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Influence of Different Levels of Potassium on Yield and Fibre Strength of Jute

S.R. Sarker
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh, 2202

M.A.H. Chowdhury
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh, 2202

K.M. Mohiuddin
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh, 2202

B.K. Saha
Department of Agricultural Chemistry, Bangladesh Agricultural University, Mymensingh, 2202

Abstract/ Executive Summary:

Jute is an important fibre crop in Bangladesh. Potassium has beneficial effect not only in fibre yield but also effectively influence the fibre strength. We hypothesized that fibre yield and strength of jute could be influenced by variety and different K levels. Therefore, this field study was carried out to assess the effects of five different levels of K and two varieties on the yield and fibre strength of jute at the field laboratory of the Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh, during the period from April to August 2011. The K levels were 0, 10, 20, 30 and 40 kg ha^-1 and the varieties were CVL-1 and O-9897. The land was fertilized as per experimental treatments along with the recommended doses of urea, TSP, gypsum and zinc sulphate to supply N, P, S and Zn, respectively. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. Both variety and K levels significantly influenced the yield and yield attributes of jute. The highest values of yield contributing parameters, stick and fibre yield and fibre strength were obtained from the variety O-9897 compared to CVL-1. Plant height, bark and stick diameter, fresh bark and stick weight, fibre yield, stick yield and fibre strength were significantly influenced by the different levels of K. The highest values of most of the parameters were found from the plants fertilized with 30 kg K ha^-1 for both varieties except fibre strength which was highest when K was applied @ 40 kg ha^-1 and the lowest values of all the mentioned parameters were obtained from control. The overall results suggest that K @ 30 kg ha^-1 can be applied for getting higher yield and quality of C. olitorius cv. O-9897 under the agroclimatic condition of BAU farm.

Keywords: Jute, Potassium, Yield and Fibre strength

Location: Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh

Start Date: 00-04-2011

End Date: 00-08-2011

Program Area: Crop-Soil-Water Management

Commodity: Jute

Objectives:

1. To study the response of jute to different levels of K fertilizations in terms of plant productivity, fibre quality and their interactions.

Methodology:

The experiment was carried out at the field laboratory of the Department of Genetics and Plant Breeding, Bangladesh Agricultural University, Mymensingh during the period from April to August, 2011. The field was medium high land and soil belongs to the Sonatola soil series under the AEZ of Old Brahmaputra Floodplain (AEZ-9). Soil sample was collected and kept in a polyethylene bag for chemical analysis. The experiment consisted of two factors: a) Variety of jute viz. CVL-1 and O-9897, b) Levels of K viz. 0, 10, 20, 30, and 40 kg ha^-1. Seeds were collected from Bangladesh Agricultural Development Corporation (BADC), Mymensingh. There were 10 treatment combinations with variety and levels of K. The experiment was laid out in Randomized Complete Block Design (RCBD) with three replications. The unit plot size was 4 m × 2.5 m. The spaces between replication and unit plots were 1m and 0.5 m, respectively. The treatments were randomly distributed. The land was ploughed six times with country plough followed by laddering. At the time of final land preparation, the land was fertilized with urea, TSP, gypsum and zinc sulphate @ 80, 20, 40 and 7 kg ha^-1, respectively. Muriate of potash was used as a source of K as per treatment. Seeds were sown on April 30, 2011. Weeding, gap filling, thinning, irrigation and pesticide application were done as and when necessary throughout the growth period of the crop. The crop was harvested on August 29, 2011 at 50% flowering stage. Ten plant samples were taken at random from each plot to study the yield contributing characters of jute. After harvesting, plants were made into small bundles and kept standing on the ground for 4 days for shedding of leaves prior to steeping. Bundles were steeped plot wise on September 5, 2011 in pond water for retting which was completed within 15 days after steeping. The fibres in the bark get loosened and separated from the woody stalk due to the removal of pectin’s, gums and other mucilaginous substances. This was usually done by the combined action of water, temperature and microorganisms. Fibres were extracted by stripping and washed thoroughly in clean water, dried in the sun on bamboo bars, and weighed to get the fibre yield. Jute sticks were also dried and weighed. A pressly instrument was used for the determination of fibre strength. Analysis of variance was done with the help of computer package program MSTAT according to Gomez and Gomez and adjudged the mean differences as Least Significant Difference Test (LSD).

Source of Information: J. Agrofor. Environ. 6 (1): 39-42, 2012; ISSN 1995-6983

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The effect of different levels of K and variety on jute strength was significant. The highest strength of jute fibre (9.23 lb mg^-1) was observed in variety O-9897 and the lowest (8.36 lb mg^-1) was in CVL-1. Maximum (10.55 lb mg^-1) fibre strength was measured at 40 kg K ha^-1 which was statistically identical with (9.83 lb mg^-1) K₃₀ and the lowest value (6.46 lb mg^-1) was found in the control treatment. The result provided that constructive effect of K on fibre quality also influenced significantly. The interaction of variety and levels of K had significant effect on the strength of jute fibre. The highest (10.78 lb mg^-1) fibre strength was recorded in variety O-9897 with 40 kg K ha^-1 and the lowest (5.68 lb mg^-1) was from CVL-1 with 0 kg K ha^-1. The result showed that higher amount of K fertilization contributed higher fibre strength, while K had discernible effects on fibre quality.

Knowledge Management: Journal