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Effect of Transplanting Date on Growth and Yield of Advanced Lines of Transplanted Aman Rice

Amena Sultana
Agronomy Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

Nilufar Yasmin Shaikh
Biotechnology Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh.

Mst. Selima Zahan
Agronomy Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

Md. Adil Badshah
Agronomy Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

Romana Akter
Agronomy Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

Mohammad Issak
Department of Soil Science, Sher-e-Bangle Agricultural University, Dhaka-1207, Bangladesh.

Abstract/ Executive Summary:

This research was conducted in order to investigate the effects of time of planting on the grain yield and yield components of three advanced lines of rice under the Agro Ecological Zone (AEZ), Modhupur Tract. The research was conducted as a split plot using Randomized Complete Block Design (RCBD) with three replications in the Aman season of 2016 under the research field of Bangladesh Rice Research Institute (BRRI), Gazipur. In this research, the dates 01 August, 16 August, 31 August and 16 September were considered as the main factor in the main plots, and the advanced lines/varieties BR(Bio)9786-BC2-119-1-1, BR(Bio)9786BC2-132-1-3 and BRRI dhan49 (check variety) were regarded as the secondary factors in the sub plots. The results showed that planting time significantly affected the plant height, the number of panicle per meter square, the number of tillers per meter square, the number of grains per panicle, 1000-grain weight and grain yield. Among the cultivars, the advanced line BR(Bio)9786-BC2-119-1-1 and BR(Bio)9786-BC2-132-1-3 produced significantly higher plant height, the number of panicle, the number of tillers, the number of grains per panicle, 1000grain weight and grain yield than check variety BRRI dhan49 in all transplanting dates. The advanced line BR(Bio)9786-BC2-119-1-1 and BR(Bio)9786-BC2-132-1-3 produced average 1.02 and 0.57 t ha^-1 higher yields respectively over the check variety BRRI dhan49 under the transplanting date 01 August to 31 August. The highest growth duration (130-146 days) was observed for the check variety BRRI dhan49 that followed by BR(Bio)9786-BC2-132-1-3 (132141 days) and BR(Bio)9786-BC2-119-1-1 (130-140 days).

Keywords: Rice, Transplanting dates, Advanced lines, Grain yield, Yield components

Location: BRRI farm, Gazipur, Bangladesh

Start Date: 00-00-2016

End Date: 00-00-2016

Program Area: Crop-Soil-Water Management

Commodity: Rice, T. Aman

Objectives:

To determine the optimum planting time of T. Aman advance rice lines with higher grain yield to select best advance line to release as variety.

Methodology:

The experiment was conducted at BRRI farm, Gazipur in T. Aman 2016, to find out optimum transplanting date of two advanced lines. Advanced lines, BR(Bio)9786-BC2-119-1-1 and BR(Bio)9786-BC2-132-1-3 including the check variety BRRI dhan49. The experiment consisted of four transplanting dates viz. 01 August, 16 August, 31 August and 16 September. Twenty-five days old seedling was transplanted with 20 cm × 20 cm spacing and one seedling per hill. The experiment was laid down in spilt-plot design, where planting date was in the main plot and the advanced lines were in the sub-plot. Fertilizers were applied @76-12-52-12 kg ha^-1NP-K-S, respectively. All fertilizers were applied during final land preparation but urea was applied as top dress in three equal splits at 10, 30 and 45 DAT (day after transplanting). The soil at the study site is of fine silty clay loam type. The location previously had a 3-season rice. The field was cleared and manually ploughed to provide for cultivation. Each plot was demarcated with a 40 cm walk way and a plot size of 3.2 m x 2.2 m. Weeds were manually controlled (2 times) 20 days after sowing and at maximum tillering stage. Also, Durs ban was applied at 50 ml/16 liters at panicle initiation stage to control stem borer infestation within the field. At harvest, the middle portion of each plot (5 m²) was harvested and the grain weight (grain yield was reported at 14% moisture) represent the plot after drying (Saito et al., 2006). Twenty five selected rice hills were sampled from inside the harvested area for measurement of plant height, panicle number, and number of tillers and averaged. Data were collected on days to 50% flowering, plant height (PH), number of tillers per meter square, number of panicle per meter square, 1000-grain weight. Except for days to flowering, all other data were collected at harvest. Harvesting was undertaken within 5 months after planting when 50% of the crop had reached physiological maturity; PH was measured in cm while GW (grain weight) was taken in g using an electronic scale. Plant height (PH) was measured from the plant base to the topmost part with a tape measure. Statistical analysis was performed using statistics 10.0 software.

Source of Information: Res. Agric. Livest. Fish. Vol. 7, No. 1, April 2020 : 01-07. ISSN : P-2409-0603, E-2409-9325

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The advanced lines, BR (Bio) 9786-BC2-119-1-1 and BR(Bio)9786-BC2-132-1-3 produced significantly highest grain yield than check variety BRRI dhan49. The advanced line BR(Bio)9786-BC2-119-1-1 and BR(Bio)9786-BC2-132-1-3 produced about 1.0 and 0.57 t ha^-1 higher yield respectively over the check variety BRRI dhan49 under the transplanting date 01 August to 31 August. The line BR(Bio)9786-BC2-119-1-1 had higher the number of panicles, the number of tillers, the number of grains per panicle, 1000-grain weight and grain yield than the check variety BRRI dhan49. The highest growth duration (130-146 days) was observed for the check variety BRRI dhan49 that followed by BR(Bio)9786-BC2-132-1-3 (132-141 days) and BR(Bio)9786BC2-119-1-1 (130-140 days). Among the genotypes, the line BR(Bio)8214-23-1-3-1 may be considered as a good advanced line in T. Aman season for release as high yielding Aman variety.

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