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Growing Degree Days, Dry Matter Production, Grain Growth and Yield of Mustard Varieties

M. A. Aziz
CSO
Agronomy Division, BARI, Gazipur

M.S.A. Khan
SSO
Agronomy Division, BARI, Gazipur

Abstract/ Executive Summary:

The experiment was conducted at the research field of the Agronomy Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, during robi season, 2013-2014 to find out the accumulated growing degree days (GDD) of the different varieties of mustard for different development events and to observe the dry matter production, grain growth and yield potentiality. Among the varieties, BARI Sarisha-16 accumulated maximum GDD of 380.50, 407.15 and 949.30 °C for the events of first flowering, 50% flowering and maturity, respectively with maximum duration at all events. Significantly the highest seed yield was recorded in BARI Sarisha-16 (1150 kg ha^-1) which was identical with BARI Sarisha-15 (1050 kg ha^-1) and BARI Sarisha-14 (1025 kg ha^-1). The lowest seed yield was obtained from Tori-7 yielded 875 kg ha^-1.

Keywords: Growing degree days, dry matter, grain growth, yield, mustard

Location: Joydebpur, Gazipur.

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Variety and Species

Commodity: Mustard

Objectives:

To find out the accumulated growing degree days (GDD) of the different varieties of mustard for different development events for the future selection and development of mustard variety.

Methodology:

The experiment was conducted at the research field of the Agronomy Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, during robi season, 2013-2014. The soil was silty clay in texture. The experiment was evaluated four varieties of mustard. These were: i. BARI Sarisha-14, ii. BARI Sarisha-15, iii. BARI Sarisha-16 and iv. Tori-7. The experiment was laid out in a RCBD design with four replications. The soil was fertilized with 120-35-90-30 kg NPKS/ha. Seeds of all varieties were sown on Novemver 22, 2013 in lines with maintaining 30 cm row to row spacing. Half of urea and full doses of other fertilizers were applied at the time of final land preparation. The remaining half of urea was top dressed at vegetative and flowering stage followed by irrigation. Admire 200SL @ 1 ml/liter of water was sprayed at 20 and 35 DAE to control Jassids and white flies. Rovral-50 WP @ 2 g/liter of water was sprayed at 30 and 45 DAE to control Alternaria diseases. Daily temperatures were recorded for computing required growing degree days.. Growing degree days (GDD) were computed by using daily normal maximum air temperature, minimum air temperature, mean air temperature and considering base temperature of 10º C for mustard (assume). The sum of degree days for the completion of different development stage of mustard were obtained by using the following formula (Kumar et al., 2008); Accumulated GDD (º C day) = Summation (Daily mean air temperature in º C – Base temperature of soybean). At the flowering stage, plant samples of one square meter area from different varieties were collected. Different plant parts of the collected samples were separated and then oven dried at 70 ºC for 4 days to measure the dry weight. Harvesting of different varieties was done from February 13 to March 09, 2014. At the time of harvest, yield contributing characters were recorded from linearly collected five plants and yield data were recorded by harvesting one square meter area. Data were analyzed by MSTAT-C and means were compared using Least Significant Difference (LSD).

Source of Information:

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 30,000/-

Total Budget (Tk.) : 30,000/-

Achievement/Findings:

From the above findings, it might be concluded that BARI Sarisha-16 produced maximum dry matter and seed yield with maximum duration of vegetative and grain growth period by the accumulation of maximum GDD.

Knowledge Management: Report/Proceedings