Agricultural Research Management Information System

Home
Research Summary
Search
About Us
- ARMIS
- Brochure
Contact Us
Report
User Request
Data Input
Help
- Operation Manual
  - PDF
  - Video
- Program Area & Commodity
We have reached 37600 number of research entries at this moment.

- Logout

Research Detail

Home
Research
Detail

Seeding Rate for Direct-wet Seeded Rice.

Dr. MA Mannan Akhand
PSO
Agronomy Division, BRRI

Abstract/ Executive Summary:

Determination of seedling rate is important to reduce amount of seed. The study was conducted with the objective of determine the optimum seed rate of direct wet-seeded rice compared to transplanting method for economic grain yield during Boro season. The experiment was conducted in a RCB design with 3 replications. Pre germinated (>80% germination) seeds were evenly broadcasted in the main plot on January 19,2005. Results indicated that the higher number plant stands were observed in 90 kg seeds/ha and the lowest in 15 kg seeds/ha for direct-seeded rice.It may be concluded that transplanted with 30 days old seedling on 19 January obtained grain yield than the broadcast method.

Keywords: Seeding rate, Direct wet-seeded rice, Transplanting method, Economic grain yield, Boro season.

Location: BRRI Farm, Gazipur.

Start Date: 01-07-2004

End Date: 30-06-2005

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To determine the optimum seed rate of direct wet-seeded rice compared to transplanting method for economic grain yield during Boro season.

Methodology:

The study was conducted at BRRI farm Gazipur. Pre germinated (>80% germination) seeds were evenly broadcasted in the main plot on January 19,2005. Transplanting was made: i) thirty day old seedling was planted on the same day of DSR. ii) thirty day old seedling was planted on 20 February spaced at 20 cm x 20 cm with 2 seedling/hill. Seeds were used for DSR @ 15,30,50,75 & 90 kg/ha. The experiment was conducted in a RCB design with 3 replications. All intercultural management as per recommended were followed as and when necessary.

Source of Information: BRRI. Proceedings of the BRRI Annual Internal Review for 2004-2005. Bangladesh Rice Research Institute (BRRI). Gazipur -1701.

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

Results indicated that the higher number plant stands were observed in 90 kg seeds/ha and the lowest in 15 kg seeds/ha for direct-seeded rice. In DSR crop significantly number of plants was observed than TRP. Plant height did not show any differences between the methods irrespective of seeding rate. Although 90 kg seeds/ha of broadcast method produced maximum tiller number but there was no significant differences in tillers number from 15 to 90 kg/ha. The lowest tillers were found in transplanted crop. The same trend was followed for panicle number. On the other hand, significantly higher grains/panicle was obtained from transplanting method than in broadcast method. However, transplanted on 19 January crop gave significantly higher grain yield than broadcast method. Maximum grain yield was found in 45 kg seeds/ha of broadcast method and decreased grain yield with the increase of seeding rate. But the result indicated that there was no significant differences in grain yield between 45 kg seeds/ha of BC methods and transplant on 20 February planting. No significant variation in 1000 grain and sterility percentage found between the planting methods. It may be concluded that transplanted with 30 days old seedling on 19 January obtained grain yield than the broadcast method. But there was no significant different in grain yield between 45 kg seeds/ha of broadcast method and transplanted on 20 February planting.

Knowledge Management: Report/Proceedings