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Effect of Planting Methods on the Yield and Yield Attributes of Short Duration Aman Rice

Md. Masud Rana
Scientific Officer
Agronomy Division, Bangladesh Rice Research Institute, Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

To find out the effect of planting methods on the yield and yield attributes of short duration aman rice varieties a field trial was conducted at the farm of Bangladesh Rice Research Institute, Gazipur, during July to November 2012. The treatments comprised of three BRRI released high yielding varieties viz., BRRI dhan39, BRRI dhan49 and BRRI dhan57 and three planting methods viz.; direct seeding of dry seed, direct seeding of sprouted seed and transplanting. It was a factorial experiment conducted in a Randomized Complete Block Design with three replications. Planting methods had significant effect on growth duration of rice. The rice crop established with direct seeding of dry and sprouted seed matured 7 days earlier than transplanting. The variety BRRI dhan39 gave the highest yield (4.964 t ha^-1) when grown with direct seeding of sprouted seed. The highest net return (23362.00 BDT ha^-1) and cost benefit ratio (1:1.49) was observed in direct seeding of sprouted seed method. So, direct seeding of sprouted seed might be the best planting method because of about 19.94% production cost is reduced due to the omission of seedling raising and transplanting operations as well as reduction in the length of crop cultivation period.

Keywords: Direct seeding, Dry and sprouted seed, Growth duration, Shot duration, Aman rice

Location: BRRI farm, Gazipur

Start Date: 00-07-2012

End Date: 00-11-2012

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To evaluate the effect of planting methods on the yield and yield attributes of short duration aman rice varieties

Methodology:

The experiment was conducted at the farm of Bangladesh Rice Research Institute, Gazipur, during July to November 2012 to find out the effect of planting methods on the yield and yield attributes of short duration aman rice varieties. Soil of the experimental field belongs to the Shallow Red Brown Terrace Soils. The region belongs to sub-tropical humid climate. The treatments comprised of three BRRI released high yielding varieties viz., BRRI dhan39, BRRI dhan49 and BRRI dhan57 and three planting methods viz.; direct seeding of dry seed, direct seeding of sprouted seed and transplanting. It was a factorial experiment conducted in a Randomized Complete Block Design with three replications. Layout of the experiment was done on 23 July 2012 with inter plot spacing of 1.0 m and inter block spacing of 1.0 m. The size of each unit plot was 5.0 m × 4.0 m. Continuous line sowing of dry seed @ 40 kg ha^-1 was done manually on 26 July, 2012 with a line to line distance of 20 cm in the assigned plots. Seeds were immersed into water in a bucket on the same date of direct seeding of dry seed for 24 hours. These were then taken out of water and kept tightly in gunny bags. The seeds started sprouting after 48 hours which were suitable for sowing. The sprouted seeds were sown in line (line to line distance 20 cm) in the assigned plots by manually on July 29 July 2012 and also sown in the nursery bed for raising seedling which was prepared previously. 25 days-old seedlings were transplanted (2-3 seedlings hill^-1) on 23 August 2012 with a spacing of 20 cm×15 cm. The field was fertilized with urea, triple super phosphate, muriate of potash, gypsum and zinc sulphate at 127, 52, 82, 60 and 7 kg ha^-1, respectively. Except urea, whole amounts of other fertilizers were applied during final land preparation. Urea was top-dressed in three equal installments i.e., during sowing/transplanting, tillering stage and 7 days before panicle initiation. All agronomic practices were performed uniformly for all the treatments. Maturity of rice occurred at different times irrespective of planting method and variety. Harvesting was done from 25 October, 2012 to 22 November, 2012 depending upon the maturity of the three varieties. The harvested rice was then dried, threshed and cleaned and necessary data were collected. The collected data were compiled and tabulated for statistical analysis. Data were analyzed statistically for analysis of variance (ANOVA) following the method described by MSTAT C computer software was used to carry out statistical analysis. Partial economic analysis was done based on the prevailing market price.

Source of Information: Proceedings of the BRRI Annual Report, 2013

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 10000

Total Budget (Tk.) : 10000

Achievement/Findings:

Rice grown with direct seeding of spouted seed method matured 7 days earlier and produced the highest grain yield which is economically profitable. Therefore, direct seeding of spouted seed may be recommended as planting method of rice for better yield.

Knowledge Management: Report/Proceedings