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Effect of Irrigation and Nitrogen on Tomato Yield in the Grey Terrace Soil of Bangladesh

M. J. Rahman
Scientific Officer
Horticulture Research Centre, Bangladesh Agricultural Research Institute, Joydebpur, Gazipur-1701

M. N. Rahman
Scientific Officer
Soil Science Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, Bangladesh

R. A. Begum
Senior Scientific Officer
Soil Science Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, Bangladesh

M. K. Alam
Scientific Officer
Soil Science Division, Bangladesh Agricultural Research Institute (BARI), Joydebpur, Gazipur, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at Central Research Station, BARI, Joydebpur during rabi season of 2003-04 and 2004-05 to study the effect of irrigation and nitrogen on tomato (Var.BARI Tomato-9). Sixteen treatment combinations comprising 4 irrigation (IW: CPE ratios of 0.6, 0.8, 1.0 and a rainfed condition) and 4 levels of nitrogen (0, 80, 160 and 240 kg ha^-1) were tested in a split plot design with three replications. Irrigation and nitrogen alone and in combination influenced the yield and yield contributing characters of tomato. From the response curve of average yield data of 2003-04 and 2004-05, optimum N dose was recorded to be 163.3 kg ha^-1 and economic dose 182.3 kg/ha. At the same time optimum average fruit yield was recorded 50.43 t ha^-1. Total water use recorded was 15.48, 26.71, 29.10 and 31.20 cm in 2003-04 and 16.80, 27.79, 31.97 and 32.81 cm in 2004-05 for rainfed condition and IW: CPE ratios of 0.6, 0.8 and 1.0, respectively. The total number of irrigation at 0.6, 0.8, and 1.0 ratio came out to be 3, 4 and 5, respectively during the Rabi season of 2003-04 and 2004-05.

Keywords: Irrigation, Nitrogen, Evapotranspiration, Yield

Location: Experimental farm of Central Research Station, BARI, Joydebpur

Start Date: 00-11-2003

End Date: 00-04-2005

Program Area: Crop-Soil-Water Management

Commodity: Tomato

Objectives:

To find out the suitable irrigation schedule based on IW: CPE ratios under varying levels of N for optimum growth and yield of tomato at Grey Terrace soil of Joydebpur.

Methodology:

A field experiment was conducted during rabi season of 2003-2004 and 2004-2005 at central research station, BARI, Joydebpur. The treatment comprised 4 levels of irrigation based on IW: CPE ratio which were: I₀ (a rainfed condition-control), I₁ (IW/CPE: 0.6), I₂ (IW/CPE: 0.8) and I₁ (IW/CPE: 1.0) and 4 levels of N were : 0,80, 160 and 240 kg/ha. The experiment was laid out in a split plot design with 3 replications. Irrigation was assigned in the main plot and nitrogen in the subplot. The unit plot size was 3 m x 2.4 m and tomato spacing 60 cm x 40 cm. A fertilizer dose of 45-80-20-01 PKSB kg ha^-1 and 5 t ha^-1 cowdung were applied at the final land preparation. One-third nitrogen was applied during final land preparation and remaining nitrogen was applied in two equal splits at 20 and 40 days after transplanting. The 30 days old healthy seedlings of BARI Tomato-9 were planted in the experiment on 01^st December of 2003 and 2004. Tomato fruit was harvested in the first week of March of the year 2004 and 2005. The irrigation (4.0 cm) was applied when cumulative pan evaporation reached 67, 50 and 40 mm of 0.6, 0.8 and 1.0 IW: CPE ratios. The mean minimum temperature was recorded 15.32 ºC in 2003-04 and 14.24 ºC in 2004-05. Mean maximum temperature were 29.22ºC and 28.44ºC for the respective year. The total rainfall received during crop period was 8.8 mm and 9.9 mm for the year 2003-04 and 2004-05. Cultural practices were done as and when necessary. Ten plants from each plot were selected for data collection of plant height, number of branch/plant, number of fruits/plant and wt. of fruit/plant. Fruit yield was recorded on the whole plot basis. Data recorded on yield and yield-contributing characters were subjected to statistical analysis through analysis of variance and mean separation done following Duncan’s Multiple Range Test (DMRT).

Source of Information: J.Soil.Nature. 1 (3):01-04, (2007)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It may be recommended that four times irrigation (15, 40, 60 and 75 days after planting) and 163.3 kg N ha^-1 are suitable for cultivation of tomato (BARI Tomato-9) in the Grey Terrace Soil of Bangladesh (AEZ-28).

Knowledge Management: Journal