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Performance of Modern Boro Rice Varieties Under Different Planting Methods

M.M. Kamal
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

M.P. Anwar
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

F. Alam
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

S.M.A. Hossain
Department of Agronomy, Bangladesh Agricultural University, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during January-May 2006 to determine the effect of variety and planting method on the yield of boro rice. Four varieties viz., BINADHAN-5, BINADHAN-6, BRRI dhan28 and BRRI dhan29, and three planting methods viz., transplanting method, drum seeding and line sowing were included as experimental treatments. The experiment was laid out in a randomized complete block design with three replications. BINADHAN-5 produced the highest grain yield (4.61 t ha-1) which was the consequence of highest number of effective tillers hill-1 and highest number of grains panicle-1. Among the planning methods, transplanting method produced the maximum grain yield (4.59 t ha-1) because of highest number of grains panicle-1. In case of effect of interaction of BINADHAN-5 and transplanting method produced the highest grain (5.20 t ha-1) yield. It may be concluded that the variety BINADHAN-5 may be grown following transplanting method for higher grain yield in boro season.

Keywords: Variety, Planting method, Grain yield, Boro rice

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-01-2006

End Date: 00-05-2006

Program Area: Crop-Soil-Water Management

Commodity: Rice, Boro rice

Objectives:

The availability of short-duration, photosensitive, semi-dwarf and modern rice varieties has proved to be a boom for direct wet seeded rice (Rahman, 1991). Wet sowing by drum seeder is gaining popularity day by day as it not only curtails the production cost but also reduces the growth duration of rice. In the light of the above background, the present piece of research work was undertaken to find out the suitable variety and planting method for boro rice.

Methodology:

The research work was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during the period from January to May 2006 (boro season) in order to determine the effect of variety and method of planting on the yield of boro rice. Geographically the experimental site is located at 24°75' N latitude and 90°50' E longitude at an elevation of 18 m above the mean sea level. The site belongs to the non-calcareous dark gray floodplain soil under the Old Brahmaputra Floodplain Agro-ecological Zone (UNDP and FAO, 1988). The experimental field was a medium high land with silty clay loam soil having pH value of 7.3. The treatments included in the experiment were (i) four rice varieties, namely, BINADHAN-5, BINADHAN-6, BRRI dhan28, BRRI dhan29, and (ii) three methods of planting, namely, transplanting, drum seeding and line sowing. The experiment was laid out in a two factors randomized complete block design with three replications. The unit plot size was 4.0 m x 2.5 m.

The land was well prepared and fertilized with recommended rate of fertilizers i.e. urea (270 kg ha-1), triple super phosphate (180 kg ha), muriate of potash (120 kg he), gypsum (70 kg he) and zinc sulphate (10 kg ha-1). Sprouted seeds were sown (by drum seeder or manually) for drum seeding and line sowing methods, in the main field on 1 December. And, in case of transplanting method, sowing date (in the seed bed) was the same i.e. 1 December, but transplanting was done on 10 January in the main field. Thus all the treatments got the same crop age. Intercultural operations, fertilization, weeding, water management, and pest management were done as and when necessary. Harvesting was done when 90% of the grains become golden yellow in color. Five hills were randomly selected (excluding border hills) from each unit plot prior to harvest for recording data.

Data on plant height, number of total tillers hill-1, number of effective tillers hill-1, number of non-effective tillers hill-1, grains panicle-1, sterile spikelets panicle-1, 1000-grain weight, grain yield, straw yield, biological yield, and harvest index were recorded and calculated at harvest. Total growth duration (TGD) was counted under different planting methods. The recorded and calculated data (except TGD) were analyzed statistically and mean differences were adjudged by Duncan's Multiple Range Test (DMRT).

Source of Information: J. Bangladesh Agril. Univ. 5(1): 43-47, 2007 ISSN 1810-3030

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It may, therefore, be concluded that the transplanting method performed the best in terms of yield. On the other hand, the drum seeding or line sowing method may be chosen considering the total growth duration to ease the accommodation of the next crop. Though the economic analysis of this study was not performed during the time of experimentation, without any economic analysis, it is clear that as line sowing or drum seeding method does not require seedbed preparation followed by seedling uprooting and transplanting so, it would obviously cost less than transplanting method. Therefore, though the transplanting method produced the highest yield either line sowing or drum seeding method may be a good option for our resource-poor farmers. Among the varieties, BINADHAN-5 was the best yield performer followed by BRRI dhan29. But BRRI dhan28 may be chosen considering its minimum TGD.

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