Corchorus olitorius

About: Corchorus olitorius is a research topic. Over the lifetime, 638 publications have been published within this topic receiving 5250 citations. The topic is also known as: Mulukhiyah & Nalta jute.

Determination of Crop Co-efficient Values for Jute (Corchorus olitorius L.)

Abstract: Site specific calibration of crop coefficient (Kc) values is essential for irrigation scheduling of any crop. In order to determine the values of Kc for jute, an experiment was conducted at the Irrigation and Water Management Division of Bangladesh Agricultural Research Institute (BARI), Gazipur. An improved jute variety BJRI Tosa-2 (O-9897) was used in this experiment. The study examined growth and yield of the jute in terms of four irrigation treatments distributed over 7-28 days intervals. The treatments were so designed that drainage was allowed between the consecutive irrigations. Irrigation at 14days interval produced the highest dry fiber yield (3.93 t/ha) and was considered to be suitable for estimating seasonal crop evapotranspiration and Kc values. The seasonal crop ET was 549.13 mm under this treatment. The Kc values of jute at initial, development, mid-season and late season stages were found to be 0.72, 1.39, 1.26 and 0.46, respectively. As there is no FAO-recommended Kc value for this crop, this locally calibrated values can be used for similar climatic conditions of Bangladesh and elsewhere. Therefore, based on Kc value, it can be recommended that jute can be irrigated by equal amount of water needed for crop evapotranspiration (ETc) for different growth stages (141.05, 142.57, 167.34, and 84.30 mm) to get maximum dry fiber yield. The Agriculturists 2018; 16(2) 115-122

Effect of Temperature Treatments on Seed Germination and Seedling Growth of Jute Mallow (Corchorus olitorius)

Abstract: Jute mallow (Corchorus olitorius) is one of the common green leafy vegetables used widely throughout Ghana. Jute mallow is cultivated by seeds and the demand for the crop is year-round. Despite the high demand, its efficient production is marred by poor seed germination. Thus, this study seeks to determine the effect of pre-chill, dry and wet heat on germination, seedling emergence and seedling vigor of jute mallow. Results revealed that hot water at 70⁰C with combination of 70⁰C oven heat for thirty (30) minutes produced the best germination, emergence and seedling vigour. The effect of hot water at 70⁰C only was also significantly higher than other treatments. Jute mallow farmers who produce on small scale could use hot water at 70⁰C to treat seeds before sowing. Large scale producers, however, could use a combination of hot water at 70⁰C and oven heat at 70⁰C to treat seeds before sowing.

Growth and development characteristics of molokhia (Corchorus olitorius L.), a subtropical leafy vegetable.

Abstract: Here we firstly report on the growth and development characteristics of molokhia (Corchorus olitorius L.) in Korea, which is a subtropical vegetable that reportedly contains rich minerals and biologically functional substances. Three molokhia accessions introduced from Japan and the Philippines were cultivated in different cropping seasons. The spring-sown (20 April) seedlings showed a vigorous growth during hot season, and their final heights mounted up to 3.3 m when measured in the end of cultivation (20 October). Both spring- and summer-sown (20 June) molokhia plants produced the marketable tender shoots while the growth of autumn-sown (20 August) ones was suppressed owing to low temperature. Meanwhile, the first flowering arose from springand summer-sown plants on 19 May and 23 October, respectively, which confirms that molokhia is a short day plant species with daylength-sensitivity variation depending on genotypes. Our results indicate that the early transition from vegetative stage to reproductive stage has contrary aspects regarding the economic production of vegetable and seed: unfavorable to vegetable yield but crucial for seed production. The viable seeds were harvested from the summer-sown plants in the amount of 10 g per plant. We believe that the present study might contribute to domestic production of molokhia as a leafy vegetable with seeds in Korea, a temperate zone.

Assessment of Pesticide Residues in Some Commonly Cultivated Vegetables in Doma Metropolis, Nasarawa State, Nigeria

Abstract: Commonly cultivated vegetables (Amaranthus hybridus, and Corchorus olitorius) in Doma and environs were analyzed to determine the residual level of pesticide. The samples extracts were subjected to High Performance Liquid Chromatography (HPLC) using Acetonitrile, Anhydrous MgSO4, NaCl and Ultrapure water used as mobile phase. Data obtained were analyzed using Minitab 16.0.The following tests were applied: Chi square test of association, Mann Whitney U-test of comparing two non parametric systems, Kruskal Wallice H-test and the Independent t-test of significance. All hypotheses were tested at 95% level of significance. Analysis showed highest concentrations residual level of Cypermethrin in the Doma wet Corchorus olitorius sample at 2240.94mg/L with no traces in Igbabo sample. For the dry Corchorus olitorius sample, highest value was recorded in Doma (61.046mg/l) while Igbabo sample showed the lowest (9.285mg/l). The highest residual value (226.39mg/l.) of Cypermethrin in Amaranthus hybridus appeared at Igbabo with the lowest (12.18mg/l) in Alwaza Lamda Cyhalothrin, Alwaza wet Corchorus olitorius sample recorded highest value of 0.00593mg/l with lowest value (0.00058mg/l) in Doma. Dry sample jute recorded highest (0.0159mg/l) in Igbabo; lowest value (0.0002mg/l) in Doma. In spinach samples, the highest value (0.00171mg/l) appeared in Alwaza while igbabo (0.00051mg/l) recorded the lowest. The results showed that Cypermethrin values were well above the Japan Research Foundation MRLs of 0.03mg/l. This has serious implications on the consumers of the vegetables cultivated in the study area. However, for Lamda Cyhalothrin residues results occurred on levels well below MRLs of 0.5mg/l.