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Advanced Line Adaptive Research Trial (alart, Alternate Wetting and Drying): Boro, 2009

Dr. Md. Shafiqul Islam Mamin
Principal Scientific Officer
ARD, BRRI Gazipur

Biswajit Karmakar
SSO
ARD, BRRI Rajshahi

Mr. Md. Rafiqul Islam
Senior Scientist
ARD BRRI Gazipur

MF Islam
SSO
ARD BRRI Gazipur

Mr Md. Humayun Kabir
SSO
ARD BRRI Gazipur

Md. Habibur Rahman Mukul
SO
ARD BRRI Gazipur

Shamsunnaher
SO
ARD, BRRI Gazipu

Abstract/ Executive Summary:

This study was conducted at 6 locations of Gazipur, Bogra, Rangpur, Rajshahi, Kustia and Thakurgaon during Boro, 2009. Objectives of the study were to identify suitable advanced lines under alternate wetting and drying condition, evaluate the yield potential and adaptability of advanced lines at farmers' field and to get feedback information about the advantages and disadvantages of the advanced lines. Result indicate that location x genotype interaction was significant at 0.05 level for grain yield, panicles/m², filled grains/panicle, thousand grain weight (g), sterility% and growth duration. The test entries produced significantly different grain yields among the locations. But within same location the yields were not significantly different. All entries including Growth durations of the genotypes were almost similar among the locations (about 50 days). Mean plant height ranged from 85 to 93 cm. The entries were not lodged in any location. Most farmers preferred BRRI dhan28 having similar yield to that of advanced lines. A few farmers preferred IR4963-262-5-1-3-3 and IR69515-KKN-4-UBN-4-2-1-1 especially for grain size and lesser disease attack. Farmers opined that AWD method is not applicable in the sandy or sandy loam soil where frequent irrigation is needed. Weed infestation is a serious problem under AWD method.

Keywords: ALART, AWD, Rice, Grain yield, Plant height, Growth duration

Location: Gazipur, Bogra, Rangpur, Rajshahi,Kustia and Thakurgaon

Start Date: 01-07-2008

End Date: 30-06-2009

Program Area: Knowledge Management

Commodity: Performance

Objectives:

To identify suitable advanced lines under alternate wetting and drying condition during Boro season.
To evaluate the yield potential and adaptability of 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, IR74963-262-5-1-3-3, IR69515-KKN-4-UBN-4-2-1-1 and PSBRC82 along with BRRI dhan28 as std check were tested in 6 locations, Gazipur, Bogra, Rangpur, Rajshahi, Kustia and Thakurgaon during Boro, 2009. The trials were replicated thrice in each location. The unit plot size for each variety/line was 37.8 m² (5.4m x 30 rows). Seedling age varied from 35-40 days among locations. Seedlings were transplanted at 25 x 15 cm spacing. Fertilizers were applied at 100: 80: 60: 10: 3 kg. N : P₂O₅ : K₂O : S : Zn/ha. All fertilizers except urea were applied as basal and urea was applied in 3 equal splits at 10-15, 30-35 and 50-55 (at PI stage) days after transplanting (DAT). 30 cm long perforated PVC pipe was installed to monitor the water table at the field. Three PVC pipes were installed in each trial to facilitate AWD irrigation. Standard management practices like weeding, insecticide spray and other cultural operations were followed as and when necessary. Yield and yield components were recorded in time. Feedback from farmers was also recorded. For yield estimation, 10 m² sample area from each plot were harvested at maturity and grain yields were adjusted to 14% moisture content.

Source of Information: Proceedings of BRRI Annual Internal Research Review, 2008-2009

Article Link (Online Journal):

Funding Source:

1. Government

Budget: 72,000

Total Budget (Tk.) : 72,000

Achievement/Findings:

Considering yield, growth duration and overall performances none of the advanced lines was found superior to BRRI dhan28 and hence none could be considered in proposed variety trial (PVT).

Knowledge Management: Report/Proceedings