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

Impacts of Integrated Weed Management in Transplant Aman Rice

T. Ahmed
Scientific Officer
Bangladesh Tea Research Institute, Srimongal, Sylhet

A. K. M. M. B. Chowdhury
Assistant Professor
Dept.of Crop Botany, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur-5200

S. M. Sayem
Assistant Professor
Department of Soil Science, Hajee Mohammad Danesh Science and Technology University (HSTU), Dinajpur-5200

M. M. Karim
Professor
Dept. of Agronomy, Bangladesh Agricultural University, Mymensigh-2202, Bangladesh

Abstract/ Executive Summary:

Transplant Aman rice suffers from weed infestation which contributes to lower yield of this crop. A field experiment was carried out at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh from July to December 2002 to find out the best approach of weed management and an effective and economical weed control treatment through integrated approach on transplant Aman rice cv. BRRI dhan37. The experiment was laid out in a randomized complete block design with four replications. There were fifteen treatments namely, No weeding (W_o), (W₁), W₂), (W₃), (W₄), (W₅), (W₆), (W₇), (W₈), (W₉), (W₁₀), (W₁₁), (W₁₂), (W₁₃), and Weed free (W₁₄). Weed control treatments had significant effect on all the studied crop characters except 1000 grain weight. The highest grain and straw yields were produced in the weed free treatment which was followed by (W₆), (W₁₃) and (W₇). The lowest grain and straw yields were produced in the No weeding treatment which was followed by others. However the cost benefit analysis showed a bit different trend than that of grain and straw yields where the maximum profit was noticed in (W₁₀) which was followed by (W₇). M-chlor @ 13 kg ha^-1 + 1 weeding with Japanese rice weeder and Ronstar @ 2.0 1 ha^-1+ 1 hand weeding weed control treatments.

Keywords: Weed, Integrated management, Yield, Economic performance, Aman rice

Location: Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh

Start Date: 00-07-2002

End Date: 00-12-2002

Program Area: Pest Management

Commodity: Weed management

Objectives:

Objective of the study was to find out the best approach of weed management and an effective and economical weed control treatment through integrated approach on transplant Aman rice cv. BRRI dhan37.

Methodology:

The experiment was conducted with transplant Aman rice cv. BRRI dhan37 at the Agronomy Field Laboratory, Department of Agronomy, Bangladesh Agricultural University, Mymensingh during the period from July to December 2002. Geographically the field is located at 24⁰ 25' N latitude and 90⁰ 50' E longitude at an elevation of average 18 m above the sea level belonging to non- calcareous dark grey flood plain soil under the Sonatola series of old Brahmaputra flood plain (AEZ-9). There were fifteen treatments namely, No weeding (W_o), One hand weeding (W₁), Two hand weeding (W₂), Ronstar @ 2.0 l ha^-1(W₃). Argold @ 0.75 l ha^-1(W₄), M-chlor @ 13 kg ha^-1(W₅), Ronstar @ 2.0 l ha^-1+ 1 hand weeding (W₆), Argold @ 0.75 l ha^-1+ 1 hand weeding (W₇), M-chlor @ 13 kg ha^-1 + 1 hand weeding (W₈), Ronstar @ 2.0 l ha^-1 + 1 weeding with Japanese rice weeder (W₉), Argold @ 0 . 7 5 l ha^-1 + 1 weeding with Japanese rice weeder (W₁₀), M-chlor @ 13 kg ha^-1 + 1 weeding with Japanese rice weeder (W₁₁), 1 hand weeding + 1 weeding with Japanese rice weeder (W₁₂), 2 hand weeding + 1 weeding with Japanese rice weeder (W₁₃), and Weed free (W₁₄). The size of the individual plot was 4.0 m X 2.5 m and total number of plots was 60 having spacing between the unit plots and the replications were 0.75 m and 1.0 m, respectively. The field was fertilized with urea, TSP, MP, gypsum and zinc sulphate at the rate of 150, 100, 70, 60 and 10 kg ha^-1respectively. Thirty five days old seedlings were transplanted in the unit plots on 30 July 2002 at the rate of three seedlings per hill, maintaining row and hill spacing of 25 cm x 15 cm respectively. Weeding was done as per the experimental treatments. Other intercultural operations were done as and when necessary. Data on weed density were collected from each plot at flowering stage of the rice plants by using 0.5 m X 0.5 m quadrants as per method. After counting the weed density, the weeds were dried first in the sun then in an electrical oven for 72 hours at a temperature of 80^oC. The dry weight of each weed sample was taken an electrical balance and expressed in g m^-2. The crop was harvested plot-wise at full maturity on 14 December 2002. The harvested crop was threshed with pedal thresher and cleaned thoroughly and sun dried. Data on yield and yield characters were taken namely, Plant height, Total number of tillers hill^-1, Number of bearing tillers hill^-1, Number of non-bearing tillers hill^-1, Panicle length, Number of grains panicle^-1, Number of sterile spikelets panicle^-1, 1000-grain weight, Grain yield, Biological yield and Harvest index. The data were statistically analyzed with the help of computer package program MSTAT-C and the mean differences were adjudged by Duncan's Multiple Range Test. The cost of individual expenditure head was recorded and partial budget analysis was done. Relative profitability or loss of different methods of weed control was calculated in comparison with Two hand weeding which is the conventional method of weeding.

Source of Information: Int. J. Sustain. Crop Prod. 3(2):45-53, 2008

Article Link (Online Journal):

Funding Source:

1. Government

Budget:

Total Budget (Tk.) :

Achievement/Findings:

All the integrated weed control treatments mentioned above were more profitable than the Weed free or any other individual method of weed control treatment. Application of pre-emergence herbicide followed by one hand weeding or mechanical weeding was a good combination of integrated weed management approach.

Knowledge Management: Journal