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

Effect of Water Stress at Different Growth Stages on Yield and Yield Contributing Characters of Transplanted Aman Rice

M. T. Rahman
Former MS Student
Department of Crop Botany, BAU, Mymensingh

Dr. Md. Tariqul Islam
Principal Scientific Officer and Head
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

M. O. Islam
Professor
Department of Crop Botany, BAU, Mymensingh

Abstract/ Executive Summary:

A pot experiment with four transplanted aman rice varieties was carried out at the Bangladesh Institute of Nuclear Agriculture, Mymensingh during during aman season- 2000 to find out rice cultivar, which can be used as developing suitable variety for drought affected areas of Bangladesh. Moisture stress (30% FC) was maintained during booting, flowering and grain filling stage and 100% FC in the control plants. Plant height, tiller number, panicle number, panicle length, number of filled grains per panicle, 1000-grain weight, harvest index (HI), total dry matter (TDM) and yield were decreased with stress. However varies response was different for most of the characters and they had different degree of reduction. Among the varieties, Binadhan-4 produced highest yield, more tillers and panicles per plant, highest 1000-grain weight and medium TDM and HI. BRRI dhan33 showed medium yield and TDM but the highest 1000-grain weight and HI. Binashail showed the highest TDM and plant height. But it produced lower grain yield under stress condition. Binadhan-4 and Binashail may be used as developing suitable varieties for drought affected areas of Bangladesh.

Keywords: Transplanted aman rice, Water stress, Growth stages and Yield

Location: Bangladesh Institute of Nuclear Agriculture, Mymensingh

Start Date: 13-10-2000

End Date: 30-11-2000

Program Area: Risk Management in Agriculture

Commodity: Rice

Objectives:

The objective of the study was to find out rice cultivar, which can be used as developing suitable variety for drought affected areas of Bangladesh.

Methodology:

The experiment was conducted in plastic pots at Bangladesh Institute of Nuclear Agriculture, Mymensingh during August to November 2000. The soil was sandy loam in texture having pH 6.7. Urea 576 mg, TSP 560 mg, MP 320 mg and Gypsum 66 mg per pot (3.5 kg soils) following 90-84-60-5 kg of N-P₂O₅-K₂O-S ha' were applied respectively as fertilizers. Four transplanted aman rice varieties namely- Binadnan4, Binashail, BRRI dhan33 and Shorna were plant materials. Thirty days old seedlings were transplanted in each puddled pot on August 13, 2000. Four treatments viz., control, 30% FC at booting, flowering and grain filling were imposed. The experiment was laid out in Completely Randomized Design (CRD), where each treatment replicated 3 times. At the end of each growth stage, stress was discontinued and hills were allowed to grow under 100% FC till maturity. Intercultural operations such as weeding and application of pesticides were done as and when necessary. At maturity, plants under control and stress treatments were harvested and agronomic parameters were recorded. Then the plant parts were separated into roots, stem, leaves and panicles. After separating the grains from the panicles, all the plant parts were then oven dried at 80^oC for 72 hours. The grains were allowed to sun dry. After drying, the data on yield components and yield was recorded. Then the data on physiological parameters were determined. The collected data were analyzed statistically following two and three factors experiment in CRD with the help of MSTAT computer packages (Freed, 1992). The mean differences among the treatments and varieties were further assessed with Duncan's Multiple Range Test.

Source of Information: Pakistan Journal of Biological Sciences 5(2): 169-172, 2002

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

Plant height, tiller number, panicle number, panicle length, number of filled grains per panicle, 1000-grain weight, harvest index (HI), total dry matter (TDM) and yield were decreased with stress. However varies response was different for most of the characters and they had different degree of reduction. Among the varieties, Binadhan-4 produced highest yield, more tillers and panicles per plant, highest 1000-grain weight and medium TDM and HI. BRRI dhan33 showed medium yield and TDM but the highest 1000-grain weight and HI. Binashail showed the highest TDM and plant height. But it produced lower grain yield under stress condition. Binadhan-4 and Binashail may be used as developing suitable varieties for drought affected areas of Bangladesh.

Knowledge Management: Journal