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Effect of Sowing Dates on the Growth and Yield of Blackgram Varieties

M. Biswas
Regional Agricultural Research Station, Jamalpur-2000, Bangladesh.

A.A. Begum
Regional Agricultural Research Station, Jamalpur-2000, Bangladesh.

Ali Afzal
Pulses Research Station, BARI, Gazipur-1701, Bangladesh.

F. U. Mia
Regional Agricultural Research Station, Jamalpur-2000, Bangladesh.

A. Hamid
Department of Agronomy, BSMARU, Salna, Gazipur, Bangladesh.

Abstract/ Executive Summary:

An experiment was conducted to determine optimum sowing time for different varieties of blackgram in Jamalpur region (AEZ-9) of Bangladesh. Pooled analysis exhibited a significant variation among the varieties in respect of seed yield. Barimash-3 produced the highest seed yield (977 kg/ha) which was statistically similar to that of Binamash-1 (960 kg/ha). Barimash-2 produced the lowest seed yield (866 kg/ha). Sowing dates exerted significant effect on seed yield. First sowing (31st August) produced significantly highest seed yield (1168 kg/ha) while the lowest seed yield (541 kg/ha) was found in the latest (28 September) sowing. Interaction also produced significant effect on seed yield. The highest seed yield (1225 kg/ha) was recorded from Barimash-3 with August sowing while the lowest (1404 kg/ha) was found in Barimash-2 with Sep. 28 sowing. All varieties produced maximum seed yield with August sowing. Barimash-3 and Binamash-1 performed better than others with delayed sowing up to Sep. 14 during both years.

Keywords: Sowing date, Growth, Yield, Blackgram

Location: Regional Agricultural Research Station Jamalpur, Bangladesh

Start Date: 00-00-1999

End Date: 00-00-2000

Program Area: Crop-Soil-Water Management

Commodity: Black gram

Objectives:

To know whether long range of sowing time in Kharif- II could have any effect on the growth and seed yield of blackgram varieties under the agro climatic conditions of Jamalpur in Bangladesh.

Methodology:

The experiment was conducted at the Regional Agricultural Research Station Jamalpur, Bangladesh during Karif-II August- September) seasons, 1999 and 2000 to determine the optimum sowing time for different varieties of blackgram in Jamalpur region. Four blackgram varieties viz. Barimash-1, Barimash-2, Barimash-3 and Binamash-1 and five sowing dates viz. August 31, September 07, September 14, September 21 and September 28 were included as treatments in the experiment. A split plot design was used assigning varieties in the main plot and sowing dates in the sub-plot. There were three replications having unit plot size 4 x 3 m² Seeds were sown @ 30 kg/ha in 30cm apart line and plant to plant distance, 3-5 cm was maintained after thinning. Fertilizers were applied @ 20-40-20 kg/ha of NPK, respectively, as basal during final land preparation. Seeds were sown in raised bed. Seeds sown in line made by iron made tine were not covered by soil because of much moistened soil with rainwater. Thus the crop sown in rainy days was established successfully. Insecticide "Diazinon" was sprayed to control insect pests for all crops while the fungicide "Tilt" @ 0.2% was sprayed to control powdery mildew specially in the later sowing. Weeding was done once at 20-30 days after sowing. Data on yield components were recorded from 10 randomly selected plants from each plot of each sowing. Seed yield was calculated from an area of 3 x 3m². Collected data were analyzed statistically and means were separated using Duncan's Multiple Range Test (DMRT).

Source of Information: Pakistan Journal of Biological Sciences 5(3): 272-274, 2002

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It may be suggested that all varieties of blackgram should be sown in last week of August to produce maximum seed yield. The results also suggested that the varieties, Barmash-3 could be sown one week later while Binamash-1 could be sown up to mid of September without significant reduction in seed yield than others in comparison with August 31 sowing in Jamalpur region.

Knowledge Management: Journal