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

Effects of Irrigation Water and Soil Added Arsenic on Growth and Yield of Crops in Rice-rice Cropping Pattern

M. A. Khan
Department of Soil Science, Sher-e-Bangia Agricultural University, Dhaka 1207.

M. R. Islam
Department of Soil Science, Bangladesh Agricultural University, Mymensingh 2202.

G. M. Panaullah
CIMMYT Bangladesh, P.O. Box 6057, Dhaka 1212.

J. M. Duxburry
Cornell University, USA.

M. Jahiruddin
Department of Soil Science, Bangladesh Agricultural University, Mymensingh 2202

Abstract/ Executive Summary:

A field Experiment was conducted at Bangladesh Agricultural University Farm during January 2004 to December 2005 in order to examine the adverse effect of As in rice. Boro- T. Arnan- Boro-T. Aman rice crops were grown in sequence. There were five treatments consisting of 0, I, 2 ppm As added with irrigation water, 10 and 20 ppm As added to soil. Arsenic treatments were applied in Boro crops. The As contamination of soil either through irrigation water or directly to soil significantly affected the yield and yield components of Boro and T. Aman rice. Application of As added to the Boro rice had significant residual effects on the T. Aman rice. The irrigation water and soil added As depressed the plant height, number of tillers, filled grains panicle^-1, 1000 - grain weight, straw and grain yields of Boro and T. Aman rice. The grain yield reduction over the cropping seasons and treatments varied from 8.2 to 80% as compared to control treatment.

Keywords: Arsenic, Yield parameters, Yield, Rice

Location: Soil Science Field Laboratory of BAU Farm, Mymensingh

Start Date: 01-02-2004

End Date: 30-11-2005

Program Area: Farming System

Commodity: Water quality

Objectives:

To examine the adverse effect of As in rice.

Methodology:

The experiment was set up at the Soil Science Field Laboratory of Bangladesh Agricultural University (BAU) Farm, Mymensingh during the period from February, 2004 to November 2005. The experiment field is located at 24.75°N latitude and 90.50°E. The land is medium high and it belongs to the 'Old Brahmaputra Floodplain' agro ecological zone. The soil falls into the 'Sonatola Soil Series. The initial soil was collected from 0-15 cm depth. Texturally the soil was silt loam having pH 6.5, organic matter content 1.40%, available P 6.3 ppm, total Fe 29.87 g kg^-1, total Mn 0.484 g kg^-1 and total As 3.19 mg kg^-1. Two rice crops such as Boro and Transplant Aman were grown in a sequence of Boro- T. Aman- Boro- T, Aman during 2004 and 2005. The varieties used were BRRI dhan 29 and BRRI dhan 33, respectively. There were five treatments of T₀ (As- control), T₁ (1 ppm As with irrigation water), T₂ (2 ppm As with irrigation water), T₃ (10 ppm soil added As) and T₄ (20 ppm soil added As), each treatment was replicated four times. Arsenic treatments were applied in Boro season of 2004 and 2005. Twenty PVC cylinders (30 cm diameter and 30 cm length) were installed up to 20 cm depth in the middle of the 1 m x 1 m plot. Five treatments (Irrigation water containing 0, 1 & 2 µg As mL-¹ and 10& 20 µg As g-¹ soil) were applied to the soils of the cores in each Boro season. Soil applied arsenic was mixed uniformly with the soils up to 15 cm depth of the ring before transplanting the seedlings. The land was puddled in each crop transplantation. The total number of hills/ plot were 25 including 2 hills within the ring and 2 seedlings were used in each hill following a spacing of 20 cm x 20 cm. Seedling age was 40- 45 days. Arsenic was added through sodium arsenate. Irrigation water was collected after 15 minute of starting pump and the water was analyzed for As contents. Then stock solution of As was mixed to the collected irrigation water to get 1 and 2 ppm solution for application. The total amounts of 150 and 300 mg As were added in I and 2 ppm irrigation As treatments. Treatment wise irrigation water was applied and other management practices were done as required. In As-control and 2 soil applied As treatments, normal irrigation water (free from As) was applied. Fertilizer application (N, P, K & S) and intercultural operations were done as required to maintain normal crop growth. The rates of N, P, K and S for Boro rice were 120, 25, 60 and 20 kg ha-¹. The crop was harvested at maturity. The yield and yield components were recorded. After harvest, the yield and yield components were also recorded. ln the same way, Boro (3rd crop) and T. Aman (4^th crop) crops were grown during 2005 and yield and yield components were recorded. AI the plant data were statistically analyzed following F-test and the difference between treatments means were adjudged by Duncan's Multiple Range Test (DMRT).

Source of Information: JOURNAL OF SHER-E-BANGLA AGRICULTURAL UNIVERSITY, Vol. 01 (1), July 2007, pp. 01-07.

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In Boro rice of 2005, the straw yield recorded with 1 ppm irrigation As (T₁) was comparable to those recorded with 2 ppm irrigation As (T₂) and 10 ppm soil added As (T₃) treatments. In T. Aman rice of 2005, the highest straw yield (47.90 g core^-1) was comparable to that observed in 1 ppm irrigation As treatment (T₁). Considerable reduction in straw biomass in the higher As treatment recorded in this experiment primarily as a result of lower number of tillers core^-1 and stunted rice plant. Exposure to arsenic, causing a reduction in shoot biomass and/ or growth for rice. That application of as added to the first crop (Boro rice) had significant residual effects on the second crop (T. Aman rice).

Knowledge Management: Journal