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Effect of Harvest Time After Flowering for Producing Quality Seed of Rice

Md. Abdulah Al Mamun
SSO
Farm Management Division, BRRI, Gazipur-1701

Dr. K.P. Halder
CSO and Head
Farm Management Division, BRRI, Gazipur-1701

Md. Rezaul Manir
SO
Farm Management Division, BRRI, Gazipur-1701

Abstract/ Executive Summary:

This experiment was conducted at the West Byde of BRRI farm, Gazipur during boro 2008-09 season to find out an appropriate harvest day for producing quality seed of rice. The treatments were five harvesting time i.e. 2 days interval from 22 to 30 days after flowering. The treatments were arranged in a Randomized Complete Block design with three replications. Forty five days old seedlings of BRRI dhan29 was transplanted 3 seedlings hill^-1 maintaining 20 cm x 20 cm spacing. Harvesting of seed at 30 days after flowering produced highest number of spikelet panicle^-1, seed yield, high density grain, fresh seed, germination percentage and vigorous seedling.

Keywords: Rice, Harvesting time, Quality Seed

Location: BRRI Farm Gazipur-1701

Start Date: 01-06-2008

End Date: 31-01-2009

Program Area: Seed Technology

Commodity: Rice

Objectives:

To investigate the effect of harvest time between heading stage and maturity stage at different maturity level for producing quality seed of rice.

Methodology:

The experiment was conducted at Bangladesh Rice Research Institute farm during Boro season of 2008-09 to investigate the effect of harvest time between heading stage and maturity stage at different maturity level for producing quality seed of rice. Regarding this, seed samples of all the plots were collected at 22, 24, 26, 28 and 30 Days after Flowering (DAF). The experiment was laid out in a Randomized Complete Block Design (RCBD) with three replications. Forty five days old seedlings of BRRI dhan29 was transplanted using 3 seedlings hill^-1 and 20 cm x 20 cm spacing. Urea, TSP, MP, Gypsum and Zinc Sulphate were applied @ 270, 130, 120, 70, 10 Kg ha^-1, respectively. All other operations were followed as BRRI recommendation. The number of panicle m^-2, no. of spikelet panicle^-1, 1000 grain weight, seed yield were calculated and different qualitative characters such as percentage of high density grain, percentage of fresh seed soaked in urea solution, germination percentage and seedling vigor index were studied. The collected data were analyzed using MSTAT software and means were adjusted through DMRT

Source of Information: BRRI ANNUAL REPORT 2008-2009. FARM MANAGEMENT DIVISION, Bangladesh Rice Research Institute (BRRI), Gazipur. Pages: 241-243.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

It may be concluded that mature seed i.e. harvested at 30 days after flowering could produce highest number of spikelet panicle^-1, seed yield, and high density grain, fresh seed soaked in urea solution, germination and vigorous seedling. However, further study is required to conclude this issue exactly.

Knowledge Management: Report/Proceedings