % RDF with and without crop residue in sub plot. Jute-rice-baby corn- jute(leafy vegetable) cropping system recorded the highest system productivity (192.36q/ha) followed by jute-rice-garden pea (88.6 q/ha), water use efficiency (34.86 kg/m3), production efficiency (65.9 kg/ha/day), and economic efficiency (Rs724/ha/day) followed by jute-rice-garden pea recorded those parameter were (89.4 q/ha), 27.01 kg/m3, 30.31 kg/ha/day and Rs.346/ha/day, respectively.The land use efficacy (94.5%) was higher in jute-rice-mustard- mungbean followed by jute-rice-baby corn-veg. jute(93.2%). The higher system productivity of all crop sequences was recorded with 100 % RDF with crop residue. However it was at par with 75% RDF with crop residue and100% RDF.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.