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Evaluation of Some Rice Genotypes Suitable for Low Water Content in Different Agro-ecological Condition of Bangladesh in Boro 2014

MR Islam
Principal Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

MA Islam
Principal Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

B Karmakar
Senior Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

S Parveen
Senior Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

MHR Mukul
Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

S Nahar
Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

A Zahan
Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

R Barua
Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

MR Biswash
Scientific Officer
Adaptive Research Division Bangladesh Rice Research Institute Gazipur, Bangladesh

Abstract/ Executive Summary:

A vast area of Bangladesh is composed by sandy type soil where water holding capacity is very low and irrigation water is drained out very quickly just after irrigation and rain in rice field. On the other hand, extracting underground water for irrigation purpose is being posed as a big threat for environment, which is being practiced very frequently in most of the areas of Bangladesh for rice cultivation in dry season. We have to come back from this situation for our survival and reduce the dependency on underground water by developing rice varieties those need low water. Among the entries, the genotype IR83140-B-36-B-B produced the highest mean grain yield (7.32 t/ha) ranged from 6.15 t/ha (Rajshahi) to 7.97 t/ha (Lalmonirhat). IR83142-B-71-B-B gave the 2^nd highest mean yield (6.66 t/ha) followed by PSBRC82 (6.43 t/ha). All the advanced lines except PSBRC82 gave higher yield than BRRI dhan28. PSBRC82 gave the comparable yield to that of BRRI dhan28. The highest yielder IR83140-B-36-B-B had the highest growth duration (158 days) followed by IR83142-B-71-B-B (153 days) and PSBRC82 (152 days). The shortest growth duration (148 days) was found in BRRI dhan28. Mean 1000-grain weight of the tested genotypes ranged from 24.5-26.6 g which was much more higher than BRRI dhan28 (22.5 g). The highest 1000-grain weight (26.6g) was in IR83142-B-71-B-B followed by IR83140-B-36-B-B (24.8 g) It indicated that the grain size is still better in BRRI dhan28 than those of advanced lines. Although the growth duration was longer (5-10 days) than the check varieties BRRI dhan28, most farmers preferred the tested entries IR83140-B-36-B-B and IR83142-B-71-B-B for its higher yield, bold grain, lodging tolerant, green erect flag leaf and freeness from insect and disease attack.

Keywords: Aerobic advanced lines, Grain yield, Low water content, Water holding capacity

Location: West byde (BRRI Gazipur), Rajshahi (Godagari), Natore (Sadar), Lalmonirhat (Sadar), Rangpur (Sadar), Dinajpur (Sadar) and Thakurgaon (Sadar).

Start Date: 00-00-2013

End Date: 00-00-2014

Program Area: Variety and Species

Commodity: Rice

Objectives:

To evaluate the yield potential and adaptability of aerobic advanced breeding lines at farmers’ field in different agro-ecological conditions.
To get feedback information about the advantages and disadvantages of the advanced lines from farmers and DAE personnel.

Methodology:

Three advanced lines IR83140-B-36-B-B, IR83142-B-71-B-B and PSBRC82 along with BRRI dhan28 as check were tested in West byde (BRRI Gazipur), Rajshahi (Godagari), Natore (Sadar), Lalmonirhat (Sadar), Rangpur (Sadar), Dinajpur (Sadar) and Thakurgaon (Sadar) during Boro 2014. The plot was selected in a representative Boro area and high land and free from water stagnation. It was selected in those areas where water holding capacity of soil is comparatively low and water is drained out very quickly after irrigation. The unit plot size was 20 m² (5 m x 4 m). Seeding time was 05 December, 2013 and the seedling ages were varied from 40-45 days among the locations under varied circumstances. Seedlings were transplanted at 25 cm x 15 cm spacing. Fertilizers were applied at 120: 20: 60: 20: 4 kg NPKSZn /ha. Days to flowering (50%) and maturity (80%) were recorded in time. Uniform management practices were all the locations. Plant height was measured from 10 randomly selected plants from center and four corner of each plot excluding border area. At maturity, panicles were counted from 1 m² in each replication. From the center of each plot, 10-m² area was harvested for determination of grain yield at maturity. Grain yield was adjusted to 14% moisture content, and expressed in t ha^-1. Data gathered in the experiments were statistically analyzed using statistical software CropStat7.2 and means were compared with the least significant difference (LSD) test.

Source of Information: Proceedings of the BRRI Annual Internal Review for 2013-14

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Considering the performance of the advanced materials under low water condition (Aerobic) and farmers’ opinion the tested entries IR83140-B-36-B-B and IR83142-B-71-B-B may be suitable for Proposed Variety Trial (PVT).

Knowledge Management: Report/Proceedings