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Yield and Quality of Radish Roots as Influenced by Time of Sowing and Spacing

S. Ahmad
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

M. A. Rashid
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

M.T. Rahman
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

A.E. Hossain
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur.

Abstract/ Executive Summary:

The experiment was conducted at Joydebpur during the year 1985-86 to study the effect of time of sowing and spacing on yield and quality of radish roots. Yield and quality of roots started reducing gradually from 15 November. Though the yield of radish root increased with closer spacings, the roots obtained from 30 cm x 15 cm spacing were too small for marketing. The interaction effect was found significant in respect of root yield and yield contributing characters. Higher yield (78.94 t/ha) with good quality roots were obtained from 1 November sowing with the spacing of 45 em x 30 cm followed by 15 November sowing with 45 cm x 30 cm spacing (78.52 t/ha), 15 November sowing with 60 cm x 30 cm spacing (74.15 t/ha) and 1 November sowing with 60 cm x 30 cm (65 t/ha).

Keywords: Time of sowing, Spacing, Radish roots, Yield and quality

Location: Horticulture Research Centre, Bangladesh Agricultural Research Institute,

Start Date: 00-00-1985

End Date: 00-00-1986

Program Area: Crop-Soil-Water Management

Commodity: Radish

Objectives:

To study the effect of time of sowing and spacing on yield and quality of radish roots.

Methodology:

The radish variety Tasaki Mula was used as the planting material. There were 16 treatments comprising four dates of sowing viz., 1 Nov. (T₁),15 Nov. (T₂), 1 Dec. (T₃), and 15 Dec. (T₄) and four spacings viz., 60 cm x 45 cm (S₁), 60 cm x 30 cm (S₂), 45 cm x 30 cm (S₃) and 30 cm x 15 cm (S₄), Split plot design with three replications was followed. The spacing and sowing treatment were assigned to the main and sub-plots respectively. The unit plot size was 9m x 1.8 m. Fertilizers were applied @ 300 kg urea, 250 kg TSP and 250 kg MP per hectare. The full dose of TSP and half of urea and MP were applied at final land preparation. The rest of urea and MP were applied as top-dressing at two equal installments after 20 and 35 days of sowing. Weeding, mulching and irrigation were given as and when necessary. Twenty plants from each plot were randomly selected for data. The data in respect of total plant weight, root weight, number of leaves, root length, root diameter, branching and hollowness were recorded and analyzed statistically, and means were compared by LSD method. Degree of branching and hollowness were calculated by using the formula of Rashid et al., 1984.

Source of Information: Bangladesh Hort., 20 (1): 1-6,1992; ISSN 0379-4288

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Yield and quality of roots started reducing gradually from 15 November. Though the yield of radish root increased with closer spacings, the roots obtained from 30 cm x 15 cm spacing were too small for marketing. The interaction effect was found significant in respect of root yield and yield contributing characters. Higher yield (78.94 t/ha) with good quality roots were obtained from 1 November sowing with the spacing of 45 cm x 30 cm followed by 15 November sowing with 45 cm x 30 cm spacing (78.52 t/ha), 15 November sowing with 60 cm x 30 cm spacing (74.15 t/ha) and 1 November sowing with 60 cm x 30 cm (65 t/ha). Therefore, from the results of the present study, it may be concluded that for higher root yield the tropical radish varieties like Tasaki Mula should not be sown beyond 15 November with the spacing of 45 cm x 30 cm and 60 cm x 30 cm.

Knowledge Management: Journal