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Evaluation of Aus Rice (oryza Sativa L.) Production in Less Irrigated Situation in Northern Region of Bangladesh

M. Sh. Islam
Agronomy Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

A.B.M. Zahid Hossain
Irrigation and Water Management Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

M.S. Miah
IAPP Project, BRRI Rangpur, Bangladesh

S.M. Shahriar
IAPP Project, BRRI Rangpur, Bangladesh

M.A.A. Mamun
Agricultural Statistics Division, Bangladesh Rice Research Institute (BRRI), Gazipur-1701, Bangladesh

Abstract/ Executive Summary:

Twenty one demonstrations and two validation trials were carried out at the farmers’ field in the northern region of Bangladesh during 2014 using Aus rice: variety BRRI dhan48 to enhance Aus (pre-monsoon) rice cultivation. Grain yields of 3.5 to 6.5 t ha^-1 were obtained from demonstrations plots conducted in different farmers’ field. The validation trial was conducted in the farmers’ field at Mithapukur and Nilphamari Sadar Upazillas using BRRI dhan28 and BRRI dhan48 as Braus (rice grown between Boro and Aus season) after harvesting potato. Grain yield of about 5.0 t ha^-1 was obtained from the rice variety BRRI dhan28, while 6.6 t ha^-1 was obtained from BRRI dhan48. BRRI dhan48, due to its shorter growth duration (100-105 days) required 2-3 less irrigation. About 28-36% less irrigation water was required during dry season when BRRI dhan48 was used as Braus instead of BRRI dhan28 as a Boro crop. About 20 to 60% higher grain yield was observed in different farmers’ field with BRRI dhan48 over BRRI dhan28, which indicated that BRRI dhan48 is a potential rice variety during Aus or Braus season. BRRI dhan48 can be cultivated after Boro harvest or as Braus after potato harvest. The variety could also decrease the pressure on ground water utilization for rice cultivation during dry season.

Keywords: BRRI dhan48, Braus, Climate change, Irrigation

Location: Bagerbazar of Pirgonj, Rangpur Batason Durgapur of Mithpukur, Rangpur, Fulgas of Lalmonirhat Sadar, Surpukur of Aditmari, Lalmonirhat, Sundra Hobi of Kaligonj, Lalmonirhat Amtoli of Rajarhat, Kurigram and Ponchapukuri of Nilphamari Sadar were selected in Rangpur region

Start Date:

End Date:

Program Area: Crop-Soil-Water Management

Commodity: Irrigation scheduling, Rice

Objectives:

The present study was undertaken to evaluate the yield performance of Aus rice, variety BRRI dhan48 and estimate the irrigation water requirement of the Aus rice compared to Boro rice at the farmers’ field of Rangpur.

Methodology:

Thirty five farmers of seven villages namely Bagerbazar of Pirgonj, Rangpur Batason Durgapur of Mithpukur, Rangpur, Fulgas of Lalmonirhat Sadar, Surpukur of Aditmari, Lalmonirhat, Sundra Hobi of Kaligonj, Lalmonirhat Amtoli of Rajarhat, Kurigram and Ponchapukuri of Nilphamari Sadar were selected in Rangpur region to introduce BRRIdhan48 as against local varieties like Parija, Vhadi etc. Selected lands were medium-high and the type of soil was light textured. Cultivation methods- Rice seeds of BRRI dhan48 was collected from BRRI Rangpur. Land was prepared by the respective farmers and basal fertilizers was applied @ of 60, 75, and 45 kg per ha, TSP, MoP and gypsum, respectively and urea was applied @ 180 kg per ha at 12 & 25 DAT following BRRI recommendation. Adaptive trial of Braus was conducted in potato growing area (Mithapukur and Nilphamari Sadar Upazilla) after harvesting potato. The most popular Boro variety BRRI dhan28 and Aus variety BRRI dhan48 were used in the adaptive trial in Braus. The seeding date was 1^st week of February and transplanting date was 2^nd week of March, 2014. Thirty five days old seedlings were transplanted for both the varieties. BRRI recommended cultural practices like weed management, irrigation, pest management were done as and when necessary. Data collection and analysis- The data on plant height, panicle m^-2, grain panicle^-1, growth duration and grain yield were collected from rice plants of 5m × 2m area from each plot with 3 replications. The grain moisture was measured just after threshing and grain yield was adjusted at 14% moisture content. Combined analysis (Programing R) was done to find out the interaction effect of genotype × environment for 21 demonstrations on BRRI dhan48 in different locations of Rangpur.

Source of Information: The Agriculturists 15(1):110-115(2017)

Article Link (Online Journal):

Funding Source:

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Potato-BRRI dhan48 - T.Aman might be the potential and profitable cropping pattern in medium lowland to medium highland area (about 80%) of Rangpur region. BRRI dhan48 is the best variety as late Boro compared to BRRI dhan28.

Knowledge Management: Journal