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Influene of Sowing Timeon the Yield of Blackgram

M. G. Moula
Regional Agricultural Research Station, Jamalpu, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

S. Begum
Regional Agricultural Research Station, Jamalpur, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

M. A. Quayyum
Bangladesh Agricultural Research Institute, Joydebpur, Gazipur

Abstract/ Executive Summary:

The influence of season and time of sowing on the yield of blackgram was assessed in the field experiment at the Regional Agricultural Research Station, Jamalpur during the three consecutive years of 1993-94, 1994-95 and 1995-96 under rainfed condition. Three cropping seasons viz. Rabi (November-February), Kharif-1 (March-June) and Kharif-11 (July October) were used as the planting time. Sowing was started from November 15 with a fortnightly interval up to October 30 in every year. The variety was Barimash. The experiment was laid out in a randomized ccomplete block design with three replications. The results obtained from the study revealed that the variety Barimash could be grown throughout the year, but its performance was being better in the Kharif-1. It appeared that the variety is photo-insensitive, but thermo-sensitive. Averaged over three years, March 30 to April 15 sowing gave the higher seed yield. In conclusion, it could be said that Kharif-1 season was found to be the best time for blackgram (cv. Barimash) cultivation in Jamalpur region under AEZ-9.

Keywords: Blackgram, Seaso;l, Sowing time, Yield

Location: Jamalpur

Start Date: 09-11-1993

End Date: 23-02-1994

Program Area: Crop-Soil-Water Management

Commodity: Black gram

Objectives:

To find out the influence of season and time of sowing on the yield of blackgram for maximum yield in Jamalpur region.

Methodology:

The experiment was conducted at the Regional Agricultural Research Station, Jamalpur in three consecutive years, November 1993 to October 1996 under rainfed condition of AEZ-9. The objective of the experiment was to find out a suitable season and also a suitable time of sowing blackgram for obtaining higher yield. Three cropping seasons viz. Rabi (November-February), Kharif-1 (March-June) and Kharif-11 (July-October) were used as the planting time. Sowing was started from November 15 with a fortnightly interval up to October 30 in every year. There were altogether 24 sowing times in each year which were considered as treatments. The variety Barimash was used as experimental crop. The experiment was laid out in a randomized complete block design with three replications. The unit plot size was 3 m x 5 m. During the land preparation of each sowing, the plots were fertilized with 20 kg N, 40 kg P₂0₅ and 20 kg K₂0 per hectare through Urea, triple super . phosphate (TSP) and muriate of potash (MP), respectively. During the -growth period all the plots were kept weed free. Harvesting were done by hand picking depending on the maturity of the pods. Before picking the pods, ten plants were selected randomly from each plot for data collection. Total rainfall during 1993-94, 1994-95 and 1995-96 were recorded 1583, 2589 and 1694 mm, respectively. Data on plant height, branches/plant, pods/plant and seeds/pod were recorded from those selected plants. The yield data were taken plot wise after harvest. The collected data were analyzed statistically and means were separated as per DMRT.

Source of Information: Bangladesh J. Agril. Sci. 27(2): 159-162, July, 2000

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

The results revealed that yield and yield contributing characters were significantly influenced by sowing times in all the years. Plant height in 1993-94 were found longest in April 15 sowing which was statistically similar to afterwards sowing up to May 15. The shortest plant was recorded in November 30 sowing was at par to November 15. The shortest plant in these sewings might be due to low temperature prevailed during the growth period. Similar trends were also recorded in 1994-95 and 1995-96. During these years, November 15 sowing seeds were germinated but attack of virus at later growth stages failed to obtain seed yield. Sowing May 15 to June 30 were damaged due to heavy rainfall during the sowing time. In 1995-96, September 30 sowing could not survive due to rain just after emergence of the seedlings. October 30 sowing seeds could not established later due to low moisture.The lowest seed yield was obtained from the August 15 sowing but at par to July 15 to September 15 and November 30 to January 30. Kharif-11 sowings showed lower yield due to heavy. rainfall whereas sewings in rabi season resulted lower yield sowing to soil moisture and virus affected. However, averaged over three years, it was revealed that March 30 to April 15 sowing produced the higher seed yield. The seed yield of March 30 to April 15 sowing was found to be good because of synchronous maturity and less rain during harvesting time. Islam (1982) also reported similar findings. In general, the seed yield was considerably reduced during the other sowing dates, particularly from November 15 to February 14 and also from June 30 to October 30. In conclusion, it could be said that Kharif-1 season was found to be the best time for blackgram (variety Barimash) cultivation in Jamalpur region under AEZ-9.

Knowledge Management: Journal