Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Tiller Dynamics and Dry Matter Production of Transplanted Rice as Affected by Plant Spacing and Number of Seedling Per Hill

Mirza Hasanuzzaman
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

Kamrun Nahar
Department of Agricultural Botany, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

T.S. Roy
Department of Agronomy, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M.L. Rahman
Farm Division, Sher-e-Bangla Agricultural University, Dhaka-1207, Bangladesh

M.Z. Hossain
Genetic Resources and Seed Division, Bangladesh Jute Research Institute, Dhaka, Bangladesh

J.U. Ahmed
Department of Agricultural Economics, Sylhet Agricultural University, Sylhet, Bangladesh

Abstract/ Executive Summary:

The experiment was conducted at the Agronomy field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during August, 2008 to January 2009 to find out the optimum plant spacing and number of seedling per hill in relation to tillering and dry matter accumulation of transplanted rice plant. The experiment was carried out with three plant spacings (S₁ =15 cm × 20 cm, S₂= 20 cm × 20 cm and S₃ = 25 cm × 20 cm) and four different seedling numbers (H₁ = 1 seedling hill^-1, H₂ = 2 seedlings hill^-1, H₃ = 3 seedlings hill^-1 and H₄ = 4 seedlings hill^-1). The rice variety used in this experiment was BRRI dhan46 which is late variety for Aman season. The results revealed that both the plant spicing and no. of seedlings hill^-1 showed a significant effect on the tillering and dry matter yield of transplanted rice. At initial stages the treatments did not show any significant effect. At all the growth stages wider row spacings (25 cm × 20 cm) and higher no. of seedlings per hill (3 and 4) showed maximum tillering. Closer plant spacing reduced the number of effective tillers and increases the tiller mortality. Wider spacing coupled with higher no. of seedlings hill^-1 (4) accumulated maximum amount of dry matter. But at all the cases transplanting more than 2 seedlings in a hill did not show significantly higher results. Productivity of tillers as well as dry matter yield was lower with closer spacing and transplanting single seedlings hill^-1.

Keywords: Paddy, Growth, Tiller mortality, Photosynthate, Biomass

Location: Agronomy field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh

Start Date: 00-08-2008

End Date: 00-01-2009

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To determine the optimum plant spacing and number of seedling hill^-1 and the interactions between them on the tillering behavior and dry matter yield of late transplanted Aman rice cv. BRRI dhan46

Methodology:

The experiment was conducted at the Agronomy field of Sher-e-Bangla Agricultural University, Dhaka, Bangladesh during August, 2008 to January 2009. The soil of the experimental field belongs to the Shallow Red Brown Terrace Soils. The soil of the experimental field belongs to the Shallow Red Brown Terrace Soils. The experimental site was under the Agro-ecological zone of Modhupur Tract-AEZ-28, situated at 23°41/ N latitude and 90°22/ E longitude. The experiment was carried out with three plant spacings (S₁ =15 cm × 20 cm, S₂= 20 cm × 20 cm and S₃ = 25 cm × 20 cm) and four different seedling numbers (H₁ = 1 seedling hill^-1, H₂ = 2 seedlings hill^-1, H₃ = 3 seedlings hill^-1 and H₄ = 4 seedlings hill^-1). The rice variety used in this experiment was BRRI dhan46 which is a late variety for Aman season. The experiment was laid out in a randomized completely block design (RCBD) with three replications. Seedlings of 30 days old were uprooted from the nursery beds carefully. Seedlings were transplanted in the well-puddled experimental plots on September 15, 2008. Spacings were given as per treatments. Soil of the plots was kept moist without allowing standing water at the time of transplanting. Seedlings were placed in the hills as per treatments. A fertilizer dose of 250-120-70-10 kg N, K, S and Zn ha^-1 as urea, muriate of potash, gypsum and zinc sulphate were applied in the field. Phosphorus fertilizer was need as per treatment from triple super phosphate. Full dose of triple super phosphate, muriate of potash, gypsum and zinc sulphate were applied as basal dose at the time of final land preparation and incorporated well into the soil. Besides, cowdung at the rate of 10 t ha^-1 was applied before final ploughing. Urea was applied in three equal splits at 15, 30 and 55 days after transplanting (DAT) for all varieties. To minimize weed infestation, manual weeding through hand pulling was done three times during entire growing season. The first weeding was done at 15 days after transplanting (DAT) followed by second and third weeding were done at 15 days interval after first and second weeding. Irrigation was done by alternate wetting and drying from transplanting to maximum tillering stage. From panicle initiation (PI) to hard dough stage, a thin layer of water (2-3 cm) was kept on the plots. Water was removed from the plots during ripening stage. Plants were infested with rice stem borer and leaf hopper to some extent which were successfully controlled by applying three times of Diazinon® 60 EC and one times of Ripcord. Crop was protected from birds during the grain filling period. Five hills from each plot were uprooted at each time period time period and oven dried at 85±5°C for 72 hours from which the dry matter weight was recorded at 20 days interval up to harvest. After completion of the data collection, efforts have been made to process and tabulated the collected data. The data was analyzed using MSTAT-C programme. The mean differences among the treatments were compared by multiple comparison tests using Duncan’s Multiple Range Test (DMRT).

Source of Information: Academic Journal of Plant Sciences 2 (3): 162-168, (2009)

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Closer plant spacing reduced the number of effective tillers and increases the tiller mortality. Wider spacing coupled with higher no. of seedlings hill^-1 (4) accumulated maximum amount of dry matter. Treatment S₁H₁ showed the lowest amount dry matter at all the growth stages. At maturity the highest values was produced with the treatment S₃H₃because 4 seedling hill^-1 resulted an intra plant competition in an unit area (hill).

Knowledge Management: Journal