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Effect of Sowing Date on the Viability and Vigour of Tossa Jute (corchorus Olitorius L.) Seed in Late Sown Condition

S. M. Mahbub Ali
Bangladesh Jute Research Institute, Manik Mia Avenue, Dhaka-1207.

M. M. Haque
Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur, Bangladesh.

A. B. Siddique
Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur, Bangladesh.

A. T. M. M. Alom
Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur, Bangladesh.

M. G. Mostofa
Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur, Bangladesh.

Abstract/ Executive Summary:

Quality of tossa jute seed obtained from different sowing dates was evaluated by using germination test, speed of germination, seedling evaluation test, electrical conductivity and accelerated ageing test. It was found that sowing date had a effect on seed viability, but had larger effect on seed vigour. Germination percentage ranged from 87.00 to 97.7 in 0-9897 and 78.25 to 95.75 in OM-1. The seeds obtained from 5^th October sowing showed the lowest germination percentage in both the varieties. Seedling growth of the variety OM-1 was better than that of 0-9897 and 5^th October sowing produced the lowest seedling dry weight in both the varieties. Electrical conductivity of seeds of 0-9897 was higher than seeds of OM-1. In 0-9897, it varied from 254 to 322 µs cm^-1 and in OM-1 it varied from 250 to 306 µs cm^-1. In general, ageing rate of OM-1 was faster than 0-9897. Germination percentage of seeds decreased gradually with the increase in ageing time. Sowing dates also influenced on the ageing pattern of jute seeds. Seeds collected from 5^th October sowing ended its life only at 4 days of ageing. While jute seeds obtained from July-August sowing completed its life by five days ageing. Jute seeds produced from September sowing was much better than that of other sowings and took 6 days of ageing to end their lives. Among the three dates of September sowing, jute seeds obtained from 5^th September were superior in terms of germinability of aged seeds.

Keywords: Jute, Sowing time, Seed, Corchorus olitorius.

Location: Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur.

Start Date: 01-07-2001

End Date: 30-03-2002

Program Area: Crop-Soil-Water Management

Commodity: Jute

Objectives:

To determine the effect of sowing date on the seed quality of tossa jute in late sowing condition.

Methodology:

The experiment was conducted at the Bangabandhu Sheikh Mujibur Rahman Agricultural University (BSMRAU), Salna, Gazipur during July 2001 to March 2002. Two varieties of tossa juite namely O-9897 and OM-1 were shown at ten days interval. The design of the experiment was split plot with three replications. Unit plot size was 4m X 3m and distance between plot to plot was 1m. Seed quality and electrical conductivity was assessment, by following stander method, germination test, speed of germination were calculated using the formula if Copeland (1976). Seed quality, evaluation of seedling, electrical conductivity, test, accelerated ageing test and transformation of data were calculated using stander method. All data were analyzed by Analysis of Variance (ANOVA) (Gemoz and Gemoz, 1984) using MSTAT package and the means were completed according to Duncan’s Multiple Range Test.

Source of Information: SAARC JOURNAL OF AGRICULTURE, Vol. 2, 2004, pp.23-38, ISSN 1682-8348, SAARC Agricultural Information Centre.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed that jute seed yield and seed quality (viability and vigour) varied significantly due to varieties itself as well as sowing dates. It was found that sowing date had a small effect on seed viability but had larger effect on seed vigour. Among the two varieties, sowing dates showed profound effect on seed quality. Late sowing till September considerably increased the seed quality of jute. Further delay in sowing reduced drastically seed quality of tossa jute. For the best quality seed, sowing of tossa jute by 5^th September is recommended.

Knowledge Management: Journal