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Economic Impact of Seedling Age of Irrigated Rice

M. Eusuf Harun
Bangladesh Rice Research Institute, Joydcbpur, Gazipur-1701, Bangladesh.

M. A. Mannan
Bangladesh Rice Research Institute, Joydebpur, Gazipur-1701, Bangladesh.

M. R. Islam
Bangladesh Rice Research Institute, Joydebpur, Gazipur-1701, Bangladesh.

B. A. A. Mustafi
Bangladesh Rice Research Institute, Joydebpur, Gazipur-1701, Bangladesh.

S. B. Siddique
Bangladesh Rice Research Institute, Joydebpur, Gazipur-1701, Bangladesh.

Abstract/ Executive Summary:

Due to low temperature during December-January, the growth of irrigated rice seedlings is retarded making them too short to transplant. To overcome this, usually older seedlings are planted. In order to ascertain the optimum seedling age, two experiments were conducted consecutively at the Bangladesh Rice Research Institute farm, Gazipur during the 1986 and 1987 dry seasons. The varieties, BR3 and IR50 were transplanted in 1986. and BR14 and IR50 were used in 1987. In both the years, 20-, 40-, 60-, and 80-day-old seedlings were planted, respectively,on 15 January and 15 February. Although 20-day-old seedlings of both the varieties performed well in terms of yield and gross return, from the economic view point, 40-day-old seedlings proved profitable.

Keywords: Economic impact, Seedlig age, Irrigated rice

Location: BRRI farm, Gazipur

Start Date: 00-00-1986

End Date: 00-00-1987

Program Area: Socio-economic and Policy

Non-commodity: Impact

Objectives:

To determine the optimum ages of seedlings from economic view point.

Methodology:

Two experiments were undertaken at BRRI farm, Gazipur, during the 1986 and 1987 Boro season. Long (BR3) and short (lR50) duration varieties were transplanted in 1986 (first trial) and medium (BRI4) and short (IR50) duration varieties were used in 1987 (second trial), to find out the optimum age of seedlings. Both the experiments were carried out in a split- plot design distributing treatments with variety in main plot and seedling age in the sub- plot. The unit plot size was 2.5m x 2m having plant spacing of 25cm x 20cm. In both the experiments, 20-, 40-, 60- and 80-day-old seedlings were transplanted on 15 January and 15 February fertilized with 80-60-40-10 kg NPKS/ha. The crops were irrigated and weeded as and when needed. Economic profitability was calculated on the basis of experimental findings in 1987. For details economic analysis, partial budgeting and marginal analysis of varying seedling age trials were worked out. For this purpose, operation-wise labour requirement, average grain yield, gross return, gross margin, and total variable costs by seedling age and rice variety were calculated. Cost of fertilizer and labourers needed for cultivation purposes were the only variable cash costs and the rest of the costs were considered to be constant.

Source of Information: Bangladesh Rice J. 2 (1 & 2): 90-95, 1991

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Twenty-day-old seedlings of both the varieties performed well in terms of yield and gross return, from the economic view point, 40-day-old seedlings proved profitable.

Knowledge Management: Journal