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Effect of Planting Method and Nitrogen Levels on the Yield and Yield Attributes of Wheat

Md Ilias Hossain
Regional Wheat Research Centre, Shyampur, Rajshahi

Md Khairul lslam
Dept. of Crop Science and Technology, Faculty of Agriculture, University of Rajshahi,

Md. Abu Sufian
Wheat Research Centre, Dinajpur

Md. Sayeedul Islam
Dept. of Genetics and Breeding, Faculty of Agriculture, University of Rajshahi, Bangladesh

Abstract/ Executive Summary:

A field trial was conducted during the winter season of 2001- 2002 to find out the effect of planting method and nitrogen levels on wheat. Effects of two planting methods viz. bed planting and conventional planting were studied on three nitrogen levels viz. 50, 100 & 150 kg/ ha on wheat (var. Protiva). Planting methods exhibited significant variation in respect of all the characters studied. The maximum grain yield (3.60 t/ ha) was obtained from bed planting. Different levels of nitrogen significantly influenced on yield and yield attributing parameters of wheat. The highest grain yield (3.70 t/ ha) was recorded from 150 kg N per hectare. The interaction effects of planting methods and nitrogen levels showed the significant difference in respect of spike/ m², spike length and grain yield. Highest grain yield (4.04 t/ ha) was obtained at bed planting using 150 kg N per hectare. Though higher rate of N are used but lodging of plant height was not noticed. The correlation analysis showed that the rate of change of grain yield was highly dependent upon the rate of change of yield contributing characters of wheat.

Keywords: Planting methods, Nitrogen, Wheat, Cropping system

Location: Regional Wheat Research Center, BARI, Shyampur, Rajshahi

Start Date: 01-11-2001

End Date: 30-03-2002

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

To determine the suitable planting method and optimal quantity of nitrogen fertilizer for increasing yield and keeping the soil fertility over the long term.

Methodology:

The experiment was carried out at the research field of Regional Wheat Research Center of BARI, Shyampur, Rajshahi, Bangladesh during the winter season of 2001- 2002 using wheat variety Protiva. The experimental site was a medium high land and the pH of the soil was 7.6 with organic matter content of 0.8%. It also had low amount of nitrogen (0.07%), phosphorus (7.16 ppm), potassium (0.29 meg/ 100 g soil) and sulfur (2.86 ppm) supply capacity. Texturally the soil was silty clay loam and neutral in nature. There were six treatment combinations consisting of two levels of planting methods viz. bed planting and conventional planting and three levels of nitrogen (viz. 50, 100 and 150 kg/ ha. Bed (row to row distant, 30 cm) and conventional (row to row distant, 20 cm) plantings are the method of continuous sowing by bed planter machine in bed and continuous sowing by hand in conventional system. A normal dose of phosphorus (60 kg/ ha) from triple super phosphate, potassium (40 kg/ ha) from muriate of potash and sulfur (45 kg/ ha) from gypsum and the two- third (2/3) of nitrogen were applied during final land preparation. The remaining nitrogen was top dressed at CRI stage followed by 1^st irrigation. The experiment was laid out in split plot design with three replications. The planting method was set up in main plot and N levels in sub plot. The plot dimension was 5 m x 3 m. Seeds were sown on 27^th November 2001. Irrigation was applied just to fill the furrow in all the treatments. Three irrigation were done in this trial. First, second and third irrigation were given in CRI, tillering and panicle initiation stages with the supply of 240 litre/15 m² in bed and 320 litre/ 15 m² in conventional tilled flat methods, respectively. One weeding was given after first irrigation on December 22, 2001. Finally, harvesting was accomplished on March 27, 2002. During the tenure period of investigation, there existed the average minimum and maximum temperature (17.73- 29.450 C), rainfall (13.0- 18.3 mm) and relative humidity (77.52- 91.38%), respectively. Data were collected from 15 m² (whole plot) of each plot and statistically analyzed. LSD was used to determine the significant difference between treatments.

Source of Information: JOURNAL OF BIO-SCIENCE, THE INSTITUTE OF BIOLOGICAL SCIENCES RAJSHAHI UNIVERSITY, Vol. 14, 2006, pp. 127-130, ISSN 1023–8654.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Planting methods exhibited significant variation in respect of all the characters studied. The maximum grain yield (3.60 t/ha) was obtained from bed planting. Different levels of nitrogen significantly influenced on yield and yield attributing parameters of wheat. The highest grain yield (3.70 t/ha) was recorded from 150 kg N per hectare. The interaction effects of planting methods and nitrogen levels showed the significant difference in respect of spike/m², spike length and grain yield. Highest grain yield (4.04 t/ha) was obtained at bed planting using 150 kg N per hectare. Though higher rate of N are used but lodging of plant height was not noticed. The correlation analysis showed that the rate of change of grain yield was highly dependent upon the rate of change of yield contributing characters of wheat.

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