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Effect of Population on Tillering, Growth, Yield Components and Yield of Wheat

S. K. Roy
Scientific o/ftcer
Agronomy Division., BAR, Joydebpur, Gazipur 1701, Bangladesh

P. K. Biswas
Agronomy Division., BAR, Joydebpur, Gazipur 1701, Bangladesh

Abstract/ Executive Summary:

Two experiments; were conducted during 1987-88 and 1988-89 with 100, 200, 300, 400, 500 and 600 seeds per m² to study tillering, dry matter production, ear growth and yield components or wheat. umber or tillers increased steadily upto 40 days after sowing and 100 seeds produced the highest number of tillers (4/plant). Dry matter production per plant was highest (8g/plant) with 100 seeds/m². There was no significant difference in the production of car dry matter between 100 and 200, 300 and 400 and 500 and 600 seeds/m². ! \umber or grains/car was the highest with 300 seeds/m² which was not significantly different with 400 seeds/m² for 1987·88 but for 1988·89 number of grains/car was the highest with 100 seeds per m². Grain yield was significantly higher with 400 seeds/m²^. Grain yield was significantly higher with 400 seeds/m²^. for both years but straw yield was the highest with 500 seeds/m²^.. There was significant correlation between grain yield and number of ear/m² and between grain yield and number of grains/m² suggesting possible yield increase with increased number of grains/m².

Keywords: Yield components, Tillering, Ear growth, Seed rate, Wheat

Location: Regional Agricultural Research Station, Bangladesh Agricultural Research Institute, Hathazari, Chittagong, Bangladesh

Start Date: 15-11-1987

End Date: 30-05-1989

Program Area: Crop-Soil-Water Management

Commodity: Wheat

Objectives:

To investigate the effect of different plant population on tillering, dry matter production of individual plants and on number of cars of wheat.

Methodology:

The experiments were conducted at the Regional Agricultural Research Station, Hathazari, Chittagong during 1987-88 and 1988-89 growing seasons. The soil was a silt loam with pH 5.5. The monthly average temperatures during 1987-88 were 25.0, 20.5, 19.2, 22.4 and for 1988-89 were 25.5, 22.0,17.4, 21.8 for November, December, January, February, respectively which was higher than any other parts of Bangladesh (DBS, 1989). The experiment was laid out in a randomized complete block design with four replications. The treatments were 100, 200, 300, 400, 500 and 600 seeds/m². Wheat (Triticum aestivwn L.) cv. Kanchan was used in this experiment. This was developed by Wheat Research Centre of Bangladesh Agricultural Research Institute and have prolific growth habit giving 5-6 tillers and 2-3 fertile ears/plant under normal growing conditions. Seeds were sown on 23 November during 1987-88 and 15 November during 1988-89 in solid rows of 20 em wide. The plot size was 4 x 5 m with sufficient inter-plot space. The crop was fertilized with 100, 60, 40 and 20 kg N, P₂0₅. K₂0 and S/ha supplied from, urea, TSP, MP and gypsum, respectively. One weeding at 20 days after sowing (DAS) and three irrigation were made at 25, 45 and 65 DAS to raise the crop.

Source of Information: Ann. Bangladesh Agric . 1(2): 81-85, 1991

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Thus it appeared from the results that it was not possible to increase ear population of wheat in Chittagong region through tillering. However, by planting 300 to 400 seeds through a seed rate of 150 to 180 kg/ha, a threshold yield is possible to achieve in hot and humid Chittagong region of Bangladesh.

Knowledge Management: Journal