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Advanced Line Adaptive Research Trial (alart): Rainfed Low Land Rice (rlr), T. Aman, 2009

MSI Mamin
PSO
ARD, BRRI, Gazipur

MR Islam
SSO
ARD, BRRI, Gazipur

MH Kabir
SSO
ARD, BRRI, Gazipur

MF Islam
SSO
ARD, BRRI, Gazipur

MA Islam
PSO
ARD, BRRI, Sonagazi

MHR Mukul
SO
ARD, BRRI, Gazipur

S Nahar
SO
ARD, BRRI, Gazipur

Abstract/ Executive Summary:

Location x genotype interaction was significant at 0.05 level for grain yield, growth duration, panicles m^-2, filled grains panicle^-1, thousand grain weight, sterility% and plant height. Guti Swarna (ck) gave consistently better yield (2.47- 5.90 tha-1) than other lines (1.94-5.24 t/ha) in all locations having average yield of 4.47 tha^-1. However, BR7155-20-1-3 produced almost similar yield like Guti Swarna (ck). Although the BR7870-*5(Nils)-7-HR1 and BR7870-*5(Nils)-10-HR3 lines were found to be of short duration (121-123 days) but their yields were low. BR7155-20-1-3 gave almost same yield (4.31 t ha^-1) as ck. Guti Swarna (4.47 tha^-1) having similar growth duration of 140-142 days. BR7155-20-1-3 and Guti Swarna found similar in plant height, field grains panicle^-1 and sterility percent. All advanced lines were infected by Sheath Blight disease at different level of scores in most of the locations but all entries were lodging tolerant. All the entries were slightly infested by some insects like, stem borer, leaf folder, rice bug etc. but did not hamper the grain yield severely.

Keywords: Plant height, Grain yield, Rainfed low land rice, Environment

Location: Naogaon, Dinajpur, Jhinaidha, Natore, Gaibandha, Gazipur, Jessore, Kustia, Chapainawabgonj and Rajshahi

Start Date: 01-07-2009

End Date: 31-12-2009

Program Area: Variety and Species

Commodity: Rice

Objectives:

to test the yield potential and adaptability of rainfed lowland rice advanced lines at farmers’ field under different agro- ecological conditions of Bangladesh
To generate the feedback about the advantages and disadvantages of the lines from extension workers and farmers.

Methodology:

Four advanced lines: BR7870-*5(Nils)-7-HR1, BR7870-*5(Nils)-10-HR3, BR7155-20-1-3 along with Guti Swarna as check were tested in Naogaon, Dinajpur, Jhinaidha, Natore, Gaibandha, Gazipur, Jessore, Kustia, Chapainawabgonj and Rajshahi during T. Aman, 2009. The trials were replicated thrice in each location. The unit plot size for each entry was 15 m². Seeding time was 1 July, 2008 and transplanting was done during 31 July-7 August, 2009. Seedling age varied from 30-37 days among locations under varied circumstances. Seedlings were transplanted at 20 x 15 cm spacing. Fertilizers were applied at 190: 143: 190: 142: 12 kg/ha as Urea : TSP : MP: Gypsum: ZnSO₄. All fertilizers except urea were applied as basal and urea was applied in 3 equal splits at 10-15 DAT, 30-35 DAT and PI stage. Other standard management practices were followed as and when 15 necessary. Appropriate measures were taken to control insect pests. Date of seeding, transplanting, flowering, maturity, plant height, lodging tolerance, pest and disease incidence, yield and yield components were recorded. Feedback from farmers and DAE personnel were also recorded. For yield estimation, 10 m²sample area from each plot was harvested at maturity and grain yields were adjusted to 14% moisture content.

Source of Information: Proceedings of the BRRI Annual Internal Review for 2009-2010

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Based on farmers’ views of all locations, their first preference was for Guti Swarna for higher yield and medium bold grain and high market value. Second preference was BR7155-20-1-3 especially for grain appearance. Considering grain yield, growth duration and farmers’ perceptions, none of the lines found suitable for proposed variety trial (PVT).

Knowledge Management: Report/Proceedings