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

Chemical Weed Control in Rice Safener 500 Ec (pretilachlor).

Dr. Gazi Jashim Uddin Ahmed
CSO and Head
Agronomy Division, BRRI, Gazipur

Abstract/ Executive Summary:

The study was conducted at BRRI, Gazipur with the objective to observe its (Safener 500 EC) weed control efficiency, impact on plant growth and yield of BR26. Bio efficacy data of Safener 500EC @ 1.0 Lit ha^-1 against weed suppression indicated that 80% control of Cyperus Difformis, 82% control of Scirpus maritimus, 80% control of Echinochloa crusgalli, and 83% control of Monochoria vaginalis and 86% control of Marsilea minuta were achieved. No significant effect on plant height due to different doses of herbicide but little bit higher plant height observed in weed free plot. Herbicide treatment significantly influenced on tiller production, panicle production, grain per panicle and grain. The highest tiller m²(290.00) was observed from in weed free plots which was statistically similar with other treated plot treated plot except un weeded plot. The lowest tiller m² (165.00) was observed from un weeded plots. In case of Panicle per m²similar trend of result was observed. Number of filled grain panicle-1 was statistically higher in weed free (88) treatment and the lowest grain panicle^-1 (53) was observed in un weeded plots. Considering grain yield, weed free plot gave the highest yield (4.29 t/ha) which statistically similar with other herbicide doses treated plot. The lowest grain panicle^-1 was observed from in un weeded plot (2.10 t/ha^-1).

Keywords: Safener 500 EC (Pretilachlor), Weed, Supperession, Rice, Herbicide.

Location: BRRI Farm, Gazipur.

Start Date: 01-07-2004

End Date: 30-06-2005

Program Area: Pest Management

Commodity: Herbicide

Objectives:

To observe its (Safener 500 EC) weed control efficiency, impact on plant growth and yield of BR26.

Methodology:

The study was conducted at BRRI, Gazipur in Aus season. The treatment were i) Safener 500 EC @ 0.5 L ha^-1 ii) Safener 500 EC @ 1.0 L ha^-1 iii) Safener 500 EC @ 1.5 L ha^-1 iv) Corostar 25 EC @ 2.0 L ha^-1 v) weed free and vi) control. Corostar @ 2.0 L ha^-1 was used to compare the new herbicide. The experiment was laid out in RCB design with 3 replications. Thirty days old seedlings of BR26 were transplanted on 27th April, 2005 at 20 x 20 cm spacing with 2 seedling hill^-1. Fertilizer was applied following BRRI recommended dose. Herbicides were sprayed at 3 days after transplanting. In weed free treatment, the plots were kept weed free up to 40 DAT. Weed control efficiency was calculated using weed dry matter weight data. Other operations were done as 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:

From the study it was indicated that Safener 500 EC @ 1.0 L ha^-1 controlled weed effectively and produced optimum grain yield in T. Aus season.

Knowledge Management: Report/Proceedings