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Performance of BRRI Dhan32 in Sri and Conventional Methods and Their Technology Mixes

M.Z. Hossain
Department of Agronomy, BAU, Mymensingh - 2202, Bangladesh

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

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

M.R.A. Sarker
Department of Agronomy, BAU, Mymensingh - 2202, Bangladesh

A.A. Mamun
Department of Agronomy, BAU, Mymensingh - 2202, Bangladesh

Abstract/ Executive Summary:

An experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh from July to December, 2001 to study the performance of BRRI dhan32 in SRI and conventional methods and their technology mixes. The experiment was laid out in a split-plot design with three replications. The treatments used in the experiment consisted of (A) two planting methods viz., i) SRI planting method and ii) conventional planting method, (B) two types root placement e.g., i) J shape and ii) L shape and (C) three sources of fertilization viz., i) chemical fertilizer (N-60, P₂O₅-40, K₂O-40, S-10, Zn-5 kg ha^-1, respectively) ii) organic fertilizer (cowdung, 10 t ha^-1) and iii) 50% chemical fertilizer + 50% organic fertilizer. Grain and straw yields were the highest (5.6 and 5.98 t ha^-1, respectively) in SRI planting method. The highest grain yield of SRI planting method was mostly the outcome of higher total number of tillers hill^-1, highest panicle length and highest number of grains panicle. Conventional planting method produced the lowest grain and straw yields (3.65 and 4.29 t ha^-1, respectively). Among root placement methods L shape root placement found to be better and produced higher grain yield (4.97 t ha^-1). Fertilization with 50% chemical fertilizer + 50% organic fertilizer performed the best regarding both grain and straw yields. The highest grain yield (5.04 t ha^-1) and straw yield (5.67 t ha^-1) were produced when 50% chemical + 50% organic were applied while the lowest ones were recorded in chemical fertilizer.

Keywords: SRI technique, Root placement method, Fertilization, Rice yield

Location: Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh

Start Date: 00-07-2001

End Date: 00-12-2001

Program Area: Knowledge Management

Commodity: Rice

Objectives:

To study the performance of BRRI Dhan 32 in SRI and conventional methods and their technology mixes.

Methodology:

The experiment was conducted at the Agronomy Field Laboratory of Bangladesh Agricultural University, Mymensingh from July to December 2001 to study the performance of BRRI Dhan 32 in SRI and conventional methods and their technology mixes. The experimental treatments included (A) two planting methods (viz., SRI and conventional planting methods) (B) two types of root placement (viz., J shape and L shape root placement) and (C) three sources of fertilization [viz., chemical fertilizer (N-P₂O₅-K₂O-S-Zn-@ 60-40-40-10-5 kgha^-1, respectively), organic fertilizer (cowdung, 10 t ha^-1) and 50% chemical fertilizer + 50% organic fertilizer]. The experiment was laid out in split-plot design with three replications. The unit plot size was 10 m² (4.0 H 2.5 m) and space between main plots and subplots were 1.5 and 1 m, respectively. 15-day old seedlings were transplanted on 26 July 2001 at the rate of l seeding hill^-1 with 25 H 25 cm spacing in case of SRI method while in conventional planting method, 25-day old seedlings were transplanted at the rate of 3 seedlings hillG¹ maintaining the spacing 25 H15 cm. In SRI method, due to high weed infestation weeding was done by hand pulling at 7day intervals starting from 12 DAT to 47 DAT. On the other hand, in conventional method, weeding was done only twice by hand pulling at 25 and 45 DATs. Since water management is an important factor for SRI technique, irrigation was done once a week due to lack of sufficient rainfall during the study period. But water stagnancy was avoided by maintaining drainage system. While in case of conventional method irrigation was done thrice during the whole growing period. Five hills (excluding border hills) from each plot were selected randomly and sampled just before harvesting the whole plot to record necessary data. The crops were harvested at full maturity which was determined when some 90% of the seeds became golden yellow in colour. Date of harvest for SRI and conventional methods were 3 November and 28 October 2001, respectively. The data on different agronomic characters were recorded from randomly selected hills in each plot and those on grain and straw yields were recorded from the whole plot harvested. Data were analyzed using the “Analysis of variance” technique and mean differences were adjudged by DMRT.

Source of Information: Journal of Agronomy, 2: 195-200, 2003; ISSN 1680-8207

Article Link (Online Journal): DOI: 10.3923/ja.2003.195.200; URL: http://scialert.net/abstract/?doi=ja.2003.195.200

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

To conclude it may be said that BRRI dhan32 should preferably be grown under SRI technique following L shape root placement method using 50% chemical fertilizer + 50% organic fertilizer to have better harvest.

Knowledge Management: Journal